Which two data types can be converted to LOBs using an ALTER TABLE… MODIFY command？（）

多项选择题Onlineindexrebuildfunctionalityhasbeenextendedtoincludewhichfourindexstructures？（）

A.Bitmap indexes.
B.Reverse key indexes.
C.Function-based indexes.
D.Key-compressed indexes on regular tables.
E.Key-compressed indexes on IOT （including secondary indexes）

多项选择题WhenperformingincompleterecoveryusingUNTILSEQUENCEwithRMAN，whichtwopiecesofinformationarerequired？（）

A.Thread number.
B.Log Sequence number.
C.Control file sequence number.
D.Name of the last archived log.

单项选择题Whichbackgroundprocessreadstheredologbufferandwritesittoafile？（）

A.ARCn
B.DBWn
C.CKPT
D.LGWR
E.PMON
F.SMON

单项选择题You have performed the first step in placing your database into ARCHIVELOG mode. The second step is deciding whether the online redo log files are to be archived automatically or manually.  Which action should you take to enable archiving at instance startup？（）

A.A
B.B
C.C
D.D

单项选择题When performing an incomplete recovery of the whole database， what must be true about the data files that are restored？（）

A.A
B.B
C.C
D.D