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Note: We recommend using a device class of FILE for the dsmserv unloaddb
and dsmserv loaddb operations. If you use any other type of device class for
the operations, you must use a drive that is assigned to a manual library
(library type of MANUAL). If the drive that you want to use is not assigned to a
manual library, you must edit the device configuration file to temporarily
change the definition so that it appears to be in a manual library.
Deciding whether you really need to reorganize the database
Reorganizing the Tivoli Storage Manager database is not a task to be taken
lightly. The load operation can take a long time (24+ hours) if your database is
large. To facilitate the process, Tivoli Storage Manager V5.3 introduced the
estimate dbreorgstats command. This command examines the database and
logs, and records an estimate of recoverable space in the activity log. You can
use this information to decide whether to go ahead. Example 14-19 shows the
command output.
The estimate dbreorgstats command itself may run for some time, consuming
I/O. It should not be run when the server is particularly active. In the case below,
it took close to two minutes to run on a database of about 500 MB.
Example 14-19 Estimate dbreorgstats
tsm: LOCHNESS_SERVER1>estimate dbreorgstats
ANS8003I Process number 3 started.
tsm: LOCHNESS_SERVER1>q pr
Process Process Description
Number
-------- -------------------- ----------------------------------------------
3 ESTIMATE DBREORG
tsm: LOCHNESS_SERVER1>q act search=reorg
Date/Time
------------------- ---------------------------------------------------------
03/02/2006 11:50:14 ANR2017I Administrator ADMIN issued command: ESTIMATE
03/02/2006 11:50:14 ANR0984I Process 3 for ESTIMATE DBREORG started in the
03/02/2006 11:50:14 ANR1782W ESTIMATE DBREORG process 3 started - server
03/02/2006 11:51:51 ANR1784I A database reorganization would reduce the
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IBM Tivoli Storage Manager Implementation Guide
Status
Processing table 62 of 140 total tables.
Evaluated 86578 pages.
Message
DBREORGSTATS (SESSION: 12)
BACKGROUND at 11:50:14. (SESSION: 12, PROCESS: 3)
performance may be degraded while this process is
running. (SESSION: 12, PROCESS: 3)
database utilization by an estimated 89 MB. (SESSION: 12,
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