Veritas NetBackup™ for Microsoft SQL Server Administrator's Guide

About automatic retry of unsuccessful SQL Server backups

NetBackup for SQL Server provides the following options to retry unsuccessful backup attempts.

To use automatic retry, add the following line to your batch file.

RESTARTTYPE AUTO

By default, the unsuccessful backups are retried one time automatically after 60 seconds. To change the delay following the unsuccessful attempt, then add the following to your batch file.

RESTARTWAITSECONDS <integer>

You can also specify the number of retries. Add the following to your batch file.

NUMRESTARTS <1 to 9>

To use manual retry, add the following line to your batch file.

RESTARTTYPE MANUAL

Retry may also be used with file checkpoints. Any parts of the operation that fail can be written to a new batch file that can be launched either automatically or manually.

You can enable file checkpointing with automatic retry in the backup dialog in the NetBackup for SQL Server Client. Select a single database (or filegroup), then from the Resume options for this selection list, select Save work and restart at point of failure.

This action creates a batch file that contains the following scripting:

MAXRESTARTSETS 32
RESTARTWAITSECONDS 60
NUMRESTARTS 1

MAXRESTARTSETS 32 means that up to 32 pieces are backed up independently. The keywords RESTARTWAITSECONDS and NUMRESTARTS are synonymous with the following:

RETRYWAITSECONDS 60 
NUMRETRIES 1

These keywords indicates the following things: first, that an automatic retry is launched after 60 seconds for all of the pieces that failed to get backed up on the first time. Second, the restart is attempted only one time. You can manually change either of these parameters.

In addition, you can choose to not have the retry script automatically launched. Replace the NUMRETRIES command with RETRYTYPE MANUAL. For example, replace the following:

NUMRETRIES 1

with

RETRYTYPE MANUAL