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Announcement Support for this product will end on November 3, 2025. We recommend that you use PATROL for Linux, PATROL for AIX, or PATROL for Solaris to monitor operating systems.

Introduction to using composite parameters

Composite parameters are parameters whose values are dependent on one or more existing BMC PATROL parameters. You can assign BMC PATROL alarm settings and recovery actions on the newly created parameters in the same way that you use alarm settings and recovery actions on other parameters.

A composite parameter expression consists of one or more relational clauses joined by Boolean (logical) operators. A relational clause can have one of the following forms:

  • Parameter (relational operator) constant or string
  • Constant or string (relational operator) parameter
  • Parameter (relational operator) parameter

A relational operator can be any of the standard PSL relational operators (that is, <, >, ==, <=, >=).

Relational clauses can be combined using the logical operators AND (&&) and OR (||).

The result of a composite parameter expression is a BMC PATROL parameter condition, such as "alarm when true," or "warn when false."

For example, you can build a composite parameter that triggers a BMC PATROL alarm indicating low memory conditions only when both of the following conditions are true:

  • CPUWio > 40
  • MEMPFault > 15

See Examples-of-COMPOSITES-parameter-expressions for detailed examples.

 

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BMC PATROL for UNIX and Linux 9.13