Tandem Failure Data System (TFDS) Manual

Troubleshooting
HP Tandem Failure Data System (TFDS) Manual—540122-003
E-2
Database Version Mismatch Error
Database Version Mismatch Error
In order to protect itself against potential access to older incident database formats, the
TFDS monitor verifies the version by reading the incident database Control File, and
follows these rules.
On Startup:
1. If the incident database location specified in the TFDS configuration file contains
incident database files with a different version, issue an EMS message and use the
default incident database location ($SYSTEM.ZTFDS)
2. If the incident database location is $SYSTEM.ZTFDS, and the version is different,
issue an EMS message and:
a. Purge $SYSTEM.ZTFDSOLD.TFDB*.
b. Rename $SYSTEM.ZTFDS.TFDB* to $SYSTEM.ZTFDSOLD.TFDB*.
•
If a failure occurs on the rename, delete the file from $SYSTEM.ZTFDS.
•
If a failure occurs on the delete, issue an EMS message and stop.
c. Alter the detail file $SYSTEM.ZTFDSOLD.TFDB002 to modify the alternate file
location.
•
If a failure occurs when altering the file, issue an EMS message and
continue.
3. If the incident database control file exists but is empty, the version cannot be
obtained. Issue an EMS message and:
a. Purge db-subvol.TFDB*.
b. Create a new set of db-subvol.TFDB*.
4. If the version is different and the TFDS monitor process name is not $ZDMP, issue
an EMS message and stop.
When DB-SUBVOL Is Specified in TFDSCOM:
1. If the version is different, or if there was an error while checking the version, issue
an error message and keep using the previous incident database location.
2. If the incident database control file exists but is empty, the version cannot be
obtained. Issue an EMS message and:
a. Purge db-subvol.TFDB*.
b. Create a new set of db-subvol.TFDB*.