Unlock DB2 Table Locks: Quick Guide

To unlock a locked DB2 table, you can try the following methods:

1. Check the lock situation: First, it is necessary to determine which session or transaction has locked the table. You can view locking information by executing the following SQL statement.

SELECT TABNAME, TABSCHEMA, LOCK_MODE, LOCK_STATUS FROM SYSIBMADM.LOCKS WHERE TABNAME = 'your_table_name';

1. To end a locked session: If you identify which session has locked a table, you can terminate the corresponding session to release the table lock. Use the following SQL statement to find the ID of the locked session:

SELECT AGENT_ID FROM SYSIBMADM.LOCKS WHERE TABNAME = 'your_table_name';

Then, use the following command to end the session:

FORCE APPLICATION (agent_id);

1. Automatic release of lock after timeout: If a locked session cannot be terminated, you can wait for a period of time, and the system will automatically release the expired lock.
2. Restart the database: If the above methods do not work, you can try restarting the DB2 database to release all table locks.

Remember to back up your data before performing any actions to prevent any unexpected incidents.