A configuration file is a BS2000 file created by the user. In the configuration file the user can enter start parameters for the DBH. Users can also assign start parameters for SESDCN, for the utility monitor and for the connection module of the application program (DBCON) via the configuration file.
SESAM/SQL differentiates between several types of configuration file:
the configuration file for DBH start parameters
the configuration file for SESDCN start parameters
the configuration file for the DBCON or utility monitor start parameters
A global configuration file can be used to group together the configuration parameters for all or several different components.
All the files are SAM files which can be assigned any appropriate name and in which users specify the relevant parameters.
In 1. and 2. above, comment lines must start with “//REMARK”; in 3. they must start with “REMARK”. Strings of any alphanumeric characters can be used in comment lines. The end of the comment is the end of the line. Comment lines must not come between continuation lines, otherwise they will be interpreted as part of the statement.
Before starting the DBH, the user assigns one of the following files:
either the configuration file for DBH start parameters with the link name SESCONF or via the system file SYSDTA
or a global configuration file with the command CONNECT-SESAM-CONFIGURATION.
The same process is performed for SESDCN, DBCON and the utility monitor.
During the startup procedure, the parameters entered are passed to the DBH or to DBCON or to the utility monitor.
If a parameter to be evaluated in the configuration file contains a syntax error. The file is closed and the component started issues its own error message.