Added a mechanism to detect a corrupt/broken config database file. Fixes #6460

web/pgadmin/setup/db_table_check.py

@@ -0,0 +1,32 @@
+##########################################################################
+#
+# pgAdmin 4 - PostgreSQL Tools
+#
+# Copyright (C) 2013 - 2021, The pgAdmin Development Team
+# This software is released under the PostgreSQL Licence
+#
+##########################################################################
+
+from pgadmin.model import Version
+from pgadmin.model import db
+
+
+def get_db_table_names():
+    db_table_names = db.metadata.tables.keys() if db.metadata.tables else 0
+    return db_table_names
+
+
+def check_db_tables():
+    is_error = False
+    invalid_tb_names = list()
+    db_table_names = get_db_table_names()
+    # check table is actually present in the db.
+    for table_name in db_table_names:
+        if not db.engine.dialect.has_table(db.engine, table_name):
+            invalid_tb_names.append(table_name)
+            is_error = True
+
+    if is_error:
+        return True, invalid_tb_names
+    else:
+        return False, invalid_tb_names