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3-22 IBM Informix OnLine Database Server Administrator’s Guide
Change Tape Size of Logical Log Tape Device
From the Command Line
1. Use an editor to edit the file specified by
$INFORMIXDIR/etc/$TBCONFIG.
2. Change the value of LTAPEBLK to the new block size, expressed in
kilobytes.
Change Tape Size of Logical Log Tape Device
The tape size of the logical log tape device is specified as LTAPESIZE in the
configuration file. Tape size refers to the maximum amount of data that
should be written to this tape, expressed in kilobytes.
You can change the value of LTAPESIZE while OnLine is in online mode. The
change takes effect immediately.
If the tape device pathname is /dev/null, the tape size is ignored.
If you are logged in as user informix, you can make this change from within
DB-Monitor or from the command line. If you are logged in as root, you must
use the command-line option.
Important: Any time you change the physical characteristics of the tape device, you
must create a level-0 archive. Otherwise, you might be unable to restore the complete
set of tapes. OnLine cannot switch tape devices during a restore. OnLine will expect
all logical log backup tapes to have the same block size and tape size as were specified
at the time of the most recent level-0 archive.
From DB-Monitor
1. Select the Logical-Logs menu, Tape-Parameters option to change the
value of LTAPESIZE. DB-Monitor displays the current value.
2. Enter the new tape size expressed in kilobytes in the Tape Size field
that appears under the Log Tape Device field.