The INFORMIXSHMBASE environment variable
affects only client applications connected to HCL
OneDB™ databases
that use the interprocess communications (IPC) shared-memory (ipcshm)
protocol.
Important: Resetting INFORMIXSHMBASE requires
a thorough understanding of how the application uses memory. Normally
you do not reset INFORMIXSHMBASE.
INFORMIXSHMBASE specifies
where shared-memory communication segments are attached to the client
process so that client applications can avoid collisions with other
memory segments that it uses. If you do not set INFORMIXSHMBASE,
the memory address of the communication segments defaults to an implementation-specific
value such as 0x800000.
value
is an integer (in KB) used to calculate the memory address.
The database server calculates the memory address
where segments are attached by multiplying the value of INFORMIXSHMBASE by 1,024.
For example, on a system that uses the C shell, you can set the memory
address to the value 0x800000 by entering the following
command:
setenv INFORMIXSHMBASE 8192
For
more information, see your HCL
OneDB
Administrator's Guide and
the HCL OneDB Administrator's
Reference.