17.00 - Session Limits - Parallel Transporter

Teradata® Parallel Transporter Application Programming Interface Programmer Guide

prodname
Parallel Transporter
vrm_release
17.00
created_date
June 2020
category
Programming Reference
featnum
B035-2516-220K

The values that you specify with the Stream driver TD_MIN_SESSIONS and TD_MAX_SESSIONS attributes are not the only factors that limit the number of sessions that the Stream driver establishes with the database.

The other limiting factors are:
  • The platform limit on the maximum number of sessions per application. This value is defined in the COP Interface software file, CLISPB.DAT, under the max_num_sess variable.

    You can use the TDP SET MAXSESSIONS command to specify a platform limit. The default TDP MAXSESS value is 1024 sessions.

  • The limit of the network protocol software on workstation-attached systems. When the Stream driver executes, the actual session limit is determined by whichever limiting factor is encountered first.