9-12 IBM Informix OnLine Database Server Administrator’s Guide
How to Set Up Multiple Residency
Step 2: Edit the Configuration File for the New OnLine
Use an operating-system editor to edit the parameters in the new configu-
rationfile. Do not use DB-Monitor for this task. If you use DB-Monitor, you will
editthe values of the existing OnLine configuration file, and not the new one
as you intend. (DB-Monitor accesses the OnLine configuration indicated by
TBCONFIG at the time.)
In the new configuration file, change the following four configuration
parameters:
ROOTPATH
SERVERNUM
DBSERVERNAME
MSGPATH

ROOTPATH

TheROOTPATH parameter specifies the location of the root dbspace for this
OnLinedatabase server. The root dbspace location must be unique for every
OnLine configuration.
Important: Youcan use the same value for ROOTPATHif you are nesting several root
dbspaceswithin the ROOTPATH partition. That is,if the value of ROOTSIZE and the
ROOTOFFSET define a unique portion of the partition, multiple OnLine database
servers can share the sameROOTPATH.
Ifthe root dbspace is mirrored, you must also ensure that the location of the
root dbspace mirror, is unique. (The same situation exists if you are nesting
severalmirrors within the same partition. MIRRORPATHneed not be unique.)
Refer topage 1-21 for more general information about setting the value of
ROOTPATH andpage 1-24 for more information about MIRRORPATH. Also
consider whether offsets to the root dbspace or its mirror are required. If
offsets are needed, specify them with theROOTOFFSET and MIRROROFFSET
parameters.