The SESAM/SQL Data Base Handler (DBH) is the central component for the control, execution and monitoring of database operation. The DBH:
analyzes the statements from the application programs, ascertains the best access method in each case, and executes the statements
returns the results of database operations to the application program
monitors all database activities
controls the service tasks for utility functions
logs important information on database activities in DBH-specific log files
reports errors
Figure 1: Tasks of the SESAM/SQL DBH
The “ Core manual” (see the chapter entitled “Database operation”) explains the fundamentals of the DBH, its functions and interfaces. You will also find an explanation in the chapter entitled “Backup concept” of how the DBH supports the security concept of SESAM/SQL.
This chapter covers the following topics:
Start commands
Starting the SESAM/SQL DBH and entering the start parameters
Terminating the SESAM/SQL DBH
DBH restart
Job variables
Maximum values for working with the SESAM/SQL DBH