Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

Table 5-1
GAB static tunable parameters (continued)
Values (default
and range)
DescriptionGAB parameter
Default: 8
Range: 0-32
Determines whether the GAB logging
daemon is enabled or disabled
The GAB logging daemon is enabled by
default. To disable, change the value of
gab_ibuf_count to 0.
This can be overwritten while cluster
is up and running with the gabconfig
-K option. Use the gabconfig
command to control value of this
tunable.
gab_ibuf_count
Default: 60
Range: 0 - 240
Number of system statistics to maintain
in GAB
gab_kstat_size
About GAB run-time or dynamic tunable parameters
You can change the GAB dynamic tunable parameters while GAB is configured
and while the cluster is running. The changes take effect immediately on running
the gabconfig command. Note that some of these parameters also control how
GAB behaves when it encounters a fault or a failure condition. Some of these
conditions can trigger a PANIC which is aimed at preventing data corruption.
You can display the default values using the gabconfig -l command. To make
changes to these values persistent across reboots, you can append the appropriate
command options to the /etc/gabtab file along with any existing options. For
example, you can add the -k option to an existing /etc/gabtab file that might
read as follows:
gabconfig -c -n 4
After adding the option, the /etc/gabtab file looks similar to the following:
gabconfig -c -n4 -k
Table 5-2 describes the GAB dynamic tunable parameters as seen with the
gabconfig -l command, and specifies the command to modify them.
Tunable parameters
About GAB tunable parameters
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