Troubleshooting

 

Troubleshooting Backup and Restore Sessions

 

reset by peer. It is possible that some parallel restore sessions are

 

completed without errors, while other restore sessions are not even

 

started.

Action

A workaround for this problem is to set the SmMaxAgentStartupRetries

 

global variable in the Data Protector global options file (located in

 

/etc/opt/omni/options/global) to 2 or more (max. 50). This variable

 

specifies the maximum number of retries for the session manager to

 

restart the failed agent before it fails. Refer to “Global Options File” on

 

page 523 for more information about the Data Protector global options

 

file.

 

Backup Protection Expiration

 

When scheduling backups, you have set the same protection period for

 

full and incremental backups, which means that incremental backups

 

are protected for the same duration as the relevant full backup. The

 

consequence of this is that your data will actually only be protected until

 

the full backup expires. You cannot restore incremental backups that

 

have been based on expired full backups.

Action

Configure the protection for your full backups so that they are protected

 

for longer than your incremental backups.

 

The time difference between the protection for the full backup and the

 

incremental backup should be the amount of time between the full

 

backup and the last incremental backup before the next full backup. For

 

example, if you run incremental backups Monday through Friday and

 

full backups on Saturday, you should set the protection of the full backup

 

to at least 6 days more than for the incremental backups. This will keep

 

your full backup protected and available until your last incremental

 

backup expires.

 

Troubleshooting Application Database Restores

 

A poorly-configured DNS environment could cause problems with

 

database applications. If you try to restore a database and it fails with

 

the message Cannot connect to target database or Cannot create

 

restore set, the problem is as follows:

 

When backing up the database on a system, the agent that starts on the

 

system logs the system’s name to the database as

 

<system.company.com>. The Restore Session Manager wants to restore

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Chapter 12

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HP B6960-90078 manual Backup Protection Expiration, Troubleshooting Application Database Restores, 586