You are managing an ASM instance. You previously issued the following statements: ALTER DISKGROUP dg1 DROP DISK disk2; ALTER DISKGROUP dg1 DROP DISK disk3; ALTER DISKGROUP dg1 DROP DISK disk5; You want to cancel the disk drops that are pending for the DG1 disk group. Which statement should you issue?（） ALTER DISKGROUP dg1 UNDROP disk2, disk3, disk5;。 ALTER DISKGROUP dg1 UNDROP;。 ALTER DISKGROUP dg1 UNDROP DISKS;。 You cannot cancel the pending disk drops.。
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What type of network connection is recommended for HMC and POWER6 Service Processorcommunication？（） Open。 Public。 Private。 Virtual。
Which two statements are true regarding the ORDER BY clause? （） It is executed first in the query execution 。 It must be the last clause in the SELECT statement 。 It cannot be used in a SELECT statement containing a HAVING clause。 You cannot specify a column name followed by an expression in this clause 。 You can specify a combination of numeric positions and column names in this clause。
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In Oracle 11g，by default which one of the following conditions implicitly enables Automatic PGA Memory Management？（）
