In DB2, you may face this error. This error means that the access to the table is restricted. Do not be worry if you see this error because it may happen after the
ALTER TABLE DROP COLUMN statement.
In order to fix this error, you need to run the
REORG command as follows:
REORG TABLE [YOUR_TABLE_NAME]
After running this command, you will be able to access the table.
For more information about the DB2
REORG command check: