SHMBASE

onconfig.std value

On UNIX: Platform dependent
On Windows: 0xC000000L

units

Address

range of values

Positive integers

takes effect

When the database server is shut down and restarted

utilities

To see the shared-memory segment addresses, use the onstat -g seg command.

refer to

Setting operating-system shared-memory configuration parameters, in the chapter on managing shared memory in the IBM Informix Administrator's Guide

SHMBASE specifies the base address where shared memory is attached to the memory space of a virtual processor. The addresses of the shared-memory segments start at the SHMBASE value and grow until the upper-bound limit, which is platform specific.

Do not change the value of SHMBASE. The onconfig.std value for SHMBASE depends on the platform and whether the processor is 32-bit or 64-bit. For information on which SHMBASE value to use, see the machine notes.