Hi,

We have informix 10 and weblogic server with 100 users web application.
Whenever we are running application, it is getting crashed after 30-40 minutes.

Our hp unix server has 4GB physical memory.

Error which we got:-

shmget: [ENOMEM][12]: key 52574803: out of shared memory, check system max shared memory segment size
15:53:58 out of virtual shared memory

onstat -g seg output:-

$ onstat -g seg

IBM Informix Dynamic Server Version 10.00.HC5 -- On-Line -- Up 01:04:35 -- 999860 Kbytes

Segment Summary:
id key addr size ovhd class blkused blkfree
2424837 1381451777 80000000 757506048 254840 R* 184937 1
(shared) 1381451777 ad26a000 266350592 8792 V 50708 14319
Total: - - 1023856640 - - 235645 14320

Onconfig information on shared memory:-

SHMBASE 0x0 # Shared memory base address
SHMVIRTSIZE 260096 # initial virtual shared memory segment size
SHMADD 181780 # Size of new shared memory segments (Kbytes)
SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited

Kernal Information:-

semaem Static 16384 16384 16384 - pm_usync
semmni Static 2048 2048 2048 1.3% pm_usync
semmns Static 4096 4096 4096 4.2% pm_usync
semmnu Static 256 256 256 - pm_usync
semmsl Dynamic 2048 2048 2048 - pm_usync
semume Static 100 100 100 - pm_usync
semvmx Static 32767 32767 32767 - pm_usync
shmmax Dynamic 4294967296 4294967296 1073741824 23.8% vm_asi
shmmni Dynamic 1024 1024 400 0.6% vm_asi
shmseg Dynamic 1024 1024 300 - vm_asi

swchunk Static 2048 2048 2048 - vm


maxdsiz_64bit Dynamic 4294967296 4294967296 4294967296 1.1% vm
maxfiles Static 2048 - 2048 - fs
maxfiles_lim Dynamic 4096 4096 4096 1.5% fs
maxrsessiz Static 8388608 8388608 8388608 - vm
maxrsessiz_64bit Static 8388608 8388608 8388608 - vm
maxssiz Dynamic 268435456 268435456 8388608 0.3% vm
maxssiz_64bit Dynamic 268435456 268435456 268435456 0.0% vm
maxtsiz Dynamic 100663296 100663296 100663296 13.8% vm
maxtsiz_64bit Dynamic 1073741824 1073741824 1073741824 0.2% vm
maxuprc Dynamic 256 256 256 16.8% pm_proc

Please provide me a valuable suggeation. we are facing lot of problem because of this.

Thanks,
R V

Post AF-file which Informix generated in crash.

Thanks for your time...

I have attached the file.

Thanks,
Senthil Kumar R V

You should increase shmmax in OS kernel.
You can find values of kernel parameters in Informix release notes.