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Donald K. Burleson

Oracle Utilities Tips

Networking Utilities

The utilities discussed in this chapter are those that assist the DBA in addressing networking and connectivity issues. The Oracle database may be perfectly tuned, but if the user cannot connect to it, the database is useless. Utilities such as tnsping, trcroute, traceroute, lsnrctl, ping, trcasst, and tracert will be covered in this chapter.

Managing Listeners with lsnrctl

The lsnrctl utility manages the Oracle listener processes. The Oracle listener process is required for database applications to access the database through SQL*Net or Net8. lsnrctl requires entries in the listener.ora file that specify the port for that listener. The listener.ora file is the configuration file for the network listener. It resides on the server and defines the network listener address, the SID for the database for which it listens, and other optional parameters for tracing and logging.

The lsnrctl command can be executed without parameters, in which the lsnrctl shell will be invoked, or it can execute commands directly when specified on the command line

To learn more about these techniques, see the book "Advanced Oracle Utilities: The Definitive Reference". 

You can buy it directly from the publisher and get instant access to the code depot of utilities scripts.



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