Subject | "semaphoes are exhausted" using Firebird CS on Linux. |
---|---|
Author | KIMURA, Meiji |
Post date | 2006-05-29T00:01:59Z |
Hi All,
In one of my customer envirionment using FirebirdCS on linux, a Firebird output an error message to
firebird.log as below, and I cannot connect DB of firebird.
Fatal lock manager error: semaphores are exhausted, errno: 11
In the environment, this error occurs once a three-month. When this error occurs,
I cannot connect DB of firebird. I checked process on this computer and found the processes
of old (started yesterday or older) firebird. When I killed these, then new processes of firebird
runs.
I understood this error is related with 'LockSemCount' parameter in firebird.conf and *real*
semaphore limitation of Linux system. But I'm not sure that increment of LockSemCount solove this
problem. Please give me an information about this error or semaphores.
[Environment]
Firebird: CS-1.5.0.4290-0
Linux: Red Hat Enterprise Linux ES release 3(Taroon Update2)
Middleware: JayBird1.5.5
Memory: 2G-byte
Regards,
KIMURA, Meiji(FAMILY, Given)
Tokyo, JAPAN
In one of my customer envirionment using FirebirdCS on linux, a Firebird output an error message to
firebird.log as below, and I cannot connect DB of firebird.
Fatal lock manager error: semaphores are exhausted, errno: 11
In the environment, this error occurs once a three-month. When this error occurs,
I cannot connect DB of firebird. I checked process on this computer and found the processes
of old (started yesterday or older) firebird. When I killed these, then new processes of firebird
runs.
I understood this error is related with 'LockSemCount' parameter in firebird.conf and *real*
semaphore limitation of Linux system. But I'm not sure that increment of LockSemCount solove this
problem. Please give me an information about this error or semaphores.
[Environment]
Firebird: CS-1.5.0.4290-0
Linux: Red Hat Enterprise Linux ES release 3(Taroon Update2)
Middleware: JayBird1.5.5
Memory: 2G-byte
Regards,
KIMURA, Meiji(FAMILY, Given)
Tokyo, JAPAN