IBM 000-8697 Manual Do Utilizador

IBM Informix OnLine Database Server Administrator’s Guide

If you modify the configuration file while OnLine is online, you might want
to compare the current configuration values with the new values stored in the
file specified as

 TBCONFIG

.

To obtain a copy of your current, effective OnLine configuration through

DB-M

onitor, choose the Status menu, Configuration option. You are asked to

supply a filename for the output file. If you supply a filename (without a
directory location), a copy of the current configuration is stored in
filename.out

 in the current working directory.

To display a copy of the configuration file, $

$TBCONFIG

,

execute the command tbstat -c at the

UNIX

prompt while OnLine is running.

(If

TBCONFIG

 is not specified, OnLine displays the contents of $

 by default.)

You can use a

UNIX

 system editor to create other configuration files (apart

from tbconfig.std, tbconfig, and the file specified by

TBCONFIG

). Each config-

uration file must be located in the $

 directory. The

requirement that all configuration files must exist in $

means that you cannot make the directory read-only. If you do, you are
unable to save any parameter changes you make from

DB-M

onitor during

OnLine operation. The installation procedure creates the $

with read-only permissions for all users except root and user informix.

Do not add parameters to a configuration file that are not included in
tbconfig.std

. If you do, the next time you attempt to modify a configuration

parameter or initialize shared memory through

DB-M

onitor, OnLine detects

that the unknown parameters do not exist in tbconfig.std and rejects them as
invalid. OnLine removes any parameters from the configuration file that do
not exist in tbconfig.std.

Do not remove the tbconfig.std file. If you do, OnLine is unable to create a
new configuration file the first time you attempt to modify a parameter or
initialize shared memory through

DB-M

onitor.

Informix recommends that you do not alter the contents of the tbconfig.std
file. All supported parameters are contained in tbconfig.std.