PK02889: 0C4 ABEND IN WEBSPHEREGETSTREAM OF THE HTTP PLUGIN UNDER HEAVY LOAD. | |||||||||||||||||||||||||||||||||||||||||||
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![]() APAR status Closed as program error. Error description During a period of heavy load, the HTTP plugin may take an 0C4 abend in websphereGetStream. The program stack of the abending thread will look similar to this: . websphereGetStream websphereWriteRequestReadResponse websphereRequestHandler websphereHandleRequest service_exit ApiClassExecute RedirectionOntheFly HTHandle HTSession server_loop . Closer inspection of the failing instruction will also possibly show an overlay in the LE SPILL area corrupting the addresses of parameters passed to websphereGetSteam.Local fix Problem summary **************************************************************** * USERS AFFECTED: All users of WebSphere Application Server * * V5.0 for z/OS * **************************************************************** * PROBLEM DESCRIPTION: With the System under stress the * * Customer encountered an * * ABEND0C4/ABENDS0C4 with the WebSphere * * HTTP Plugin for z/OS v502 * **************************************************************** * RECOMMENDATION: * **************************************************************** The default max sockets value 2048 used by the z/OS select:FD_SET command is too small for this customer's environment allowing a memory overlay which causes the ABEND0C4/ABENDS0C4.Problem conclusion Changed the value of the max sockets value from the default of 2048 to 32767, this change applies to z/OS only. Also put a check in place so that no attempt is made to use a socket number greater than the max allowed socket. APAR PK02889 is associated with SERVICE LEVEL W502028 of WebSphere Application Server V5.0 for z/OS.Temporary fix Comments
APAR is sysrouted FROM one or more of the following: PK02883 APAR is sysrouted TO one or more of the following: Modules/Macros
Publications Referenced
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Document Information |
Current web document: swg1PK02889.html
Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server for z/OS
Operating system(s):
Software version: 500
Software edition:
Reference #: PK02889
IBM Group: Software Group
Modified date: May 2, 2005
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