11G WebCacheAdmin Fails To Start With The Error "Unable to allocate or access a shared memory segment" (Doc ID 1057444.1)

Last updated on FEBRUARY 05, 2016

Applies to:

Oracle Fusion Middleware - Version 11.1.1.2.0 to 11.1.1.3.0 [Release Oracle11g]
Information in this document applies to any platform.
Checked for relevance on 22-Jan-2014

Symptoms

When starting WebCacheAdmin using "opmnctl startproc process-type=WebcacheAdmin", it fails and the "opmnctl status" shows the following:

$ $ORACLE_INSTANCE/bin/opmnctl status

Processes in Instance: asinst_1
---------------------------------+--------------------+---------+---------
ias-component | process-type | pid | status
---------------------------------+--------------------+---------+---------
emagent_asinst_1 | EMAGENT | 9519 | Alive
ReportsServer_ddiawlodso1_asins~ | ReportsServerComp~ | 9517 | Alive
Discoverer_asinst_1 | PreferenceServer | 9518 | Alive
Discoverer_asinst_1 | ServicesStatus | 9516 | Alive
wc1 | WebCache-admin | N/A | Down
wc1 | WebCache | 10409 | Alive
ohs1 | OHS | 9515 | Alive


Additionally, the WebCache event log shows the following:

[ADM 18/Dec/2009:12:21:44 -0500] [notification 9612] [ecid: -] Oracle Web Cache 11g (11.1.1), Build 11.1.1.1.0 090603.1900
[ADM 18/Dec/2009:12:21:44 -0500] [notification 9403] [ecid: -] Maximum number of file/socket descriptors set to 800.
[ADM 18/Dec/2009:12:21:44 -0500] [notification 13002] [ecid: -] Maximum allowed incoming connections are 500
[ADM 18/Dec/2009:12:21:44 -0500] [alert 11817] [ecid: -] Unable to allocate or access a shared memory segment of size 304 bytes. shmget(): Invalid argument
[ADM 18/Dec/2009:12:21:44 -0500] [alert 9609] [ecid: -] The server process could not initialize.
[ADM 18/Dec/2009:12:21:44 -0500] [notification 9610] [ecid: -] The server is exiting.
[ADM 18/Dec/2009:12:21:44 -0500] [alert 9000] [ecid: -] Oracle Web Cache process of ID 18172 exits with code 1 at line 650 of file main.c [label: Build 11.1.1.1.0 090603.1900]

 

Cause

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