Use the following guidelines to troubleshoot heavy problems:
1. Patch databases and operating systems regularly.
2. Contact database and o/s vendors to see if patches are associated with problems.
3. Insure Unix kernel tuning parameters match parameters specified by database and o/s documentation.
4. Insure your machine has adequate memory and processor resources.
5. Comparison test Multi-Tier drivers when Single-Tier drivers appear to expose limitations in a database native client.
6. Re-link Multi-Tier database agents against databases, especially patched databases.
7. Insure PortHigh is set in the [Protocol TCP] section of the Multi-Tier Session Rules Book. This is the oplrqb.ini file that resides in the /bin sub-directory of the server components installation.
8. Multi-Tier users perform the following test:
— login to the machine that contains the OpenLink server components.
— Run oplshut -s on the command-line.
— Compare the output to the Windows Task Manager or Unix ps -ef.
— Upgrade server components if oplshut shows fewer processes when compared to the Task Manager or ps.
Multi-Tier users experiment with database agent reuse. Users should do comparison test with the following values:
— ifsame process, upto 5
— ifsame application, upto 5
— ifsame database, upto 5