3.3

128
n
The validation is a validation of ISAM key and record sizes to prevent problems after
software upgrades when the key and/or record sizes of any ISAM files changed for the new
software release.
Scans the database for errors, then rebuilds the free list and fixes bad story-link counts. A list
of block numbers can be specified, as shown by the [block# …] parameter above. A
diagnostic is printed whenever dbvisit encounters one of the specified blocks, which is
helpful for tracking down database corruption. Use dbvisit once a month as a part of your
regular maintenance.
There are two ways to run dbvisit:
• Without the -m option: The system must be offline and shut down. No one can log in
until dbvisit is complete.
• With the -m option: Specify a machine that will be running dbvisit. The system must be
offline and shutdown only long enough to enter the dbvisit command. Remaining
machines can be brought up for users to log into. After the dbvisit procedure is
complete, the machine running dbvisit can be reconnected following the normal
procedure.
c
Before you run dbvisit, ensure the system is offline and the system is shut down. If
dbvisit reports any errors, do not rebuild the free list; call Avid for assistance.
The dbvisit uses asterisks to display information related to search queues as opposed to other
queues or queue entries:
• Each dot = 1 queue
• Each asterisk = 1 search queue
• Each colon = 1000 queue entries
For instance:
NRCS-A# dbvisit -d
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14:57:22 traversing directory
14:57:22 (each dot = 1 queue; each asterisk = 1 search queue; each colon
= 1,000 queue entries)
14:57:22 **......:::::::::10:::::::::20:::::::::30:::::::::40::
14:57:50 :::::::50:::::::::60:::::::::70:::::::::80:::::::::90::
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