Input syntax: -w [use_dbv|only_dbv]

This option can be used to make sure that the backup is readable and complete. Once the backup phase is complete, all the saved files are restored from the volume (fpr example, tape) in sequence (provided they were saved on a backup device), decompressed (when compress = yes was used), read by the check program, and compared with the originals. See also compress_dir.

During an offline backup, the file contents are compared in binary form. During an online backup, the sizes of the saved files are determined and checked.

See Log Supplements

use_dbv : Database backup followed by a restoration to a temporary directory and a check of the ORACLE block structure with the tool DB_VERIFY from Oracle.

only_dbv : Online block structure check on the database files with DB_VERIFY without backup:

Note that verification will approximately double the backup time required.

For security reasons, we recommend using this option at least once within the volume expiration period for your complete backups. It enables you to detect any possible hardware problems and undertake the appropriate measures.

Backup Verifications