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Procedure documentation Choosing Continuous or Manual Logical-Log Backup (ON-Bar)  Locate the document in its SAP Library structure

Use

You need to decide whether to back up the logical log of the Informix database with ON-Bar in continuous or manual mode.

Recommendation

SAP recommends you to use continuous backup with ON-Bar .

Procedure

Choose whether to use continuous or manual logical-log backup:

For continuous logical-log backup, set the ALARMPROGRAM or LOG_BACKUP_MODE parameters in the ONCONFIG file. For more information, see Performing Continuous Logical-Log Backup (ON-Bar).

The advantage of continuous logical-log backup is that the backup is performed when required, assuming that sufficient storage media is available. Therefore, you do not need to monitor the fill level of the logical log.

For manual logical-log backup, set the ALARMPROGRAM or LOG_BACKUP_MODE parameters in the ONCONFIG file. For more information, see Performing a Manual Logical-Log Backup (ON-Bar).

You must monitor your logical log and perform the logical-log backup manually before the log fills. Remember that a full logical log causes the database to stop processing.

For more information about setting the ALARMPROGRAM and LOG_BACKUP_MODE parameters, see Setting Parameters for Logical-Log Backup (ON-Bar).

 

See also:

Informix documentation at http://www.informix.com