如何开启Oracle block change tracking功能?
2013-08-12 23:14
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sys@TESTDB> alter system set db_create_file_dest='/u01/app/oracle/self_set/omf_dest' scope=both; System altered. sys@TESTDB> show parameter db_create NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ db_create_file_dest string /u01/app/oracle/self_set/omf_d est db_create_online_log_dest_1 string db_create_online_log_dest_2 string db_create_online_log_dest_3 string db_create_online_log_dest_4 string db_create_online_log_dest_5 string sys@TESTDB> alter database enable block change tracking; Database altered. sys@TESTDB>
操作步骤
SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;
由于没有指定存放路径,那么会按照Oracle Managed Files (OMF)参数DB_CREATE_FILE_DEST 指定的路径Oracle managed file (OMF)
A file that is created automatically by the Oracle database server when it is needed and automatically deleted when it is no longer needed.
如何判断你的数据库是否为支持OMF
SQL> show parameter db_create_file_dest;
如果Value 为空则不支持,有值则支持。
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