BL_NUM_READ_THREADS= Data Set Option

Specifies the number of threads to use for bulk unloading from the DBMS into SAS.

Valid in: DATA and PROC steps (when accessing DBMS data using SAS/ACCESS software)
Categories: Bulk Loading
Data Set Control
Default: LIBNAME option value [Amazon Redshift, Google BigQuery]
none [Snowflake]
Range: 1–10
Requirement: To specify this option, you must first specify BULKLOAD=YES.
Data source: Amazon Redshift, Google BigQuery, Snowflake
Note: Support for Google BigQuery was added in SAS 9.4M7.
See: BL_NUM_READ_THREADS= LIBNAME option, BULKUNLOAD= data set option, BULKUNLOAD= LIBNAME option

Table of Contents

Syntax

BL_NUM_READ_THREADS=value

Required Argument

value

specifies the number of threads that are used to perform bulk unloading (retrieval) of data from a DBMS.

Last updated: February 3, 2026