1z0-030 Exam

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Exam : Oracle 1Z0-030
Title : Orcacle9i DataBase:New Features for Administrators


1. Your database has tablespaces with different block sizes. What must you do to back these up with RMAN?
A. You need to issue a separate RMAN BACKUP command to group tablespaces with the same block size.
B. You need to use RMAN BACKUP BLOCKSIZE=nK to select tablespaces that are not the same size as the standard block size.
C. You can simply issue the RMAN BACKUP command, because a backup set can contain tablespaces of different block sizes.
D. You must allow for the fact that RMAN will generate several backupsets, one for each block size, when you issue the RMAN BACKUP command .
Answer: D

2. Consider this syntax: MERGE INTO t1 USING t2 ON (join predicate)?. What does the MERGE syntax do?
A. It performs a merge join of the row from T2 only if it doesn't exist in the T1 table.
B. It creates a natural join of tables T1 and T2 for all columns that have the same name.
C. It creates a Cartesian product of table T1 and table T2 for all columns that have the same name.
D. For each row from T2, it updates the row if it exists within table T1, otherwise it inserts the row into T1.
Answer: D

3. In what way are the two initialization parameters PGA_AGGREGATE_TARGET and WORKAREA_SIZE_POLICY related to each other?
A. The default value for PGA_AGGREGATE_TARGET depends on the setting of WORKAREA_SIZE_POLICY.
B. You must provide a nondefault value for PGA_AGGREGATE_TARGET before setting WORKAREA_SIZE_POLICY to the value AUTO.
C. The value of PGA_AGGREGATE_TARGET can only be changed dynamically (that is, when the instance is open) if the value of WORKAREA_SIZE_POLICY is set to AUTO.
D. You must provide a non-default value for PGA_AGGREGATE_TARGET before setting WORKAREA_SIZE_POLICY to the value MANUAL.
Answer: B

4. What is the benefit of the Cached Execution Plan feature?
A. SQL statement performance is improved.
B. The SQL statement no longer needs to be cached in the library cache.
C. Improved diagnosability, as the execution plan of a cached SQL statement in memory is preserved.
D. The execution plan is available for diagnosis after the SQL statement is aged out of the library cache.
Answer: C

5. What statement is true about taking a database default temporary tablespace offline?
A. You cannot take a default temporary tablespace offline.
B. The database must be quiesced before you perform this action.
C. You must ensure that all users are assigned to an alternative temporary tablespace first.
D. You must first ensure that the default temporary tablespace has the permanent tablespace characteristic.
Answer: A

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