多項(xiàng)選擇題

Your database is running in NOARCHIVELOG mode. You want to put the database in ARCHIVELOG mode. Which two statements regarding archive log destinations are true？（）

A.The destination must be global only.
B.A maximum of five destinations can be assigned.
C.A maximum of ten different destinations can be assigned.
D.All the destinations are determined by the server automatically.
E.The destination may be local or remote for a Standby Database.
F.The destination can be changed by setting the LOG_ARCHIVE_FORMAT initialization parameter.

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多項(xiàng)選擇題

You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）

A.guarantee undo retention
B.add one more redo log group
C.size the redo log files appropriately
D.size the UNDO tablespace appropriately
E.size the SYSTEM tablespace appropriately
F.configure an appropriate undo retention interval
G.change automatic undo management to manual

單項(xiàng)選擇題

You specified extent management as local for a tablespace. How will it affect space management in the tablespace？（）

A.All the extents will be of the same size.
B.Bitmap will be used to record free and allocated extents.
C.Free extents will be managed by the data dictionary tables.
D.The tablespace will be system managed and the users cannot specify the extent size.

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Your database is running in NOARCHIVELOG mode. You want to put the database in ARCHIVELOG mode. Which two statements regarding archive log destinations are true？（）

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You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）

You specified extent management as local for a tablespace. How will it affect space management in the tablespace？（）

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Your database is running in NOARCHIVELOG mode. You want to put the database in ARCHIVELOG mode. Which two statements regarding archive log destinations are true？（）

You started a long transaction. Before committing， you executed a query on one of the tables currently being modified. You received the following error： ORA-01555： snapshot too old How would you prevent such an error in the future？（）