Problem analysis needs to be managed in a distributed database
environment. Problem analysis involves both identifying and resolving problems
for applications that are processed across a network of servers.
Consider the following items:
- Distributed database processing problems manifest themselves in various
ways. For example, an error return code might be passed to a distributed database
application by the server that detects the problem. In addition, responses
might be slow, wrong, or nonexistent.
- Tools are available to diagnose distributed database processing problems.
For example, each distributed relational database product provides trace functions
that can help diagnose distributed data processing problems.
- When server failures are detected by an iSeries™ server,
the server logs information about program status immediately after the failure
is detected.
Note: If a correction to an IBM® program is required and if you have
an S/390® with
Network Distribution Manager (NDM) installed in the network, you can use the
NDM and the Distributed System Node Executive products to receive and transmit
updates and replacements to appropriate servers in the network.