15.10 - Request Buffer Length - 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

Request Buffer Length is a four byte field that specifies the desired length of the buffer in which requests are placed for sending to the Teradata Database.

 

In this language...

The variable name for Request Buffer Length is...

COBOL

DBCAREA‑REQ‑BUF‑LEN

PL/I

REQ_BUF_LEN

C

req_buf_len

IBM Assembler

DBCIRBRL

 

This routine...

Does this for Request Buffer Length...

DBCHINI

writes

DBCHCL

reads (CON; RSUP; IRQ; IWPF; CMD; CRQ)

 

Request Buffer Length is used by...

To...

applications

write

The value of zero indicates that DBCHCL is to use the default value from the HSHSPB for the Request Buffer Length.

The application may change the value in Request Buffer Length. The minimum value is 256, and the maximum value is 2147483647.

When less than the maximum is specified, CLIv2 increases the size of the request buffer as needed.

Note: The maximum size request that can be specified for the Initiate Request function is 10, 12, or 24 bytes less than this buffer size, depending on support by the server. These bytes are used by CLIv2 to add a parcel header and a Respond‑type parcel.