ALLOW_AUTO_ROLLBACK Keyword

9.4D

The ALLOW_AUTO_ROLLBACK controls the rollback feature when defined for the primary replication server.

     ALLOW_AUTO_ROLLBACK={ON|OFF}

When this keyword is set to an ON state, a secondary server that is executing as a primary after a rollover to automatically transfer the primary control back to a primary server. In this case, the primary control can be returned to a primary server when the following conditions are met:

1. The primary server is actively running is connected to the secondary server that has the primary control.

2. The primary server has completed the synchronization phase to have all of its files updated for any changes that have been made on the secondary server while it has had the primary control.

3. There are no current users that are logged onto the secondary server.

When any secondary server logs onto the primary server, the port number that would allow logons to a secondary is validated. This is to not allow a misconfiguration that would prevent a primary server from detecting a secondary server that has the primary control after a rollover.

Example:

     [replication]

     ALLOW_AUTO_ROLLBACK=ON

See Also: SUNDM Keywords, SUNADMIN, MAKEMFD