单项选择题
Which statement is true regarding checkpoints and recovery？（）
A.A checkpoint defines the highest system change number （SCN）.
B.All redo entries higher or at the SCN are known to be written to the data files.
C.Only the redo records containing SCNs higher then the checkpoint need to be applied during recovery.
D.The LOG_CHECKPOINT_INTERVAL initialization parameter specifies the amount of time between incremental checkpoints.
相关考题
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单项选择题
Inuser-managedbackupandrecoverprocedures，howaredatafilesbackedup？（）
A.Using SQL commands.
B.Using SQL*Plus commands.
C.Using operating system commands.
D.Using Recover Manager commands. -
单项选择题
ToincreasetheavailabilityofanAdvancedReplicationenvironment，youcanaddanewmastertoareplicationgroupwithoutquiescingthegroup.Thisisachieved（）.
A.Only when the new master site already has existing replication groups.
B.By issuing a single command to create, populate, and activate the new master.
C.When the master definition site is not the same for all of the master groups.
D.Without impacting end users who are executing data manipulation language (DML) commands on the replicated tables. -
多项选择题
WhichfouraretrueregardingtheWorkspaceManagerinOracle9i？（）
A.Automatically versions all tables.
B.Automatically installed with Oracle9i.
C.Merges changes with parent rows or discard changes.
D.Provides mechanism to identify and resolve conflicts.
E.Allows for version enabling tables by use of a packages procedure.
