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

176 READ_LOCK_TYPE= LIBNAME Option 4 Chapter 10SyntaxREAD_ISOLATION_LEVEL=DBMS-specific valueSyntax DescriptionSee the documentation for your SAS/ACCESS interface for the values for your DBMS.DetailsHere is what the degree of isolation defines:3 the degree to which rows that are read and updated by the current application areavailable to other concurrently executing applications3 the degree to which update activity of other concurrently executing applicationprocesses can affect the current applicationThis option is ignored in the DB2 under UNIX and PC Hosts and ODBC interfaces ifyou do not set the READ_LOCK_TYPE= LIBNAME option to ROW. See the lockingtopic for your interface in the DBMS-specific reference section for details.See AlsoTo apply this option to an individual data set, see the “READ_ISOLATION_LEVEL=Data Set Option” on page 361.“READ_LOCK_TYPE= LIBNAME Option” on page 176READ_LOCK_TYPE= LIBNAME OptionSpecifies how data in a DBMS table is locked during a READ transaction.Default value: DBMS-specificValid in: SAS/ACCESS LIBNAME statementDBMS support: DB2 under UNIX and PC Hosts, DB2 under z/OS, Microsoft SQL Server,ODBC, OLE DB, Oracle, Sybase, Sybase IQ, TeradataSyntaxREAD_LOCK_TYPE=ROW | PAGE | TABLE | NOLOCK |VIEWSyntax DescriptionROW [valid for DB2 under UNIX and PC Hosts, Microsoft SQL Server, ODBC,Oracle, Sybase IQ]locks a row if any of its columns are accessed. If you are using the interface to ODBCor DB2 under UNIX and PC Hosts, READ_LOCK_TYPE=ROW indicates that lockingis based on the READ_ISOLATION_LEVEL= LIBNAME option.