After applying some general troubleshooting tips to narrow the scope of a problem, here are some techniques to further isolate the problem:

• Divide the system into sections.

  In a system with multiple sections or stages, carefully measure the variables going in and out of each stage until you find a stage where things do not look right. For example, if you run across a problem with a replication job, check to see if the job has run successfully before and try to determine the time frame when the job started to fail.

• Monitor system behavior over time (or location).

  Display a list of services and their current status using the Support> services showall command.

  Set up a process to monitor system activity over a period of time or to monitor system activity across the network. This monitoring is especially helpful to track down intermittent problems, processor activity problems, node connection problems, and so on.