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3-56 IBM Informix OnLine Database Server Administrator’s Guide
Change Tape Size of Archive Tape Device
From the Command Line
1. To change the value of TAPEBLK from the command line, use an
editor to edit the file specified by $INFORMIXDIR/etc/$TBCONFIG.
2. Change the value of TAPEBLK to the new block size, expressed in
kilobytes.
Change Tape Size of Archive Tape Device
The tape size of the archive tape device is specified as TAPESIZE in the config-
uration 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 TAPESIZE 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 archive 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. From within DB-Monitor, select the Archive menu, Tape-Parameters
option to change the value of TAPESIZE. DB-Monitor displays the
current value.
2. Enter the new tape size expressed in kilobytes in the Tape Size field
that is associated with the Tape Device field.