You access the archecker utility when you use the onbar -v command. You can use archecker with the database server in any mode. The archecker utility verifies that all pages required to restore a backup exist on the media in the correct form. After you successfully verify a backup, you can restore it safely. If archecker shows problems with the backup, contact Technical Support.
The archecker utility verifies standard and whole-system backups. The archecker utility cannot verify logical-log backups. The archecker utility does not perform a restore.
Figure 13 shows how ON–Bar and archecker verify a backup. The archecker utility verifies level-0 backups on all database servers. The following steps correspond to the circled numbers in Figure 13.