Home
Administering
Learn how to administer the product.
Administering DevOps Code ClearCase®
Learn about performing administrative tasks for a DevOps Code ClearCase® community including managing software licenses, user and group accounts, ClearCase server and client hosts, shared data, and the network that connects them.
Periodic maintenance
Periodic attention to storage management and repository integrity is an important administrative function. These topics describe VOB and view storage management tasks, the checkvob utility, and the DevOps Code ClearCase® scheduler, which you can use to automate many periodic maintenance chores.
About checkvob
VOBs have complex internal and external relationships that can sometimes be disrupted by system or network failures or when a VOB is restored from backup. checkvob is a cleartool subcommand that can find, and in many cases fix, a variety of problems in these relationships.
Using checkvob to find and fix internal VOB inconsistencies
A VOB storage directory contains a VOB database and a number of storage pools. Any operation that modifies VOB data makes changes to the database and at least one pool. When inconsistencies arise between the contents of a VOB database and the contents of its pools, VOB data integrity may be damaged.
Pool mode processing

Pool mode processing

When run with the –pool option, checkvob examines some or all of the VOB’s source, DO, and cleartext pools.

For each kind of pool (source, DO, cleartext):

Checks pool roots. Checks pool names, locations, and pool identity information. Each pool must have a valid pool_id file. Problems found at this stage cannot be fixed by checkvob and must be directed to IBM Software Support for Rational products.
For source pools, checks the installed type managers to verify that they support the get_cont_info method, which checkvob requires when processing elements.
For source and DO pools only:
1. Scans the VOB database for missing (referenced, but not found) or misprotected containers.
2. Generates a list of problem VOB objects.
3. If –fix is specified, processes each VOB object on the list as described in Individual file element or DO processing.
Scans for unreferenced data containers.
If –fix is specified, moves each unreferenced container to the pool’s lost+found directory.