Try to get to the root of the problem first,
using the diagnosis techniques described throughout the Troubleshooting and support section of the information center. If your problem cannot
be resolved using these techniques, contact your IBM Support Center. Use the
procedure in this section only as a last resort.
If a broker's database becomes corrupted, follow the
instructions described in Recovering after the broker database fails. If the database
is not corrupted, but the problem cannot be corrected using problem determination,
perform the following sequence of operations to re-create the broker: 
- Ensure that no workbench users
are deploying to brokers. You must wait until these actions have
completed.
- Stop the broker using the mqsistop command.
- Stop the broker's queue manager using the endmqm command.
Take a backup of the broker database tables. These
tables are interdependent and must all be in a consistent state when restored.
You cannot backup or restore individual tables.
- Find the BrokerUUID value in
the following way:
- On Windows systems, use the regedit command
to examine HKLM\SOFTWARE\IBM\WebSphereMQIntegrator\<BROKER_NAME>\BrokerUUID and
note the BrokerUUID value.
- On Linux and UNIX systems,
use cat $MQSI_REGISTRY/registry/<BROKER_NAME>/BrokerUUID and
note the BrokerUUID value.
- Delete the broker using the mqsideletebroker command.
- Recreate the broker using the mqsicreatebroker command.
- Set the BrokerUUID to the value
that you noted during backup in the following way:
- On Windows systems, use the regedit command
to set HKLM\SOFTWARE\IBM\WebSphereMQIntegrator\<BROKER_NAME>\BrokerUUID to
the value that you noted during backup.
- On Linux and UNIX systems,
use print -n <VALUE_NOTED> <$MQSI_REGISTRY/registry/<BROKER_NAME>/BrokerUUID.
- Restore the broker database tables, either from the backup you
have just taken, or from a previously successful backup version.
- Start the broker using the mqsistart command.
- Redeploy the domain configuration to ensure that the configuration
across the broker domain is consistent.