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Use this command to check the database parameters on the basis of the properties, calculation formulas, and conditions stored in the default parameter file. How this proceeds depends on whether or not you opened a parameter session before executing the DBM command.

If you have opened a parameter session (see: param_startsession) and an error is found during the check, then the check is stopped and the results are output together with an error message. Correct the database parameter (see: param_put) and then start the check again. Repeat this procedure until the database parameter check does not find any more errors. All changes to database parameters are first buffered by the system. They are only entered in the parameter file when you explicitly confirm the changes you have made (see: param_commitsession).

If you start the check without first opening a parameter session, and the check finds an error, then the system adapts the changed parameter values to the valid rules and enters the new values in the parameter file. The changed values in the parameter file become only effective after a restart of the database.

Prerequisites

You have the server permission ParamCheckWrite.

Structure

param_checkall

Result

OK

Reply in the Event of Errors (with Parameter Session)

ERR

-24986,ERR_XPCHECK: param check failure/request

<parameter_name> <check_status>

<user_value>

<computed_value>

Values for the Reply Fields

Value

Description

<parameter_name>

Name of the database parameter

<check_status>

Check result

Possible values are: mandatory | constraint

mandatory: An obligatory database parameter has not been defined.

constraint: A condition defined in the default parameter file was not fulfilled.

<user_value>

Value defined by the user for the database parameter

<computed_value>

Default value calculated by the system

More Information

Database Administration, Database Parameters