TMF Operations and Recovery Guide (G06.26+)

Routine Maintenance
HP NonStop TMF Operations and Recovery Guide—522417-003
2-8
Initiating an Audit-Trail File Rollover
Reason: Volume is down
Meaning. The volume on which the audit-trail file resides is down, so TMF cannot
perform the operation needed to release the file.
Action. Perform the maintenance needed to bring the volume back online.
Initiating an Audit-Trail File Rollover
TMF normally begins writing audit records to a new active audit-trail file when the
current file becomes full. This activity is known as a “rollover.” You can use the NEXT
AUDITTRAIL command to cause an audit-trail file rollover at any time. When you
issue the NEXT AUDITTRAIL command, auditing to the current audit-trail file stops and
the next available audit-trail file becomes the current audit-trail file.
The NEXT AUDITTRAIL command can be issued only by members of the super user
group.
Rollover Errors
If TMF cannot find a preallocated or an available file for an audit-trail rollover, it
generates the following EMS message:
Unable to find an available audit trail file for name audit
trail.
Use the STATUS AUDITTRAIL command to determine why there are no files available
for the rollover. See Why Audit-Trail Files Stay Pinned on a Volume on page 2-5 for
suggestions on freeing audit-trail files for reuse.
If the current audit-trail volume goes down and you issue a NEXT AUDITTRAIL
command for this audit trail before the TMP detects that the volume is down, the TMP
terminates without issuing an EMS message. To correct this condition, bring the audit-
trail volume back up and issue a START TMF command to resume transaction
processing.
Large Audit Trails
TMF recognizes two audit-trail file formats:
•
Format 1 supports audit-trail files up to 2047 MB long.
•
Format 2 supports audit-trail files up to 1048575 MB long, commonly called “large
audit-trail files.”
TMF configuration operations that involve large audit-trail files may also be performed
as part of standard TMF maintenance. For details about these operations, see TMF
Planning and Configuration Guide.