SQL Server 2008 Shrink log Empty Delete large log file

SQL2008 's shrink log due to SQL2008 's optimization of file and log management, the following statements can be run in SQL2005 but have been canceled in SQL2008: (SQL2005) Backuplog dnname withno_logGoDump TransactionDnname withno_logGo UseDnnameDBCCShrinkfile (2)Go--------------------------------------------------------------(SQL2008): In the SQL2008 to clear the log must be in simple mode, and so on after the removal of the action is complete and then back to full mode. Scenario One: Full command mode Use[Master]    GO    ALTER DATABASEDnnameSETRECOVERY Simple withno_waitGO    ALTER DATABASEDnnameSETRECOVERY Simple--Simple Mode    GO     UseDnnameGO    DBCCShrinkfile (N'Dnname_log', One, Truncateonly)GO     Use[Master]    GO    ALTER DATABASEDnnameSETRECOVERY fullwith no_waitGO    ALTER DATABASEDnnameSETRECOVERY Full  --revert to Full mode    GO

SQL Server 2008 Shrink log Empty Delete large log file