Question & Answer
Question
What are IBM® Rational® ClearCase® deadman lock time-outs?
Answer
A deadman lock time-out occurs when a Rational ClearCase server process detects a client process is holding a lock and is not responding within a set limit of time.
To prevent deadlock situations whereby other client processes remain in a wait state for the lock to be released by the non-responsive client, the server process will terminate the connection of the non-responsive client and release the locks.
Typical examples of deadman lock time-out scenarios include, but are not limited to:
- Client loses its network connection.
- VOB elements owned by users or groups not present in current domain. Check with vob_siddump.
- Client process hangs or loops endlessly.
- Client process takes too long to complete an operation.
- Client host machine crashed or rebooted.
The time-out values for the deadman time-out value is set to 90 seconds.
For general information on Improving VOB Host Performance, refer to IBM Rational ClearCase Administration Guide.
Documentation
- Hardcopy can be ordered from the IBM Publications Center.
- On-line documentation can be found:
About the ClearCase Information Center
Note: The on-line ClearCase version 7.x documentation can be found in the IBM Publication Center and has been organized for you in technote 1239261.
2003.06:
HTML
PDF LINKS
Note: The 2003.06.00 ClearCase manuals can be found on-line in the Legacy Rational product documentation section for the ClearCase Family.
- Distributed Documentation
UNIX® and Linux®: /opt/rational/clearcase/doc/books
Microsoft® Windows®: C:\Program Files\Rational\ClearCase\doc\books
Related Information
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Document Information
Modified date:
16 June 2018
UID
swg21119236