db2fmcu - Db2 fault monitor controller command

Db2 Fault Monitor is the Db2 database facility that automatically starts an instance after a crash. It can also auto restart an instance on machine reboot. You can configure the Db2 fault monitor on Linux® and UNIX operating systems using the Db2 fault monitor controller command. The command must be run as root because it accesses the system's inittab file.

Authorization

Root user authority

Required connection

None

Command syntax

Read syntax diagramSkip visual syntax diagramdb2fmcu-u-pdb2fmcd_path-d-finittab

Command parameters

-u -p db2fmcd_path
This option re-configures the inittab file to include the fault monitor controller (FMC) at system startup, where db2fmcd_path is the complete path to the FMC daemon (db2fmcd) object, for example /opt/IBM/db2/bin/db2fmcd.
As of Red Hat Enterprise Linux (RHEL) 6, the /etc/inittab file has been deprecated. Specifying this option creates or replaces the db2fmcd.conf file under the /etc/init directory.
-d
This option changes the inittab file configuration to prevent the FMC from being run at system startup.
As of RHEL 6, the /etc/inittab file has been deprecated. Specifying this option removes the db2fmcd.conf file.
-f inittab
This option specifies a path to the inittab file.

Examples

To start the fault monitor controller at system startup by re-configuring the inittab file, run the following command:
db2fmcu -u -p /opt/IBM/db2/bin/db2fmcd
To prevent the fault monitor controller from being launched at system startup, run the following command:
db2fmcu -d

Usage notes

  • If you changed /etc/inittab manually, you need to send SIGHUP to process 1 to ask it to re-scan /etc/inittab right away. Otherwise, it can take some time before the next re-scan happens. If you updated /etc/inittab via db2fmcu, you do not need to send the signal as it is already done by the db2fmcu command.