SAS/ACCESS 9.2 for Relational Databases: Reference, Fourth Edition

Macro Variables and System Options for Relational Databases 4 DBSRVTP= System Option 407DBSRVTP= System OptionSpecifies whether SAS/ACCESS engines holds or blocks the originating client while makingperformance-critical calls to the database.Default value: NONEValid in: SAS invocationSyntaxDBSRVTP= ’ALL’ | ’NONE’ | ’(engine-name(s))’Syntax DescriptionALLindicates that SAS does not use any blocking operations for all underlyingSAS/ACCESS engines that support this option.NONEindicates that SAS uses standard blocking operations for all SAS/ACCESS engines.engine-name(s)indicates that SAS does not use any blocking operations for the specifiedSAS/ACCESS engines. You can specify one or more engine names. If you specifymore than one, separate them with blank spaces and enclose the list in parentheses.db2 (only supported under UNIX and PC Hosts)informixnetezzaodbc (indicates that SAS uses non-blocking operations for SAS/ACCESS ODBCand Microsoft SQL Server interfaces)oledboraclesybaseteradata (not supported on z/OS)DetailsThis option applies only when SAS is called as a server responding to multiple clients.You can use this option to help throughput of the SAS server because it supportsmultiple simultaneous execution streams, if the server uses certain SAS/ACCESSinterfaces. Improved throughput occurs when the underlying SAS/ACCESS engine doesnot hold or block the originating client, such that any one client using a SAS/ACCESSproduct does not keep the SAS server from responding to other client requests.SAS/SHARE software and SAS Integration Technologies are two ways of invoking SASas a server.This option is a system invocation option, which means the value is set when SAS isinvoked. Because the DBSRVTP= option uses multiple native threads, enabling thisoption uses the underlying DBMS’s threading support. Some databases handlethreading better than others, so you might want to invoke DBSRVTP= for some DBMSsand not others. Refer to your documentation for your DBMS for more information.