Installing Oracle Client and Oracle Counters for Windows

Before you monitor Oracle Database, ensure that the following requirements have been met:

SQL*NET client software must be installed on the machine on which you run Performance Explorer.
SQL*Plus must be available on the machine on which you run Performance Explorer.
Oracle Counters for Windows Performance Monitor must be available.
The Oracle client must have DB administrator permissions and be able to recognize the targeted database server.
Note: Oracle Counters for Windows Performance Monitor is not installed with default installation options (for example, Instant Client and Administrator installations). It is only available via custom installation options.