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Installation and Initial Configuration 1-31
Identification Parameter Guidelines
LTAPESIZE
LTAPESIZE specifies the maximum amount of data that should be written to
each tape, expressed in kilobytes. If the pathname of the tape device is
/dev/null, the tape size is ignored. The default value of LTAPESIZE is
10,240KB.
Identification Parameter Guidelines
This section describes how to assign values to the OnLine identification
parameters.
OnLine identification parameters are an issue if you are configuring more
than one OnLine database server for a single host machine or if you plan to
integrate this OnLine database server into a network of OnLine servers that
use the client/server capabilities of IBM Informix STAR.
In either case, the database server processes require a method to uniquely
identify their associated OnLine shared memory space within UNIX shared
memory. The identification key is linked to the value of the SERVERNUM
parameter.
For a complete discussion of configuration issues affected by multiple
residency, refer to page 9-7. For information about IBM Informix STAR config-
uration issues, refer to the IBM Informix NET and IBM Informix STAR Installation
and Configuration Guide. For more information about the IBM Informix STAR
configuration parameters in the tbconfig.std file, refer to page 9-57.
SERVERNUM
SERVERNUM specifies a unique identification number associated with this
specific occurrence of OnLine. The identifier distinguishes this OnLine server
from all other database servers in the $INFORMIXDIR directory and the
network, if one exists.
The default value of SERVERNUM is 0. The value cannot exceed 255.
If OnLine and earlier database servers co-exist on the same machine, they
must have unique values for SERVERNUM. The SERVERNUM value for earlier
servers is implicitly set to 0. Therefore, OnLine requires a value that is greater
than 0.