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

Data Set Options for Relational Databases 4 UPDATE_LOCK_TYPE= Data Set Option 397UPDATE_LOCK_TYPE= Data Set OptionSpecifies how data in a DBMS table is locked during an update transaction.Default value: LIBNAME settingValid in: DATA and PROC steps (when accessing DBMS data using SAS/ACCESSsoftware)DBMS support: DB2 under UNIX and PC Hosts, DB2 under z/OS, Microsoft SQL Server,ODBC, OLE DB, Oracle, Sybase, Sybase IQ, TeradataSyntaxUPDATE_LOCK_TYPE=ROW | PAGE | TABLE | NOLOCK | VIEWSyntax DescriptionNot all values are valid for every interface. See the details in this section.ROWlocks a row if any of its columns are going to be updated. (This value is valid in theDB2 under UNIX and PC Hosts, Microsoft SQL Server, ODBC, OLE DB, and Oracleinterfaces.)PAGElocks a page of data, which is a DBMS-specific number of bytes. (This value is validin the Sybase interface.)TABLElocks the entire DBMS table. (This value is valid in the DB2 under UNIX and PCHosts, DB2 under z/OS, Microsoft SQL Server, ODBC, Oracle, and Teradatainterfaces.)NOLOCKdoes not lock the DBMS table, page, or any rows when reading them for update. (Thisvalue is valid in the Microsoft SQL Server, ODBC, Oracle, and Sybase interfaces.)VIEWlocks the entire DBMS view. (This value is valid in the Teradata interface.)DetailsIf you omit UPDATE_LOCK_TYPE=, you get either the default action for the DBMSthat you are using, or a lock for the DBMS that was set with the LIBNAME statement.You can set a lock for one DBMS table by using the data set option or for a group ofDBMS tables by using the LIBNAME option.See the SAS/ACCESS documentation for your DBMS for additional, DBMS-specificdetails about locking.See AlsoTo assign this option to a group of relational DBMS tables or views, see the“UPDATE_LOCK_TYPE= LIBNAME Option” on page 196.