PQ84961: ZOS WEBSPHERE WITH THE HTTP PLUGIN RESULTS IN THE ZOS WEBSERVER ENDING WITH ABEND0C9 AT ASSUREWEIGHTSVALID+138 | |||||||||||||||||||||||||||||
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APAR status Closed as fixed if next. Error description Customer was running zOS WebSphere V5 at W501001 and using the zOS HTTP Plugin. The WebServer is ABENDING with an Abend0C9 in assureWeightsValid() . The customer has coded a <Server> tag in his plugin-cfg.xml that looks like: <Server CloneID="BA911C4E7D14BF80000002F0000000052B1C351F" LoadBalanceWeight="0" Name="ServerName"> <Transport Hostname="host1.com" Port="9082" Protocol="http"/> </Server> The LoadBalanceWeight="0" exposes a problem in WebSphere code. The LE TRACEBACK looks like: Entry E Addr E Offset Statement Load Mod Service __cdump 06D6E228 +0000017A CEEEV003 DRIVER9 EDCOWRP1 06CA2748 +000006F0 CEEEV003 sig_prgchk 0DB8EFE8 +00000662 *PATHNAM CEEPGTFN 06F07B58 +0000005A CEEPLPKA __zerros 06D70808 +000007EC CEEEV003 DRIVER9 CEEHDSP 06E6B628 +00000C0C CEEPLPKA assureWeightsValid 0E5BFA60 +00000138 1440 *PATHNAM W501000 serverGroupNextRoundRobinServer 0E5BE560 +00000120 1151 *PATHNAM W501000 serverGroupSelectServer 0E5C0100 +00000086 534 *PATHNAM W501000 websphereFindServer 0E59DC70 +00000180 2335 *PATHNAM W501000 websphereWriteRequestReadResponse 0E59D7B8 +00000230 2530 *PATHNAM W501000 esiResponseCreate 0E5E43E8 +00000538 576 *PATHNAM W501000 esiResponseGet 0E5E8108 +000000E0 1191 *PATHNAM W501000 esiHandleRequest 0E60B988 +00000104 155 *PATHNAM W501000 websphereHandleRequest 0E5A5398 +0000057E 2769 *PATHNAM W501000 service_exit 0E5F9D18 +000007BC 599 *PATHNAM W501000 AND SO ON...... Condition Information for Active Routines Condition Information for (DSA address 0EEEEB28) CIB Address: 0EEEFE68 Current Condition: CEE3209S The system detected a fixed-point divide exception (System Completion Code=0C9) Location: Program Unit: Entry: assureWeightsValid Statement: 1440 Offset: +00000138 Machine State: ILC..... 0002 Interruption Code..... 0009 PSW..... 078D0400 8E5BFB9A GPR0..... 00000000 GPR1..... 00000001 GPR2..... 0E68FAF8 GPR3..... 0E5BFA9A GPR4..... 0E630FD0 GPR5..... 0E634A68 GPR6..... 00000001 GPR7..... 0EEEEBDC GPR8..... 0E634DC0 GPR9..... 0E622EC8 GPR10.... 00013D40 GPR11.... 00000002Local fix Do not code LoadBalanceWeight="0". This effectively prevents the server from receiving any requests, same as removing the <Server> tag from the <ServerCluster> tag all together. Customer was using LoadBalanceWeight="0" as a convience to remove the server from the environment.Problem summary **************************************************************** * USERS AFFECTED: All users of WebSphere Application Server * * V5.0 for z/OS * **************************************************************** * PROBLEM DESCRIPTION: When running WebSphere Application * * Server V5.0 for z/OS using the * * zOS HTTP Plugin and specifying * * LoadBalanceWeight=0 in a <Server> tag * * in the plugin-cfg.xml file, * * the WebServer abends with Abend0C9 in * * assureWeightsValid(). * **************************************************************** * RECOMMENDATION: * **************************************************************** LoadBalanceWeight=0 was preventing the server from receiving any requests. In the module "ws_server_group.c", the function "weights_need_reset" should be called only once in the function "assureValidWeights". There is no need to loop until a server with valid weights is found. Also, current weight should be bumped only if the server is marked up.Problem conclusion Temporary fix Comments This APAR is being closed FIN with concurrence from the submitting customer. A solution to this problem will be delivered in a WebSphere Application Server for z/OS release within the next 18 months.
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: Modules/Macros Publications Referenced
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Document Information |
Current web document: swg1PQ84961.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 #: PQ84961
IBM Group: Software Group
Modified date: Jun 21, 2004
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