Chapter 6. Verifying the integrity of back-end databases

Procedure

1. Optional: List the back-end databases of the instance:

   # dsconf -D "cn=Directory Manager" ldap://server.example.com backend suffix list
   dc=example,dc=com (userRoot)

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2. Stop the instance:

   # dsctl instance_name stop

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3. Verify the database. For example, to verify the userRoot database, enter:

   # dsctl instance_name dbverify userRoot
   [04/Feb/2022:13:11:02.453624171 +0100] - INFO - ldbm_instance_config_cachememsize_set - force a minimal value 512000
   [04/Feb/2022:13:11:02.465339507 +0100] - WARN - ldbm_instance_add_instance_entry_callback - ldbm instance userroot already exists
   [04/Feb/2022:13:11:02.468060144 +0100] - ERR - ldbm_config_read_instance_entries - Failed to add instance entry cn=userroot,cn=ldbm database,cn=plugins,cn=config
   [04/Feb/2022:13:11:02.471079045 +0100] - ERR - bdb_config_load_dse_info - failed to read instance entries
   [04/Feb/2022:13:11:02.476173304 +0100] - ERR - libdb - BDB0522 Page 0: metadata page corrupted
   [04/Feb/2022:13:11:02.481684604 +0100] - ERR - libdb - BDB0523 Page 0: could not check metadata page
   [04/Feb/2022:13:11:02.484113053 +0100] - ERR - libdb - /var/lib/dirsrv/slapd-instance_name/db/userroot/entryrdn.db: BDB0090 DB_VERIFY_BAD: Database verification failed
   [04/Feb/2022:13:11:02.486449603 +0100] - ERR - dbverify_ext - verify failed(-30970): /var/lib/dirsrv/slapd-instance_name/db/userroot/entryrdn.db
   dbverify failed

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4. If the verification process reported any problems, fix them manually or restore a backup.

5. Start the instance:

   # dsctl instance_name start

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