Gateway Tomcat Hang with HTTP 500 errors in localhost_access log (Doc ID 2701947.1)

Last updated on JANUARY 25, 2023

Applies to:

Symptoms

Siebel is implemented with 5 node native gateway clustering, Every day randomly one of the gateway tomcat node hangs and localhost_access*log reported with HTTP 500 errors. Restart of gateway tomcat(cgw) helps to resolve the issue.

Issue reported every day during peak loads and below errors reported during HTTP 500 errors are reported:

Cloudgateway
[ERROR] 2020-05-02 09:08:07.189 [https-jsse-nio-9011-exec-5-EventThread] CG_LOGGER - com.siebel.opcgw.cloudgateway.ServerDataWatch:Error in retrieving children nodes for the path /SvcDiscovery/BSSPRDB2CENT/eProdCfgObjMgr_enu###B2CPRODPC2/PID_28062
[ERROR] 2020-05-02 09:08:07.189 [https-jsse-nio-9011-exec-5-EventThread] CG_LOGGER - com.siebel.opcgw.cloudgateway.ServerDataWatch:
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired for /SvcDiscovery/BSSPRDB2CENT/eProdCfgObjMgr_enu###B2CPRODPC2

localhost.access.log

xx.xx.xx.xx - - [02/May/2020:09:08:36 +0300] "GET /siebel/v1.0/cloudgateway/discovery/services/eaiobjmgr_enu/connectstring HTTP/1.1" 500 1081
xx.xx.xx.xx - - [02/May/2020:09:08:39 +0300] "GET /siebel/v1.0/cloudgateway/discovery/services/ecommunicationsouimgr_ara/connectstring HTTP/1.1" 500 1081

Changes

Cause

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