Comment out Xshareclasses to lower SHRLIBRGNSIZE usage
Article ID: 407245
Updated On:
Products
Issue/Introduction
Hitting System Limit for SHRLIBRGNSIZE.
D OMVS,L Output: CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT SHRLIBRGNSIZE 187695104 235929600 235929600
Environment
Release 14.0
Cause
By default, CCS Apache Tomcat has the -Xshareclasses option to improve performance, and OM Web Viewer service is based on CCS Tomcat.
This can lead to excessive Tomcat caching and increased SHRLIBRGNSIZE usage.
Resolution
Comment out the following line to disable Tomcat caching, which will lower Tomcat STC usage towards SHRLIBRGNSIZE.
IJO="$IJO -Xshareclasses:name=cacheDMD"
Restart Tomcat after any change made in WSTOMENV
If there are other Web Based application (Tomcat) installed on the same system, use the same Java version for all Tomcat instance could save JVM shared library (.so) storage usage.
Additional Information
Refer IBM documents:
Refer attached file:
SHRLIBRGNSIZE_and_Effect_on_31-Bit_JVM_Storage_Needs.pdf
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