IBM 000-8697 Manual Do Utilizador

System Architecture

As tbinit executes, it reads the configuration file named by the environment
variable

TBCONFIG

. Refer to

for further information about OnLine

configuration files and

TBCONFIG

.

You can direct OnLine to initialize shared memory in any one of six ways:

■

(

UNIX

 command line)

■

 (

UNIX

 command line)

■

 (

UNIX

 command line)

■

 (

UNIX

 command line)

■

Mode menu, Startup option (

DB-M

onitor)

■

Parameters menu, Shared-Memory option (

DB-M

onitor)

If you execute tbinit without options, OnLine is left in online mode after
shared memory is initialized.

You can also include a -y option to automatically respond “yes” to all
prompts.

The -p option directs the tbinit daemon not to search for (and delete)
temporary tables left by database server processes that died without
performing cleanup. If you use this option, OnLine returns to online mode
more rapidly, but space used by temporary tables left on disk is not
reclaimed.

The -s option initializes shared memory and leaves OnLine in quiescent
mode.

The Mode menu, Startup option initializes shared memory and leaves
OnLine in quiescent mode.

You do not reinitialize shared memory when you merely change modes from
quiescent to online.

The Parameters menu, Shared-Memory option displays the values in the
configuration file before tbinit initializes shared memory, enabling you to
review and modify the values. This option initializes shared memory and
leaves OnLine in quiescent mode.