The shared memory and semaphore kernel parameters on the
database server must have at least the minimum values shown. You might
need to increase them if there are more than 20 users per database
server. The values shown are values Informix® uses
for testing the port to each platform. Because the optimal values
depend on your hardware, network configuration, software, and workload,
ask your system administrator for assistance.
The ipcs command displays the current shared memory
that is in use. This command can help you debug shared memory problems.
When adding many more users to a database or creating a server,
you might need to increase the shared memory and semaphore kernel
parameter values.
Attention: Before changing the kernel parameters, be sure
to perform a complete backup of the system (for example, save a copy
of the kernel).
For supported versions of the operating systems,
see Readme - Rational® Synergy
7.2 releases.