A.Memory is allocated for the SG1

B.The consistency of the database is checked.

C.SYS can access the database.

D.All required background processes are started.

E.The control files are opened.

A.Multiple row pieces from the same row may be stored in different database blocks

B.Data block headers contain their own Data Block Address (DBA)

C.Data block free space is always contiguous in the middle of the block

D.Index block free space is always contiguous in the middle of the block

E.Multiple row pieces from the same row may be stored in the same block

F.A table row piece can be chained across several database blocks

A.ROW STORE COMPRESS ADVANCED

B.COLUMN STORE COMPRESS FOR ARCHIVE LOW

C.ROW STORE COMPRESS BASIC

D.COLUMN STORE COMPRESS FOR QUERY LOW

E.COLUMN STORE COMPRESS FOR ARCHIVE HIGH

A.It ignores NULLs

B.It processes NULLs in the selected columns

C.INTERSECT is of lower precedence than UNION or UNION ALL

D.Multiple INTERSECT operators are not possible in the same SQL statement

A.The generation of UNDO generates REDO

B.The generation of REDO generates UNDO

C.DML modifies Oracle database objects and only generates UNDO

D.DML modifies Oracle database objects and only generates REDO