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Which two statements are true about Oracle Managed Files (OMF)?
A. OMF cannot be used in a database that already has data files created with user-specified directions.
B. The file system directions that are specified by OMF parameters are created automatically.
C. OMF can be used with ASM disk groups, as well as with raw devices, for better file management.
D. OMF automatically creates unique file names for table spaces and control files.
E. OMF may affect the location of the redo log files and archived log files.
Correct Answer: DE
Explanation/Reference:
D: The database internally uses standard file system interfaces to create and delete files as needed for the following database structures:
Tablespaces
Redo log files Control files
Archived logs
Block change tracking files
Flashback logs RMAN backups
Note:
* Using Oracle-managed files simplifies the administration of an Oracle Database. Oracle-managed files eliminate the need for you, the DBA, to directly manage the operating system files that make up an Oracle Database. With Oracle-managed files, you specify file system directories in which the database automatically creates, names, and manages files at the database object level. For example, you need only specify that you want to create a tablespace; you do not need to specify the name and path of the tablespace’s datafile with the DATAFILE clause.
http://www.oracle-base.com/articles/9i/oracle-managed-files.php http://docs.oracle.com/cd/B10500_01/server.920/a96521/omf.htm
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