1z0-045 Exam

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Exam : Oracle 1Z0-045
Title : Oracle(r) Database 10g:New Features for Oracle8i ocps


1. You can use Oracle Flashback technology to look at past activity in your database.
What are two other characteristics of Oracle Flashback technology? (Choose two.)
A.Oracle Flashback technology uses undo information to construct consistent data.
B.You can use a PL/SQL cursor opened while using an Oracle Flashback image to perform DML once you deactivate the Flashback option in your session.
C.You can only use an Oracle Flashback view of the data if the required records are still in the online redo log files.
D.Oracle Flashback lists the DML that was executed during the period you identify when initiating your session.
Answer: AB

2. You have three temporary tablespace groups named G1, G2, and G3 in your database.
You are creating a new temporary tablespace as follows:
CREATE TEMPORARY TABLESPACE TEMP1 TEMPFILE '/u1/data/temp1.dbf' SIZE 10M TABLESPACE GROUP '';
Which statement regarding the above command is correct?
A.It will create the tablespace TEMP1 in group G1.
B.It will create the tablespace TEMP1 in group G3.
C.It will not add the tablespace TEMP1 to any group.
D.It will create the tablespace TEMP1 in the default group.
E.It will throw an error with message 'specified group is not available'.
F.It will create a new group with a system-generated name and add the tablespace TEMP1 to it.
Answer: C

3. After changing the PCTFREE value of the automatic space management table EMPLOYEES, which task can you perform in order for your change to take effect immediately?
B.Execute the command ANALYZE TABLE employees COMPUTE STATISTICS.
C.Execute the command DBMS_STATS.GATHER_TABLE_STATISTICS on the EMPLOYEES table.
D.Execute the DBMS_REPAIR.SEGMENT_FIX_STATUS procedure on the EMPLOYEES table.
Answer: D

4. Your Data Guard architecture consists of one primary database and one standby database, both located on the same machine. What is the minimum that you need in order to use the command-line interface of the Oracle 10g Data Guard Manager tool to monitor your Data Guard architecture?
A.only one Data Guard Monitor (DMON)
B.only the Oracle Management Server (OMS)
C.two Data Guard Monitors, one for each instance
D.one Data Guard Monitor and one Oracle Management Server
Answer: C

5. 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