IBM 000-8697 User Manual

IBM Informix OnLine Database Server Administrator’s Guide

The tbinit daemon compares the values stored in the configuration file with
the values formerly stored in the root dbspace reserved page

PAGE_CONFIG

.

Where differences exist, tbinit notes both values (old and new) in a message
written to the OnLine message log. This action is for documentation only;
tbinit

has already written the new values from the configuration file into the

root dbspace reserved page.

The tbinit daemon reads the value of

RESIDENT

, the configuration parameter

that describes shared-memory residency. If

RESIDENT

 is set to 1, tbinit calls

the tbmode utility process, which tries to enforce residency of shared
memory. If the host

UNIX

 system does not support forced residency, the

initialization procedure continues and residency is not enforced. An error is
returned.

Setting residency is the last initialization task that the daemon performs.
After the

RESIDENT

 parameter is processed, the tbinit daemon remains

running indefinitely. From this point forward, tbinit serves as the OnLine
master daemon.

The tbinit process initializes disk space when user informix or root executes
either of the following commands:

■

■

You can execute either of these commands from the

UNIX

 prompt. If you

initialize shared memory from within

DB-M

onitor, the tbmonitor process

executes tbinit -i -s from the Parameters menu, Initialize option. Refer to

 for further information about each of the tbinit command-line

options.