Technical Bulletin #10 - June 27, 1995

For Solaris 2.4 / PrestoServe Users


We would like to alert ClearCase customers running PrestoServe 2.4.1 and Solaris 2.4 to a problem that could potentially result in data corruption. Sun has announced, in EARLYNOTIFIER (SM) ALERT - Volume 1 Number 8 dated June 16, 1995, an incompatibility with PrestoServe 2.4.1 and Solaris 2.4 on SPARCcenter 2000/SPARCserver 1000 hosts. It reports that attempts to use such a configuration may result in data corruption. Sun recommends installing PrestoServe 2.4.2 upon its availability. For more information, you may retrieve this notice from SunSolve or contact Sun's Customer Service Center.

We have seen several instances of VOB data corruption in this configuration. This corruption may also be present in your VOB backups.

What To Do

If you are running this configuration and would like to ensure the validity of your data, you may do the following:
  1. Stop ClearCase on the machine where your VOBs are located.

    # /etc/init.d/atria stop

  2. Run the ClearCase dbcheck utility from the VOB's database directory. (This must be done as root.)

    # cd /db
    # /usr/atria/etc/utils/dbcheck -a -k vob_db

  3. If the results come back with 0 errors, then your VOB database appears to be okay. If you encounter problems with your VOB after a successful dbcheck, call Rational Customer Support.

    If you receive errors from the dbcheck, you should restore your most recent backup and run the dbcheck utility on it. If you find that your backups are also corrupt, please contact Rational Customer Support.

Any Questions?

Please contact Rational Support