In addition to its current value, each database parameter has additional properties that describe it in further detail. These properties are defined in the default parameter file cserv.pcf (see Configuration Files).
Properties of Database Parameters
Property |
Permitted Values |
Description |
CASESENSITIVE |
YES | NO |
Case-sensitive |
CHANGE |
NO | RUNNING | OFFLINE |
Specifies whether and in which operational state the parameter can be changed NO = cannot be changed RUNNING = can be changed in ONLINE and ADMIN operational state OFFLINE = can only be changed in OFFLINE operational state |
CLEAR |
YES | NO |
When copying the parameters from an existing database instance to a new database instance, this parameter may not be transferred (for example, path of the run directory) |
DISPLAYNAME |
Character string, may contain blank characters |
Name that is displayed instead of the parameter name in the Database Manager GUI |
DYNAMIC |
YES | NO |
The default parameter file contains placeholders for the parameter (such as DATAVOL_?). |
GROUP |
GENERAL | EXTENDED | SUPPORT | NO | TRACE |
Group to which the parameter belongs: GENERAL: General Database Parameter EXTENDED: Special Database Parameter SUPPORT: Support Database Parameter NO: Parameter is not displayed in the Database Manager GUI TRACE: Parameter for the database trace, database check and monitor |
INSTANCES |
LVC | OLTP |
Database instance to which the parameter is relevant: LVC = SAP liveCache OLTP = OLTP (MySQL MaxDB) Not specified: Valid for all database instance types |
INTERN |
YES | NO |
YES = Value required for internal calculations |
LASTKNOWNGOOD |
|
Last valid value (value that the parameter had the last time the database instance was started successfully) |
MANDATORY |
YES | NO |
YES = Parameter has to be filled with a value (not null and not empty) |
MAX |
|
Maximum value |
MIN |
|
Minimum value |
MODIFY |
YES | NO |
Specifies whether the parameter can still be changed after the database instance is created (for example, NO for the RUNDIRECTORY parameter) |
VALUESET |
The individual values have to be separated from each other by blank characters or tabs. For character string parameters, the permitted character string constants have to be placed in quotation marks. |
Value set |
VOLUME |
YES | NO |
Type of parameter: YES = Volume parameter NO = Kernel parameter |
param_getproperties RUNDIRECTORY