Not enough OMF memory

Problem:Solution

Increase OMF memory

Problem Details: The IMS went off the DCN every Five minutes

Cause Codes:

A new RTAB had been installed in the IMS. The Memory SIMMS were installed.

Cross DCN Test was done by disconnecting one media.

System performance for the node indicated that the pools were adequate.

The node fell off the DCN still at five minute intervals

It was decided to arm the SYSTEM_LOG_ACTIVE = Y, restart the IMS and wait for a crash.

Then view

/var/opt/advant/log/IMS/dcSystem.log and the /var/opt/advant/log/IMS/dcSystem.old

This showed the Virtual Memory was short because of the Protocol Machine crashing.

The OMF memory was increased to 10238 K bytes fro the default 3072

Q. Set the SYSTEM_LOG_ACTIVE to Y

U.11 Usage of dcSystem.log

All system messages are routed to the System Message Log and can be displayed with the

System Message Log Display. If problems occur a flag can be turned on to get more information

output to the file /var/opt/advant/log/IMS/dcSystem.log. also /var/opt/advant/log/IMS/dcSystem.old

Edit the /opt/advant/Startup/etc/dcStartup.env file and set the

SYSTEM_LOG_ACTIVE variable:

export SYSTEM_LOG_ACTIVE=Y

The IMS must be restarted to activate/deactivate the log file.

The dcSystem.log can be used to analyze how the system is running. However the log file

should normally not be used as standard since it can grow quite large and fill the system disk.

If the file gets large it can be truncated without stopping the IMS through the following

command:

cp /dev/null /var/opt/advant/log/IMS/dcSystem.log

R.4.9.5 Updating the OMF config.cfg File

The default memory allotment for OMF shared memory is 3 MB. If Memory Extensions For

User Objects and History indicate that more memory is required, you must update the OMF

config.cfg file located in /etc/opt/advant/OMF.

To do this:
Q. Change the access rights for the configuration file:

chmod 644 /etc/opt/advant/OMF/config.cfg

R. Modify the content of the configuration file config.cfg

The parameters are defined with the following syntax:

parameter name = value

The parameters are grouped in different sections. A new section is started with:

[section name]

Under the section [SharedMemory] change the memory size. The size must be a

multiple of 256:

# Size is in Kbytes

Size = 3072 --> New value

S. Restore the access rights for the configuration file:

chmod 444 /etc/opt/advant/OMF/config.cfg

T. Restart the IMS.