Question & Answer
Question
How do you run the IBM Rational ClearCase dbcheck utility on a read only file system for Microsoft Windows, UNIX and Linux?
Cause
Historically, dbcheck could not be run on read-only files systems.
One example of where this has been problematic is when a VOB is stored on a NAS device using the snapshot or flash backup features. The snapshot of the disk can be taken instantaneously, but it is a read-only version of the disk at that time. Running dbcheck on a read-only volume will yield the following error:
db_VISTA Version 3.20
Database Consistency Check Utility
Copyright (C) 1985-1990 Raima Corporation, All Rights Reserved
*** db_VISTA database error -4 - invalid database
Database consistency check prematurely terminated
Last db_status = -4
1 error was encountered in 0 records/nodes
Answer
There is a new undocumented switch for use with dbcheck.
The -R switch will allow the dbcheck utility to run against a read-only file system.
Note: This is a capital "R". The lowercase "r" has a different meaning that causes different behavior.
This feature was introduced in the following patches:
UNIX and Linux Versions | Patch/Service Release |
2003.06.00 ClearCase | clearcase_p2003.06.00-21 |
2002.05.00 ClearCase | clearcase_p2002.05.00-42 |
2003.06.00 ClearCase LT | clearcase_lt_p2003.06.00-11 |
2002.05.00 ClearCase LT | clearcase_lt_p2002.05.00-20 |
Windows Versions | Patch/Service Release |
2003.06.00 ClearCase and CCLT | Service Release 5 |
2002.05.00 ClearCase | clearcase_p2002.05.00.NT-37 |
2002.05.00 ClearCase LT | clearcase_lt_p2002.05.00.NT-14 |
Related Information
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Document Information
Modified date:
16 June 2018
UID
swg21207935