Database parameters define fundamental properties of the database instance.
The database system differentiates between general, special and support database parameters. The default parameter file cserv.pcf (see configuration files) includes the default values for the database parameters and a description of the permitted values.
liveCache database
instances have additional parameters.
Changes to database parameters do not take effect until the database instance is restarted.
When creating a new database instance, you can use the system default for the database parameters, use the database parameters from a different database instance, or else import database parameters from a complete data backup. The database instance can always be operated with the system default parameters. You can adapt the database parameters later to your individual requirements.
The database system saves the values of the database parameters in binary format in the parameter file of the database instance (see Configuration Files). To display or change the database parameters, use the Database Manager or the Database Assistant in SAP systems:
· Database Manager GUI, Displaying and Changing Database Parameters
· Database Manager CLI, Configuration of Database Instances
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Database Administration in CCMS: MySQL
MaxDB, Parameters
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Database Administration in CCMS: SAP
liveCache, Parameters
You can also use these tools to display the history of the values of the database parameters.
See also:
Properties of Database Parameters