Fixes are available
Rational ClearCase Fix Pack 6 (9.0.1.6) for 9.0.1
Rational ClearCase Fix Pack 7 (9.0.1.7) for 9.0.1
Rational ClearCase Fix Pack 8 (9.0.1.8) for 9.0.1
Rational ClearCase Fix Pack 9 (9.0.1.9) for 9.0.1
Rational ClearCase Fix Pack 10 (9.0.1.10) for 9.0.1
Rational ClearCase Fix Pack 11 (9.0.1.11) for 9.0.1
APAR status
Closed as program error.
Error description
Under high transaction loads, Windows ClearCase servers are disproportionately impacted by file lock contention on vista.* files. The underlying cause is that the OS file lock API used by the database core has a fixed one-second retry interval. As such, any contended locks will introduce an immediate one-second delay in the operations in question. This issue is more prevalent when the VOB storage is on a Network Attached Storage device. Moving the retry logic into the application, where the retry intervals can be tuned resolves this issue.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * Users of Windows ClearCase servers. * **************************************************************** * PROBLEM DESCRIPTION: * * Under high transaction loads, Windows ClearCase servers are * * disproportionately impacted by file lock contention on * * vista.* files. The underlying cause is that the OS file lock * * API used by the database core has a fixed one-second retry * * interval. As such, any contended locks will introduce an * * immediate one-second delay in the operations in question. * **************************************************************** * RECOMMENDATION: * ****************************************************************
Problem conclusion
A fix is available in ClearCase version 9.0.1.6
Temporary fix
Comments
APAR Information
APAR number
PH03537
Reported component name
CLEARCASE WIN
Reported component ID
5724G2900
Reported release
901
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-10-02
Closed date
2019-03-22
Last modified date
2019-03-22
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
CLEARCASE WIN
Fixed component ID
5724G2900
Applicable component levels
R901 PSY
UP
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSSH27","label":"Rational ClearCase"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"901","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
17 October 2021