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During normal processing, CCITCPGW received TCP receive queue constrained

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Article ID: 6743

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Updated On:

Products

CIS COMMON SERVICES FOR Z/OS 90S SERVICES DATABASE MANAGEMENT SOLUTIONS FOR DB2 FOR Z/OS COMMON PRODUCT SERVICES COMPONENT Common Services Datacom/AD CA ecoMeter Server Component FOC EASYTRIEVE REPORT GENERATOR FOR COMMON SERVICES INFOCAI MAINTENANCE IPC UNICENTER JCLCHECK COMMON COMPONENT Mainframe VM Product Manager CHORUS SOFTWARE MANAGER CA On Demand Portal CA Service Desk Manager - Unified Self Service PAM CLIENT FOR LINUX ON MAINFRAME MAINFRAME CONNECTOR FOR LINUX ON MAINFRAME GRAPHICAL MANAGEMENT INTERFACE WEB ADMINISTRATOR FOR TOP SECRET Xpertware Compress Data Compression for MVS Compress Data Compression for Fujitsu

Issue/Introduction

CA-CCI address space CCITCPGW yields:

12:03:37 BPXF024I (SYSLOGD) May 15 16:03:37 MVSASYS1 TRMD.TCPIPÝ396¨: EZZ8662I 

12:03:37 TRMD TCP receive queue constrained entry logged: 05/15/2017 

12:03:37 16:03:23.42 , connid= A9133AAB , jobname= CCITCPGW , lipaddr= 

 

 

Cause

The format of the PROTOCOL statement is: PROTOCOL(protocol,netparm,retry,sysid,maxru,start/stop)  

In this case, the CAICCI PROTOCOL statement was coded as: 

PROTOCOL(TCPIPGW,7102,20,ASYSCCI) which sets the retry time to 20 minutes causing a 20 minute delay for the shutdown of CCITCPGW.

This value was detrimental to processing, and caused the "constrained" message.

 

Environment

z/os

Resolution

The default retry time should be 2 minutes, and the "delay" time would be 2 minutes as well. This will prevent the "constrained" message while dealing with unexpected misconfigurations

To accomplish the above, adjust the CAICCI protocol parm to:

PROTOCOL(TCPIPGW,7102,2,ASYSCCI) 

 

 

Additional Information

https://docops.ca.com/ca-common-services-for-z-os/14-1/en/component-reference/caicci-control-options/control-options-summary-caicci/protocol-protocol-netparm-retry-sysid-maxru-start-stop