Procedure 9-10 Problem: Statistics Are Rolling Over Too Quickly - Alcatel 5620 Troubleshooting Manual

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Procedure 9-10 Problem: Statistics are rolling over too quickly

Statistics database tables roll over, or lose statistics during an interval, if the tables fill
before all statistics are collected or the next collection interval starts. To ensure sufficient
statistics collection, consider the following:
Alcatel recommends that statistics collection planning includes the following
considerations, to prevent the loss of statistics interval data.
Alcatel 5620 Service Aware Manager, Release 2.1 R2
May 2005 95-5887-01-00-B
Go to the install directory/nms/config directory or folder and locate the
nms-server.xml file to check that redundant database configuration values are set
correctly to allow the 5620 SAM server to communicate with the active database
and, in the case of a database failure, the standby database.
i Open the nms-server.xml key file using a text editor.
ii Verify the following:
•
To allow automatic failover between the active and standby databases,
ensure the allowFailOver parameter is set to yes. The default is no.
•
To allow manual switchovers between the active and standby databases
using the client GUI, ensure the allowSwitchOver parameter is set to yes.
•
To specify the number of database connection retries initiated by the server
before a failover to the standby database is performed, ensure the
dbConnectMaxRetries parameter is configured.
•
The database name, database username, standby database name,
standbyHost, primaryTnsName, standbyTnsName, and passwords match
the settings configured during installation, as described in the 5620 SAM
Installation and Upgrade Guide.
iii Save the changes, if required, and close the file.
•
the statistics table size, depending on the configuration specified in the
5620 SAM Installation and Upgrade Guide
•
the number of statistics collected, the number of objects with statistics collection
enabled, and the frequency of statistics collection, as specified in the 5620 SAM
User Guide
•
the OSS application requests data from the statistics tables less frequently than
the configured roll over interval
•
FTP must be enabled on the managed device in order for the 5620 SAM to
retrieve statistics, and the user logged into the 5620 SAM must have FTP
permissions on the managed device, as specified in the 5620 SAM User Guide
•
measure the rate of statistics collection over a sufficient time interval
•
determine the appropriate collection interval and statistics database table size
based on individual network configurations
•
ensure that the base polling interval and the polling ratio are configured
sufficiently for the statistics you are polling in the MIB and MIB entries
9 — Troubleshooting 5620 SAM server issues
9-13