diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 01788442da6..7cda50ceec5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,14 +11,14 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-12]
 
     steps:
     - uses: actions/checkout@v3
     - name: dependancy - linux
       if: ${{ matrix.os == 'ubuntu-latest' }}
       run: |
-        sudo apt-get update
+        sudo apt-get update --allow-unauthenticated --allow-insecure-repositories
         sudo apt-get install -y build-essential git lcov bison flex \
               libkrb5-dev libssl-dev libldap-dev libpam-dev python3-dev \
               tcl-dev libperl-dev gettext libxml2-dev libxslt-dev \
@@ -35,7 +35,7 @@ jobs:
             --with-ossp-uuid  --with-libxml --with-libxslt  --with-perl \
             --with-icu
     - name: configure - macos
-      if: ${{ matrix.os == 'macos-latest' }}
+      if: ${{ matrix.os == 'macos-12' }}
       run: |
         export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
         ./configure \
diff --git a/.github/workflows/contrib_regression.yml b/.github/workflows/contrib_regression.yml
index 2fde426e707..5d60cdaee82 100644
--- a/.github/workflows/contrib_regression.yml
+++ b/.github/workflows/contrib_regression.yml
@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v3
     - name: dependancy
       run: |
-        sudo apt-get update
+        sudo apt-get update --allow-unauthenticated --allow-insecure-repositories
         sudo apt-get install -y build-essential git lcov bison flex \
               libkrb5-dev libssl-dev libldap-dev libpam-dev python3-dev \
               tcl-dev libperl-dev gettext libxml2-dev libxslt-dev \
diff --git a/.github/workflows/meson_build.yml b/.github/workflows/meson_build.yml
index d781680c55c..54635e71b85 100644
--- a/.github/workflows/meson_build.yml
+++ b/.github/workflows/meson_build.yml
@@ -17,7 +17,7 @@ jobs:
     - uses: actions/checkout@v3
     - name: dependancy - linux
       run: |
-        sudo apt-get update
+        sudo apt-get update --allow-unauthenticated --allow-insecure-repositories
         sudo apt-get install -y build-essential git lcov bison flex \
               libkrb5-dev libssl-dev libldap-dev libpam-dev python3-dev \
               tcl-dev libperl-dev gettext libxml2-dev libxslt-dev \
diff --git a/.github/workflows/oracle_pg_regression.yml b/.github/workflows/oracle_pg_regression.yml
index 008dd645a4d..6fec885112b 100644
--- a/.github/workflows/oracle_pg_regression.yml
+++ b/.github/workflows/oracle_pg_regression.yml
@@ -11,14 +11,14 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-12]
 
     steps:
     - uses: actions/checkout@v3
     - name: dependancy
       if: ${{ matrix.os == 'ubuntu-latest' }}
       run: |
-        sudo apt-get update
+        sudo apt-get update --allow-unauthenticated --allow-insecure-repositories
         sudo apt-get install -y build-essential git lcov bison flex \
               libkrb5-dev libssl-dev libldap-dev libpam-dev python3-dev \
               tcl-dev libperl-dev gettext libxml2-dev libxslt-dev \
@@ -39,7 +39,7 @@ jobs:
             --with-ossp-uuid  --with-libxml --with-libxslt  --with-perl \
             --with-icu
     - name: configure - macos
-      if: ${{ matrix.os == 'macos-latest' }}
+      if: ${{ matrix.os == 'macos-12' }}
       run: |
         export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
         curl -L -o cpanm http://cpanmin.us && chmod +x cpanm && \
diff --git a/.github/workflows/oracle_regression.yml b/.github/workflows/oracle_regression.yml
index d8813fd9084..d5093ab0b67 100644
--- a/.github/workflows/oracle_regression.yml
+++ b/.github/workflows/oracle_regression.yml
@@ -11,14 +11,14 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-12]
 
     steps:
     - uses: actions/checkout@v3
     - name: dependancy
       if: ${{ matrix.os == 'ubuntu-latest' }}
       run: |
-        sudo apt-get update
+        sudo apt-get update --allow-unauthenticated --allow-insecure-repositories
         sudo apt-get install -y build-essential git lcov bison flex \
               libkrb5-dev libssl-dev libldap-dev libpam-dev python3-dev \
               tcl-dev libperl-dev gettext libxml2-dev libxslt-dev \
@@ -39,7 +39,7 @@ jobs:
             --with-ossp-uuid  --with-libxml --with-libxslt  --with-perl \
             --with-icu
     - name: configure - macos
-      if: ${{ matrix.os == 'macos-latest' }}
+      if: ${{ matrix.os == 'macos-12' }}
       run: |
         export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
         curl -L -o cpanm http://cpanmin.us && chmod +x cpanm && \
diff --git a/.github/workflows/pg_regression.yml b/.github/workflows/pg_regression.yml
index 32040513882..08a49eb4bad 100644
--- a/.github/workflows/pg_regression.yml
+++ b/.github/workflows/pg_regression.yml
@@ -11,14 +11,14 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-12]
 
     steps:
     - uses: actions/checkout@v3
     - name: dependancy
       if: ${{ matrix.os == 'ubuntu-latest' }}
       run: |
-        sudo apt-get update
+        sudo apt-get update --allow-unauthenticated --allow-insecure-repositories
         sudo apt-get install -y build-essential git lcov bison flex \
               libkrb5-dev libssl-dev libldap-dev libpam-dev python3-dev \
               tcl-dev libperl-dev gettext libxml2-dev libxslt-dev \
@@ -39,7 +39,7 @@ jobs:
             --with-ossp-uuid  --with-libxml --with-libxslt  --with-perl \
             --with-icu
     - name: configure - macos
-      if: ${{ matrix.os == 'macos-latest' }}
+      if: ${{ matrix.os == 'macos-12' }}
       run: |
         export PKG_CONFIG_PATH="/usr/local/opt/icu4c/lib/pkgconfig"
         curl -L -o cpanm http://cpanmin.us && chmod +x cpanm && \
diff --git a/contrib/ivorysql_ora/Makefile b/contrib/ivorysql_ora/Makefile
index 0a8a22e0ecd..a452c079fd8 100644
--- a/contrib/ivorysql_ora/Makefile
+++ b/contrib/ivorysql_ora/Makefile
@@ -63,7 +63,8 @@ ORA_REGRESS = \
 	datatype_and_func_bugs \
 	ora_sysview \
 	ora_like_operator \
-	ora_xml_functions
+	ora_xml_functions \
+	ora_datetime_ignore_nls_mask
 
 SHLIB_LINK += -lxml2
 
diff --git a/contrib/ivorysql_ora/expected/ora_datetime.out b/contrib/ivorysql_ora/expected/ora_datetime.out
index a21a9ad638d..250a6e76fa5 100644
--- a/contrib/ivorysql_ora/expected/ora_datetime.out
+++ b/contrib/ivorysql_ora/expected/ora_datetime.out
@@ -1236,3 +1236,20 @@ select 25::number <= to_char('1990-01-01'::oradate, 'yyyy');
  t
 (1 row)
 
+/* Begin - BUG#M0000247 */
+set client_min_messages = 'error';
+create table test_247(a date, b timestamp(7), c timestamp(7) with time zone, d timestamp(7) with local time zone);
+set ivorysql.datetime_ignore_nls_mask = 15;
+insert into test_247 values('2023-10-27 10:54:55.1234567', '2023-10-27 10:54:55.1234567', '2023-10-27 10:54:55.1234567', '2023-10-27 10:54:55.1234567');
+SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';
+select * from test_247;
+          a          |               b               |               c               |               d               
+---------------------+-------------------------------+-------------------------------+-------------------------------
+ 2023-10-27 10:54:55 | 2023-10-27 10:54:55.123457000 | 2023-10-27 10:54:55.123457000 | 2023-10-27 10:54:55.123457000
+(1 row)
+
+drop table test_247;
+reset NLS_DATE_FORMAT;
+reset ivorysql.datetime_ignore_nls_mask;
+reset client_min_messages;
+/* End - BUG#M0000247 */
diff --git a/contrib/ivorysql_ora/expected/ora_datetime_ignore_nls_mask.out b/contrib/ivorysql_ora/expected/ora_datetime_ignore_nls_mask.out
new file mode 100644
index 00000000000..246ad943bd6
--- /dev/null
+++ b/contrib/ivorysql_ora/expected/ora_datetime_ignore_nls_mask.out
@@ -0,0 +1,344 @@
+--
+-- datetime_ignore_nls_mask
+--
+-- build table and test 'datetime_ignore_nls_mask' parameter with value 0, do not ignore any types.
+CREATE TABLE TEST_DATETIME_IGNORE_NLS_MASK(a date, b timestamp, c timestamptz, d timestamp with local time zone);
+SET TIMEZONE TO 'Asia/Shanghai';
+SET ivorysql.datetime_ignore_nls_mask TO 0;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |             b              |                 c                 |             d              
+------------+----------------------------+-----------------------------------+----------------------------
+ 2024-04-23 | 2024-04-23 15:16:11.000000 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15:16:11.000000
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 1, ignore date.
+SET TIMEZONE TO 'Asia/Shanghai';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+SET ivorysql.datetime_ignore_nls_mask TO 1;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |             b              |                 c                 |             d              
+------------+----------------------------+-----------------------------------+----------------------------
+ 2024-04-23 | 2024-04-23 15:16:11.000000 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15:16:11.000000
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 2, ignore timestamp.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 2;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |                 c                 |       d       
+------------+---------------+-----------------------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 3, ignore date and timestamp.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24:MI';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15:16');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15:16');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 3;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15:16');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |        b         |                 c                 |        d         
+------------+------------------+-----------------------------------+------------------
+ 2024-04-23 | 2024-04-23 15:16 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15:16
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 4, ignore timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ..._MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 4;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |             b              |          c          |             d              
+------------+----------------------------+---------------------+----------------------------
+ 2024-04-23 | 2024-04-23 15:16:11.000000 | 2024-04-23 14:16:11 | 2024-04-23 15:16:11.000000
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 5, ignore date and timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ..._MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 5;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |             b              |          c          |             d              
+------------+----------------------------+---------------------+----------------------------
+ 2024-04-23 | 2024-04-23 15:16:11.000000 | 2024-04-23 14:16:11 | 2024-04-23 15:16:11.000000
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 6, ignore timestamp and timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...RE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 6;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |          c          |       d       
+------------+---------------+---------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 7, ignore date, timestamp and timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...RE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 7;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |          c          |       d       
+------------+---------------+---------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 8, ignore timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 8;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |                 c                 |       d       
+------------+---------------+-----------------------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 9, ignore date and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 9;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |                 c                 |       d       
+------------+---------------+-----------------------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 10, ignore timestamp and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 10;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |                 c                 |       d       
+------------+---------------+-----------------------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 11, ignore date, timestamp and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 11;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |                 c                 |       d       
+------------+---------------+-----------------------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11.000000 +08:00 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 12, ignore timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...RE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...4-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 12;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |          c          |       d       
+------------+---------------+---------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 13, ignore date, timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...RE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...4-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 13;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |          c          |       d       
+------------+---------------+---------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 14, ignore  timestamp, timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...RE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...4-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 14;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |          c          |       d       
+------------+---------------+---------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 15, date, timestamp, timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23...
+                                                         ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...EST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...RE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-2...
+                                                             ^
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+ERROR:  datetime format picture ends before converting entire input string
+LINE 1: ...4-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-2...
+                                                             ^
+SET ivorysql.datetime_ignore_nls_mask TO 15;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+     a      |       b       |          c          |       d       
+------------+---------------+---------------------+---------------
+ 2024-04-23 | 2024-04-23 15 | 2024-04-23 14:16:11 | 2024-04-23 15
+(1 row)
+
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
diff --git a/contrib/ivorysql_ora/sql/ora_datetime.sql b/contrib/ivorysql_ora/sql/ora_datetime.sql
index 138ef43cb09..e7c1567b946 100644
--- a/contrib/ivorysql_ora/sql/ora_datetime.sql
+++ b/contrib/ivorysql_ora/sql/ora_datetime.sql
@@ -597,3 +597,17 @@ SELECT 123.456 * interval'365 11:11:11' day(3) to second;
 -- The operator "<=" supports a comparison between the "number" type and the "varchar2" type.
 SET NLS_DATE_FORMAT = 'YYYY-MM-DD';
 select 25::number <= to_char('1990-01-01'::oradate, 'yyyy');
+
+/* Begin - BUG#M0000247 */
+set client_min_messages = 'error';
+create table test_247(a date, b timestamp(7), c timestamp(7) with time zone, d timestamp(7) with local time zone);
+set ivorysql.datetime_ignore_nls_mask = 15;
+insert into test_247 values('2023-10-27 10:54:55.1234567', '2023-10-27 10:54:55.1234567', '2023-10-27 10:54:55.1234567', '2023-10-27 10:54:55.1234567');
+SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';
+select * from test_247;
+
+drop table test_247;
+reset NLS_DATE_FORMAT;
+reset ivorysql.datetime_ignore_nls_mask;
+reset client_min_messages;
+/* End - BUG#M0000247 */
\ No newline at end of file
diff --git a/contrib/ivorysql_ora/sql/ora_datetime_ignore_nls_mask.sql b/contrib/ivorysql_ora/sql/ora_datetime_ignore_nls_mask.sql
new file mode 100644
index 00000000000..9e599cd569f
--- /dev/null
+++ b/contrib/ivorysql_ora/sql/ora_datetime_ignore_nls_mask.sql
@@ -0,0 +1,198 @@
+--
+-- datetime_ignore_nls_mask
+--
+
+-- build table and test 'datetime_ignore_nls_mask' parameter with value 0, do not ignore any types.
+CREATE TABLE TEST_DATETIME_IGNORE_NLS_MASK(a date, b timestamp, c timestamptz, d timestamp with local time zone);
+SET TIMEZONE TO 'Asia/Shanghai';
+SET ivorysql.datetime_ignore_nls_mask TO 0;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 1, ignore date.
+SET TIMEZONE TO 'Asia/Shanghai';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 1;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 2, ignore timestamp.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15');
+
+SET ivorysql.datetime_ignore_nls_mask TO 2;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 3, ignore date and timestamp.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24:MI';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15:16');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15:16');
+
+SET ivorysql.datetime_ignore_nls_mask TO 3;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11 +08:00', '2024-04-23 15:16:11 +09', '2024-04-23 15:16');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 4, ignore timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 4;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 5, ignore date and timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 5;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 6, ignore timestamp and timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+
+SET ivorysql.datetime_ignore_nls_mask TO 6;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 7, ignore date, timestamp and timestamptz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+
+SET ivorysql.datetime_ignore_nls_mask TO 7;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 8, ignore timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 8;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 9, ignore date and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 9;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 10, ignore timestamp and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 10;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 11, ignore date, timestamp and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 11;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 12, ignore timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 12;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 13, ignore date, timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 13;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 14, ignore  timestamp, timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 14;
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
+-- test 'datetime_ignore_nls_mask' parameter with value 15, date, timestamp, timestamptz and timestampltz.
+SET TIMEZONE TO 'Asia/Shanghai';
+SET nls_timestamp_format = 'YYYY-MM-DD HH24';
+SET nls_timestamp_tz_format = 'YYYY-MM-DD HH24:MI:SS';
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23', '2024-04-23 15', '2024-04-23 15:16:11', '2024-04-23 15:16:11');
+
+SET ivorysql.datetime_ignore_nls_mask TO 15;
+
+INSERT INTO TEST_DATETIME_IGNORE_NLS_MASK VALUES('2024-04-23 15:16:11', '2024-04-23 15:16:11', '2024-04-23 15:16:11 +09:00', '2024-04-23 15:16:11');
+SELECT * FROM TEST_DATETIME_IGNORE_NLS_MASK;
+DELETE FROM TEST_DATETIME_IGNORE_NLS_MASK;
+RESET ALL;
\ No newline at end of file
diff --git a/contrib/ivorysql_ora/src/datatype/oradate.c b/contrib/ivorysql_ora/src/datatype/oradate.c
index 0b5315e6a7d..4bddf9d6626 100644
--- a/contrib/ivorysql_ora/src/datatype/oradate.c
+++ b/contrib/ivorysql_ora/src/datatype/oradate.c
@@ -38,6 +38,7 @@
 #include "utils/timestamp.h"
 #include "utils/date.h"
 
+#include "../include/common_datatypes.h" /* BUG#M0000247 */
 
 PG_FUNCTION_INFO_V1(oradate_in);
 PG_FUNCTION_INFO_V1(oradate_out);
@@ -143,6 +144,68 @@ timestamp2timestamptz(Timestamp timestamp)
 	return result;
 }
 
+/* Begin - BUG#M0000247 */
+/*
+ * Same as timestamp_in(), In oracle mode, oradate type input is
+ * not affected by the nls parameter, and you can also choose to
+ * execute pg's input parsing logic.
+ */
+Timestamp
+pg_oradate_in(char *str, int32 typmod)
+{
+	Timestamp	result;
+	fsec_t		fsec;
+	struct pg_tm tt,
+			   *tm = &tt;
+	int			tz;
+	int			dtype;
+	int			nf;
+	int			dterr;
+	char	   *field[MAXDATEFIELDS];
+	int			ftype[MAXDATEFIELDS];
+	char		workbuf[MAXDATELEN + MAXDATEFIELDS];
+	DateTimeErrorExtra extra;
+
+	dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
+						  field, ftype, MAXDATEFIELDS, &nf);
+	if (dterr == 0)
+		dterr = DecodeDateTime(field, ftype, nf, &dtype, tm, &fsec, &tz, &extra);
+	if (dterr != 0)
+		DateTimeParseError(dterr, &extra, str, "date", NULL);
+
+	switch (dtype)
+	{
+		case DTK_DATE:
+			if (tm2timestamp(tm, fsec, NULL, &result) != 0)
+				ereport(ERROR,
+						(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+						 errmsg("date out of range: \"%s\"", str)));
+			break;
+
+		case DTK_EPOCH:
+			result = SetEpochTimestamp();
+			break;
+
+		case DTK_LATE:
+			TIMESTAMP_NOEND(result);
+			break;
+
+		case DTK_EARLY:
+			TIMESTAMP_NOBEGIN(result);
+			break;
+
+		default:
+			elog(ERROR, "unexpected dtype %d while parsing date \"%s\"",
+				 dtype, str);
+			TIMESTAMP_NOEND(result);
+	}
+
+	OraAdjustTimestampForTypmod(&result, typmod);
+
+	return result;
+}
+/* End - BUG#M0000247 */
+
 /*****************************************************************************
  *	 USER I/O ROUTINES														 *
  *****************************************************************************/
@@ -161,8 +224,10 @@ oradate_in(PG_FUNCTION_ARGS)
 
 	if (strcmp(nls_date_format, "pg") == 0 || DATETIME_IGNORE_NLS(datetime_ignore_nls_mask, ORADATE_MASK))
 	{
-		return DirectFunctionCall1(date_timestamp,
-									DirectFunctionCall1(date_in, CStringGetDatum(str)));
+		/* Begin - BUG#M0000247 */
+		result = pg_oradate_in(str, 0);
+		PG_RETURN_TIMESTAMP(result);
+		/* End - BUG#M0000247 */
 	}
 	else
 	{
diff --git a/contrib/ivorysql_ora/src/datatype/oratimestamp.c b/contrib/ivorysql_ora/src/datatype/oratimestamp.c
index 4fbbd60dd54..291631b9e5d 100644
--- a/contrib/ivorysql_ora/src/datatype/oratimestamp.c
+++ b/contrib/ivorysql_ora/src/datatype/oratimestamp.c
@@ -173,6 +173,68 @@ OraAdjustTimestampForTypmod(Timestamp *time, int32 typmod)
 	}
 }
 
+/* Begin - BUG#M0000247 */
+/*
+ * Same as timestamp_in(), In oracle mode, oratimestamp input is
+ * not affected by the nls parameter, and you can also choose to
+ * execute pg's input parsing logic.
+ */
+Timestamp
+pg_oratimestamp_in(char *str, int32 typmod)
+{
+	Timestamp	result;
+	fsec_t		fsec;
+	struct pg_tm tt,
+			   *tm = &tt;
+	int			tz;
+	int			dtype;
+	int			nf;
+	int			dterr;
+	char	   *field[MAXDATEFIELDS];
+	int			ftype[MAXDATEFIELDS];
+	char		workbuf[MAXDATELEN + MAXDATEFIELDS];
+	DateTimeErrorExtra extra;
+
+	dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
+						  field, ftype, MAXDATEFIELDS, &nf);
+	if (dterr == 0)
+		dterr = DecodeDateTime(field, ftype, nf, &dtype, tm, &fsec, &tz, &extra);
+	if (dterr != 0)
+		DateTimeParseError(dterr, &extra, str, "timestamp", NULL);
+
+	switch (dtype)
+	{
+		case DTK_DATE:
+			if (tm2timestamp(tm, fsec, NULL, &result) != 0)
+				ereport(ERROR,
+						(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+						 errmsg("timestamp out of range: \"%s\"", str)));
+			break;
+
+		case DTK_EPOCH:
+			result = SetEpochTimestamp();
+			break;
+
+		case DTK_LATE:
+			TIMESTAMP_NOEND(result);
+			break;
+
+		case DTK_EARLY:
+			TIMESTAMP_NOBEGIN(result);
+			break;
+
+		default:
+			elog(ERROR, "unexpected dtype %d while parsing timestamp \"%s\"",
+				 dtype, str);
+			TIMESTAMP_NOEND(result);
+	}
+
+	OraAdjustTimestampForTypmod(&result, typmod);
+
+	return result;
+}
+/* End - BUG#M0000247 */
+
 /* common code for timestamptypmodin and timestamptztypmodin */
 static int32
 anytimestamp_typmodin(bool istz, ArrayType *ta)
@@ -282,10 +344,10 @@ oratimestamp_in(PG_FUNCTION_ARGS)
 
 	if (strcmp(nls_timestamp_format, "pg") == 0 || DATETIME_IGNORE_NLS(datetime_ignore_nls_mask, ORATIMESTAMP_MASK))
 	{
-		return DirectFunctionCall3(timestamp_in,
-									CStringGetDatum(str),
-									ObjectIdGetDatum(InvalidOid),
-									Int32GetDatum(typmod));
+		/* Begin - BUG#M0000247 */
+		result = pg_oratimestamp_in(str, typmod);
+		PG_RETURN_TIMESTAMP(result);
+		/* End - BUG#M0000247 */
 	}
 	else
 	{
diff --git a/contrib/ivorysql_ora/src/datatype/oratimestampltz.c b/contrib/ivorysql_ora/src/datatype/oratimestampltz.c
index 821430ec0ed..dbdb81e7e37 100644
--- a/contrib/ivorysql_ora/src/datatype/oratimestampltz.c
+++ b/contrib/ivorysql_ora/src/datatype/oratimestampltz.c
@@ -195,9 +195,12 @@ oratimestampltz_in(PG_FUNCTION_ARGS)
 
 	if (strcmp(nls_timestamp_format, "pg") == 0 || DATETIME_IGNORE_NLS(datetime_ignore_nls_mask, ORATIMESTAMPLTZ_MASK))
 	{
-		Datum	datum;
-		datum = DirectFunctionCall3(timestamp_in, CStringGetDatum(str), ObjectIdGetDatum(InvalidOid), Int32GetDatum(typmod));
-		PG_RETURN_TIMESTAMPTZ(timestamp2timestamptz(DatumGetTimestamp(datum)));
+		/* Begin - BUG#M0000247 */
+		Timestamp res;
+
+		res = pg_oratimestamp_in(str, typmod);
+		PG_RETURN_TIMESTAMPTZ(timestamp2timestamptz(res));
+		/* End - BUG#M0000247 */
 	}
 	else
 	{
diff --git a/contrib/ivorysql_ora/src/datatype/oratimestamptz.c b/contrib/ivorysql_ora/src/datatype/oratimestamptz.c
index 45c8d852b97..8d5c30450cf 100644
--- a/contrib/ivorysql_ora/src/datatype/oratimestamptz.c
+++ b/contrib/ivorysql_ora/src/datatype/oratimestamptz.c
@@ -170,6 +170,68 @@ timestamp2timestamptz(Timestamp timestamp)
 	return result;
 }
 
+/* Begin - BUG#M0000247 */
+/*
+ * Same as timestamptz_in(), In oracle mode, oratimestamptz input is
+ * not affected by the nls parameter, and you can also choose to
+ * execute pg's input parsing logic.
+ */
+TimestampTz
+pg_oratimestamptz_in(char *str, int32 typmod)
+{
+	TimestampTz result;
+	fsec_t		fsec;
+	struct pg_tm tt,
+			   *tm = &tt;
+	int			tz;
+	int			dtype;
+	int			nf;
+	int			dterr;
+	char	   *field[MAXDATEFIELDS];
+	int			ftype[MAXDATEFIELDS];
+	char		workbuf[MAXDATELEN + MAXDATEFIELDS];
+	DateTimeErrorExtra extra;
+
+	dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
+						  field, ftype, MAXDATEFIELDS, &nf);
+	if (dterr == 0)
+		dterr = DecodeDateTime(field, ftype, nf, &dtype, tm, &fsec, &tz, &extra);
+	if (dterr != 0)
+		DateTimeParseError(dterr, &extra, str, "timestamp with time zone", NULL);
+
+	switch (dtype)
+	{
+		case DTK_DATE:
+			if (tm2timestamp(tm, fsec, &tz, &result) != 0)
+				ereport(ERROR,
+						(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+						 errmsg("timestamp out of range: \"%s\"", str)));
+			break;
+
+		case DTK_EPOCH:
+			result = SetEpochTimestamp();
+			break;
+
+		case DTK_LATE:
+			TIMESTAMP_NOEND(result);
+			break;
+
+		case DTK_EARLY:
+			TIMESTAMP_NOBEGIN(result);
+			break;
+
+		default:
+			elog(ERROR, "unexpected dtype %d while parsing timestamptz \"%s\"",
+				 dtype, str);
+			TIMESTAMP_NOEND(result);
+	}
+
+	OraAdjustTimestampForTypmod(&result, typmod);
+
+	return result;
+}
+/* Begin - BUG#M0000247 */
+
 /*****************************************************************************
  *	 USER I/O ROUTINES														 *
  *****************************************************************************/
@@ -190,10 +252,12 @@ oratimestamptz_in(PG_FUNCTION_ARGS)
 
 	if (strcmp(nls_timestamp_tz_format, "pg") == 0 || DATETIME_IGNORE_NLS(datetime_ignore_nls_mask, ORATIMESTAMPTZ_MASK))
 	{
-		return DirectFunctionCall3(timestamptz_in,
-									CStringGetDatum(str),
-									ObjectIdGetDatum(InvalidOid),
-									Int32GetDatum(typmod));
+		/* Begin - BUG#M0000247 */
+		TimestampTz	result;
+
+		result = pg_oratimestamptz_in(str, typmod);
+		PG_RETURN_TIMESTAMPTZ(result);
+		/* End - BUG#M0000247 */
 	}
 	else
 	{
diff --git a/contrib/ivorysql_ora/src/include/common_datatypes.h b/contrib/ivorysql_ora/src/include/common_datatypes.h
index 72cf0f07f1b..77419a3c46e 100644
--- a/contrib/ivorysql_ora/src/include/common_datatypes.h
+++ b/contrib/ivorysql_ora/src/include/common_datatypes.h
@@ -54,6 +54,13 @@ extern PGDLLEXPORT Datum oratimestamptz_cmp(PG_FUNCTION_ARGS);
 
 /* oratimestampltz.c */
 extern PGDLLEXPORT Datum oratimestampltz_cmp(PG_FUNCTION_ARGS);
+extern Timestamp pg_oratimestamp_in(char *str, int32 typmod); /* BUG#M0000247 */
+
+/* oradate.c */
+extern Timestamp pg_oradate_in(char *str, int32 typmod); /* BUG#M0000247 */
+
+/* oratimestamptz.c */
+extern TimestampTz pg_oratimestamptz_in(char *str, int32 typmod); /* BUG#M0000247 */
 
 /* dsinterval.c */
 extern Datum dsinterval_out(PG_FUNCTION_ARGS);