Starting the SESAM/SQL DBH

The SESAM/SQL DBH is a link and load module (LLM) called SESAM. When you start the SESAM LLM using the START-SESAM-DBH command or the START-PROGRAM command, this initializes the DBH session.

It makes it easier to use the SESAM/SQL Data Base Handler if you use IMON to install the product. If you do not do this, the files specified in the table “Default names of the system files” must exist with the default names specified in the table.

You parametrize the DBH at startup using DBH start statements and options.

The section “Specifying the correction status with the start command” describes the points to note when starting the SESAM DBH with different correction statuses.

This section describes how to start the DBH and pass the start parameters. The syntax and functions of the various start parameters are described in detail in a separate chapter (see chapter “DBH start statements and options”).

The following topics are dealt with in this section:

• Requirements for starting

• Starting the independent DBH

• Starting the linked-in DBH

• Starting multiple DBHs

• SESAM/SQL share modules

• Dynamic reconfiguration of the DBH session

The following always applies: Output sent to SYSOUT and SYSLST is not upwardly compatible. Output layout may vary depending on the version used.

64-bit load variant of the SESAM/SQL DBH

The 64-bit load variant of the SESAM/SQL DBH is loaded automatically on all current BS2000 servers with SESAM/SQL.
This can be recognized from the DBH start message on the insert “(64-Bit VERSION)” for /390 servers and “(X86-64-VERSION)” for x86 servers.

The 64-bit variant permits more powerful handling of the input/output load through a higher maximum value for the buffer for system-access data, see "SYSTEM-DATA-BUFFER".