Troubleshooting NMS Performance Issues

(Doc ID 2340520.1)

Last updated on DECEMBER 22, 2017

Applies to:

Oracle Utilities Network Management System - Version 1.11.0.4 and later
Oracle Network Management for Utilities - DMS - Version 1.11.0.4 and later
Information in this document applies to any platform.

Symptoms

On : 1.11.0.4 version, SW- System Wide

NMS Performance is slow

On November 28 from 2pm to 3:20pm, operators noticed a severe performance drop.
This was especially noticeable when printing a switch sheet.

MTService would also get frequently get disconnected from ISIS during the performance problems.

11/28 14:29:09: MBService 0xb22,ctp=110379f08,"MBService::multiNotify" Received TRANSACTION_READY for patch 42543
Isis warning on 127.0.0.1 (pid 12451904) Tue Nov 28 14:31:26 2017
in ISIS_MGT_INTERCL_MODULE ../../clib/cl_inter.c/intercl_sweep_cb(), line 3793
Process (1/44:12451904.0): many (14) retransmissions to (1/44:17039510.0)... continuing to retry
Isis warning on 127.0.0.1 (pid 12451904) Tue Nov 28 14:31:41 2017
in ISIS_MGT_BYPASS_MODULE ../../clib/cl_inter.c/intercl_ioq_failed(), line 6029
Process (1/44:12451904.0): unable to communicate with (1/44:17039510.0)
... asking <isis/protos> to break connection
Dump requested on Tue Nov 28 14:31:41 2017

The nmon report contained this data:


The DISKBUSY tab showed hdisk0 was at almost 100% utilization from 14:00 to 15:20.


The MEM tab showed the system had almost no free memory ( less than 300 megabytes ) from 14:00 to 15:20.


The PAGE tab showed a large amount of paging in and paging out during 14:00 to 15:20.

Changes

 

Cause

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