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Extending STATSPACK for Disk I/O Data

Our data collection approach relies on I/O information from Oracle and from the physical disks. We will start by using existing STATSPACK tables, but we will also extend STATSPACK to add the disk I/O information. We will use the UNIX iostat utility to capture detailed disk I/O because almost every dialect of UNIX has the iostat utility. However, there is a dialect issue. Just as vmstat has different dialects, iostat is slightly different in each version of UNIX, and the Oracle DBA will need to customize a data collection mechanism according to his or her requirements. Even within the same dialect, there are arguments that can be passed to the iostat utility that change the output display.

The above is an excerpt from the "Oracle9i UNIX Administration Handbook" by Oracle press, authored by Donald K. Burleson.


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