9-14 IBM Informix OnLine Database Server Administrator’s Guide
How to Set Up Multiple Residency
Step 4: Complete Tuning OnLine Configuration (Optional)
AccessDB-Monitor or use an operating-system editor to modify other tuning
modifications to the configuration parameters if you wish. (If you execute
tbmonitor to useDB-M onitor, the configuration values that appear in
DB-Monitor are read from the configuration file specified by theTBCONFIG
environment variable.)
Step 5: Initialize New OnLine
When you initialize disk space for this OnLine database server, either
throughDB-Monitor or by executing the tbinit process at the command line,
tbinit takes as input the values in$INFORMIXDIR /etc/$TBCONFIG.
As you create new blobspaces and/or dbspaces for this OnLine database
server,be sure that each chunk is assigned to a unique location on the device.
OnLine does not allow you to assign more than one chunk to the same
location within a single OnLine environment, but it remains your responsi-
bility as administrator to make sure that chunks belonging to different
OnLine database servers do not overwrite each other.
Step 6: Ensure That Users Correctly Define Their TBCONFIG Variables
You might need to verify that your users understand the function of the
TBCONFIG environment variable. If a user’s environment supports two or
more OnLine database servers, the user must reset the TBCONFIG
environment variable each time he or she changes environments. Refer to
page 1-55 for more information about the role ofTBCONFIG.