Kbase P97178: -n parameter shows a different value in the database logfile then what it was started as
| Autor |
Progress Software Corporation - Progress |
| Acesso |
Público |
| Publicação |
31/12/2004 |
|
Status: Verified
FACT(s) (Environment):
UNIX
SYMPTOM(s):
-n parameter shows a different value in the database log file then what it was started as
The -n value written to the database log file does not equal the -n that was specified when starting the database.
Database starts with an incorrect value for -n
The below error may occur when starting the database:
BROKER : Warning: only <n> wait semaphores are available. (1093)
CAUSE:
A low setting for SEMMNS and SEMMNU UNIX Kernel parameters will keep the database from using the total amount specified for -n, as the database server was started without enough semaphores available to accommodate the maximum number of users (-n). When not enough semaphores are available, the following message appears as the server starts:
BROKER : Warning: only <n> wait semaphores are available. (1093)
The database server is started, but there may be operational problems when the number of users approaches the number specified in the -n startup parameter.
FIX:
Tune the semaphore-related parameters in the UNIX kernel according to Progress Solution P4741. Particularly: SEMMNS (max. semaphores per semaphore id), SEMMSL (total semaphores in the system) and SEMMNU.
The amount of kernel memory required for semaphores is relatively small, so setting the limits higher than your current needs may not hurt.