diff --git a/configure b/configure
index 925f63d4dcf..efbbdcae29d 100755
--- a/configure
+++ b/configure
@@ -742,6 +742,9 @@ with_krb_srvnam
 krb_srvtab
 with_gssapi
 with_pythonsrc_ext
+PIP3
+CURL
+PYTHON3
 with_python
 with_perl
 with_tcl
@@ -9892,6 +9895,142 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $with_pythonsrc_ext" >&5
 $as_echo "$with_pythonsrc_ext" >&6; }
 
+# Check for required dependencies when pythonsrc-ext is enabled
+if test "$with_pythonsrc_ext" = yes; then
+  # Extract the first word of "python3", so it can be a program name with args.
+set dummy python3; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PYTHON3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PYTHON3 in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PYTHON3="$PYTHON3" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_PYTHON3="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+PYTHON3=$ac_cv_path_PYTHON3
+if test -n "$PYTHON3"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PYTHON3" >&5
+$as_echo "$PYTHON3" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  if test -z "$PYTHON3"; then
+    as_fn_error $? "python3 is required for --with-pythonsrc-ext but was not found" "$LINENO" 5
+  fi
+
+  # Extract the first word of "curl", so it can be a program name with args.
+set dummy curl; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_CURL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $CURL in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_CURL="$CURL" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_CURL="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+CURL=$ac_cv_path_CURL
+if test -n "$CURL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CURL" >&5
+$as_echo "$CURL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  if test -z "$CURL"; then
+    as_fn_error $? "curl is required for --with-pythonsrc-ext but was not found" "$LINENO" 5
+  fi
+
+  # Extract the first word of "pip3", so it can be a program name with args.
+set dummy pip3; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PIP3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PIP3 in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PIP3="$PIP3" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_PIP3="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+PIP3=$ac_cv_path_PIP3
+if test -n "$PIP3"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PIP3" >&5
+$as_echo "$PIP3" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  if test -z "$PIP3"; then
+    as_fn_error $? "pip3 is required for --with-pythonsrc-ext but was not found" "$LINENO" 5
+  fi
+fi
+
+
 
 
 #
@@ -18417,7 +18556,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -18463,7 +18602,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -18487,7 +18626,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -18532,7 +18671,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -18556,7 +18695,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
diff --git a/configure.ac b/configure.ac
index 6ef2f9fa26c..7f2403e93ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1077,6 +1077,25 @@ AC_SUBST(with_python)
 AC_MSG_CHECKING([whether to build Python modules for gpMgmt])
 PGAC_ARG_BOOL(with, pythonsrc-ext, no, [build Python modules for gpMgmt])
 AC_MSG_RESULT([$with_pythonsrc_ext])
+
+# Check for required dependencies when pythonsrc-ext is enabled
+if test "$with_pythonsrc_ext" = yes; then
+  AC_PATH_PROG([PYTHON3], [python3])
+  if test -z "$PYTHON3"; then
+    AC_MSG_ERROR([python3 is required for --with-pythonsrc-ext but was not found])
+  fi
+
+  AC_PATH_PROG([CURL], [curl])
+  if test -z "$CURL"; then
+    AC_MSG_ERROR([curl is required for --with-pythonsrc-ext but was not found])
+  fi
+
+  AC_PATH_PROG([PIP3], [pip3])
+  if test -z "$PIP3"; then
+    AC_MSG_ERROR([pip3 is required for --with-pythonsrc-ext but was not found])
+  fi
+fi
+
 AC_SUBST(with_pythonsrc_ext)
 
 
diff --git a/gpMgmt/bin/Makefile b/gpMgmt/bin/Makefile
index c863cb7bf19..3c4b6d2b031 100644
--- a/gpMgmt/bin/Makefile
+++ b/gpMgmt/bin/Makefile
@@ -90,14 +90,14 @@ PYYAML_VERSION=5.4.1
 download-python-deps:
 	@echo "--- Downloading Python dependencies for gpMgmt modules"
 	@mkdir -p $(PYLIB_SRC_EXT)
-	# Download psutil
-	pip3 download --no-deps --no-binary :all: --no-build-isolation psutil==$(PSUTIL_VERSION) --dest $(PYLIB_SRC_EXT)/
-	# Download PyYAML, wheel is for metadata vefiry;
-	# cython is used for building, see https://github.com/apache/cloudberry/issues/1201
-	pip3 install wheel "cython<3.0.0"
-	pip3 download --no-deps --no-binary :all: --no-build-isolation PyYAML==$(PYYAML_VERSION) --dest $(PYLIB_SRC_EXT)/
-	# Download PyGreSQL, the `PATH` is needed to avoid cannot find the pg_config
-	PATH=$(DESTDIR)$(bindir):$$PATH pip3 download --no-deps --no-binary :all: --no-build-isolation PyGreSQL==$(PYGRESQL_VERSION) --dest $(PYLIB_SRC_EXT)/
+	# Download psutil using curl
+	curl -sSL https://files.pythonhosted.org/packages/source/p/psutil/psutil-$(PSUTIL_VERSION).tar.gz -o $(PYLIB_SRC_EXT)/psutil-$(PSUTIL_VERSION).tar.gz
+	# Download PyYAML using curl
+	curl -sSL https://files.pythonhosted.org/packages/source/P/PyYAML/PyYAML-$(PYYAML_VERSION).tar.gz -o $(PYLIB_SRC_EXT)/PyYAML-$(PYYAML_VERSION).tar.gz
+	# Download PyGreSQL using curl
+	curl -sSL https://files.pythonhosted.org/packages/source/P/PyGreSQL/PyGreSQL-$(PYGRESQL_VERSION).tar.gz -o $(PYLIB_SRC_EXT)/PyGreSQL-$(PYGRESQL_VERSION).tar.gz
+	# Install wheel and cython for PyYAML building
+	pip3 install --user wheel "cython<3.0.0"
 
 #
 # PyGreSQL
@@ -148,14 +148,14 @@ $(MOCK_BIN):
 	@echo "--- mock for platform $(UBUNTU_PLATFORM)"
 	@if [ "$(UBUNTU_PLATFORM)" = "Ubuntu" ]; then\
        pip3 install mock;\
-     else\
-	   mkdir -p $(PYLIB_SRC_EXT) && \
-	   pip3 download --no-deps --no-binary :all: --no-build-isolation mock==$(MOCK_VERSION) --dest $(PYLIB_SRC_EXT)/ && \
-	   mkdir -p $(PYTHONSRC_INSTALL_SITE) && \
-	   cd $(PYLIB_SRC_EXT)/ && unzip -q $(MOCK_DIR).zip && \
-	   cd $(PYLIB_SRC_EXT)/$(MOCK_DIR)/ && \
-	   PYTHONPATH=$(PYTHONSRC_INSTALL_PYTHON_PATH) python3 setup.py install --prefix $(PYTHONSRC_INSTALL) ; \
-	 fi;
+    else\
+       mkdir -p $(PYLIB_SRC_EXT) && \
+       curl -sSL https://files.pythonhosted.org/packages/source/m/mock/mock-$(MOCK_VERSION).zip -o $(PYLIB_SRC_EXT)/mock-$(MOCK_VERSION).zip && \
+       mkdir -p $(PYTHONSRC_INSTALL_SITE) && \
+       cd $(PYLIB_SRC_EXT)/ && unzip -q $(MOCK_DIR).zip && \
+       cd $(PYLIB_SRC_EXT)/$(MOCK_DIR)/ && \
+       PYTHONPATH=$(PYTHONSRC_INSTALL_PYTHON_PATH) python3 setup.py install --prefix $(PYTHONSRC_INSTALL) ; \
+    fi;
 
 # -----------------------------------------------------------------------------
 #