diff --git a/web/pgadmin/tools/psql/__init__.py b/web/pgadmin/tools/psql/__init__.py
index cb10d5db..e99d169b 100644
--- a/web/pgadmin/tools/psql/__init__.py
+++ b/web/pgadmin/tools/psql/__init__.py
@@ -495,8 +495,9 @@ def invalid_cmd():
 
 def check_valid_cmd(user_input):
     """
-    Check if user entered a valid cmd and \\! command is preset as a string
-    only in current executing command. if \\! is present as command don't
+    Check if user entered a valid cmd and \\!, \\copy, \\e and \\ef command is
+    preset as a string only in current executing command.
+    if \\!, \\copy, \\e and \\ef is present as command don't
     allow the execution of command.
     :param user_input:
     :return:
@@ -512,6 +513,26 @@ def check_valid_cmd(user_input):
             if re.search("\\\!", sub_str):
                 stop_execution = False
                 # break
+            if re.search("\\\copy", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\e", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\ef", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\i", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\lo_import", sub_str.lower()) or \
+                    re.search("lo_import", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\lo_export", sub_str.lower()) or \
+                    re.search("lo_export", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\g", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\o", sub_str.lower()):
+                stop_execution = False
+            if re.search("\\\w", sub_str.lower()):
+                stop_execution = False
 
     if stop_execution:
         session_last_cmd[request.sid]['invalid_cmd'] = True
@@ -570,8 +591,87 @@ def enter_key_press(data):
         not config.ALLOW_PSQL_SHELL_COMMANDS and\
             not session_last_cmd[request.sid]['is_new_connection']:
         check_valid_cmd(user_input)
-    elif user_input == '\q' or user_input == 'q\\q' or user_input in ['exit',
-                                                                      'exit;']:
+    elif (user_input.lower().startswith('\copy') and
+            re.match("^\\\copy$", user_input.lower()))\
+            and not config.ALLOW_PSQL_SHELL_COMMANDS:
+        invalid_cmd()
+    elif re.search("\\\copy", user_input.lower()) \
+            and not config.ALLOW_PSQL_SHELL_COMMANDS \
+            and not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif (user_input.lower().startswith('\e') and
+            re.match("^\\\e$", user_input.lower())) and\
+            not config.ALLOW_PSQL_SHELL_COMMANDS:
+        invalid_cmd()
+    elif re.search("\\\e", user_input.lower()) \
+            and not config.ALLOW_PSQL_SHELL_COMMANDS \
+            and not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif (user_input.lower().startswith('\ef') and
+            re.match("^\\\ef$", user_input.lower())) and\
+            not config.ALLOW_PSQL_SHELL_COMMANDS:
+        invalid_cmd()
+    elif re.search("\\\ef", user_input.lower()) \
+            and not config.ALLOW_PSQL_SHELL_COMMANDS \
+            and not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif user_input.lower().startswith('\i') and \
+            re.match("^\\\i$", user_input) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and not is_new_connection:
+        invalid_cmd()
+    elif re.search("\\\i", user_input.lower()) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and \
+            not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif (user_input.lower().startswith('\lo_import') or
+            user_input.lower().startswith('lo_import')) and \
+            (re.match("^\\\lo_import$", user_input.lower()) or
+             re.match("^lo_import$", user_input.lower())) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and not is_new_connection:
+        invalid_cmd()
+    elif (re.search("\\\lo_import", user_input.lower()) or
+            re.search("lo_import", user_input.lower())) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and \
+            not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif (user_input.lower().startswith('\lo_export') or
+            user_input.lower().startswith('lo_export')) and \
+            (re.match("^\\\lo_export$", user_input.lower()) or
+             re.match("^lo_export$", user_input.lower())) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and not is_new_connection:
+        invalid_cmd()
+    elif (re.search("\\\lo_export", user_input.lower()) or
+          re.search("lo_export", user_input.lower())) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and \
+            not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif user_input.lower().startswith('\g') and \
+            re.match("^\\\g$", user_input.lower()) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and not is_new_connection:
+        invalid_cmd()
+    elif re.search("\\\g", user_input.lower()) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and \
+            not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif user_input.lower().startswith('\o') and \
+            re.match("^\\\o$", user_input.lower()) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and not is_new_connection:
+        invalid_cmd()
+    elif re.search("\\\o", user_input.lower()) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and \
+            not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+    elif user_input.lower().startswith('\w') and \
+            re.match("^\\\w$", user_input.lower()) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and not is_new_connection:
+        invalid_cmd()
+    elif re.search("\\\w", user_input.lower()) and \
+            not config.ALLOW_PSQL_SHELL_COMMANDS and \
+            not session_last_cmd[request.sid]['is_new_connection']:
+        check_valid_cmd(user_input)
+
+    elif user_input == '\q' or user_input == 'q\\q' or user_input in\
+            ['\quit','exit', 'exit;']:
         # If user enter \q to terminate the PSQL, emit the msg to
         # notify user connection is terminated.
         sio.emit('pty-output',