emctl start oms Failed With 'Oracle Management Server is Down WARNING: Limit of open file descriptors is found to be 1024' and EMGC_OMS1.out File Reports '(Too many open files)' (Doc ID 1427402.1)

Last updated on AUGUST 28, 2017

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.1.0 and later
Information in this document applies to any platform.
Checked for relevance on 24-Oct-2013

Symptoms

OMS fails to start with the following error:

$<OMS_HOME>/bin>./emctl start oms

Starting WebTier...
WebTier Successfully Started
Starting Oracle Management Server...
Oracle Management Server is Down
WARNING: Limit of open file descriptors is found to be 1024.
For proper functioning of OMS, please set "ulimit -n" to be at least 4096.

$EM_INSTANCE_BASE/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/logs/EMGC_OMS1.out file reports the following error:

<Mar 2, 2012 2:10:04 PM IST> <Error> <HTTP> <BEA-101370> <There was a failure when merging library descriptors into the application descriptors for application /u01/Oracle/Middleware/oms/sysman/archives/emgc/deployments/GCDomain/emgc.ear/em.war. Please make sure that the descriptors are valid. The error is /u01/Oracle/Middleware/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/tmp/_WL_user/emdb/hylpx7/WEB-INF/web.xml (Too many open files)>
Caused By: java.io.FileNotFoundException: /u01/Oracle/Middleware/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/tmp/_WL_user/emdb/hylpx7/WEB-INF/web.xml (Too many open files)

Cause

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