15.10 - Extension Pointer - Call-Level Interface Version 2

Teradata Call-Level Interface Version 2 Reference for Mainframe-Attached Systems

prodname
Call-Level Interface Version 2
vrm_release
15.10
category
Programming Reference
featnum
B035-2417-035K

Extension Pointer is a four-byte field that specifies the address of the first or only DBCAREA extension.

 

In this language...

The variable name for Extension Pointer is...

COBOL

DBCAREA‑EXT‑PTR

PL/I

EXT_PTR

C

extension_pointer

IBM Assembler

DBCAXP

 

This routine...

Takes the action for Extension Pointer...

DBCHINI

writes

DBCHCL

reads (IRQ; IWPF)

 

Extension Pointer is used by...

To...

applications

write

Each extension applies only to particular functions, so care must be taken to address the proper extension before invoking a function and clearing the Extension Pointer when that function is complete.

For more information about DBCAREA extensions, see Chapter 4: “DBCAREA Extensions.”