Oninit
Talk to an expert →

Informix Error -43336: (-43336) Logical Logs cannot be backed-up because the database server is dismissing the logical logs.

Cause and resolution

(-43336) Logical Logs cannot be backed-up because the database server is dismissing the logical logs.

If the database server was started with an ONCONFIG file containing the LTAPEDEV parameter with a value of '/dev/null' (UNIX), 'NUL', (Windows) or blank,logical log back up cannot be performed. These special values indicate that log backups are not desired. Data in this logical log cannot be restored in the future. Only whole-system backups are allowed.

ACTION If logical log restores are desired, then set the LTAPEDEV configuration parameter value to something other than '/dev/null' (UNIX), 'NUL' (Windows) or blank.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-43336 fires when LTAPEDEV is configured to dismiss (discard) logical logs — per the official guidance.

  1. LTAPEDEV set to /dev/null (UNIX), NUL (Windows), or blank, per the official guidance — these special values mean log backups aren't wanted; only whole-system backups are allowed, and this logical log's data can't be restored later.
Solutions / Resolution
  1. Set LTAPEDEV in ONCONFIG to a real value, per the official guidance, if logical log restores are desired.
Examples
Enabling logical log backup
# In $ONCONFIG — before (logs dismissed)
LTAPEDEV /dev/null

# After (logs retained)
LTAPEDEV /dev/ltape
Diagnostic Checks
  1. Check LTAPEDEV's configured value, and set it to a real device/path if logical log restores are needed.
Related Errors / Related Topics
  • -43338 — "(-43338) Non whole-system backups are not allowed if the database server is dismissing logical logs." A related consequence of the same LTAPEDEV dismiss setting, restricting the backup type instead of the log backup itself.

LTAPEDEV is set to dismiss logical logs, so they can't be backed up — set it to a real value if logical log restores are needed.