Fixes are available
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21
APAR status
Closed as program error.
Error description
Ø SymbolTable tables are performance optimization for XML symbols that are re-used between XML messages. If each document processed by cached XML parser contains unique prefixes for example, the table would slowly grow until heap is under stress and OutOfMemory is triggered.
Local fix
Regular restarts will prevent the runtime hitting OutOfMemory situation.
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server * **************************************************************** * PROBLEM DESCRIPTION: Possible OutOfMemory (OOM) error when * * XML SymbolTable grows too large * **************************************************************** * RECOMMENDATION: * **************************************************************** SymbolTable tables are performance optimization for XML symbols that are re-used between XML messages. If each document processed by cached XML parser contains unique prefixes for example, the table would slowly grow until heap is under stress and OutOfMemory is triggered.
Problem conclusion
The custom system property "com.ibm.xml.xci.XSDGrammarResource.UseSoftReferences" was added to enable usage of soft reference SymbolTable which does not decrease memory usage but will enable garbage collection on less frequently used entries in symbol table. Defaults to false The fix for this APAR is currently targeted for inclusion in fix pack 8.5.5.15 and 9.0.0.11. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
Temporary fix
Comments
APAR Information
APAR number
PI92331
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
850
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-01-11
Closed date
2018-12-10
Last modified date
2018-12-10
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WEBS APP SERV N
Fixed component ID
5724H8800
Applicable component levels
R850 PSY
UP
R900 PSY
UP
Document Information
Modified date:
27 April 2022