Which of the following options describes Segment Shrink？（） Reclaims space above and below the high-water mark without using additional space。 Moves rows to a new physical location，resetting the high-water mark，but uses additional space during the operation。 Deallocates space above the high-water mark that is currently not in use。 None of the above。
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Attaching to a NAS storage system through redundant NICs will provide which of the following？（） High availability and failover。 File sharing on the storage system。 Better bandwidth through NIC Teaming on attached servers。 Greater number of LUNS available on the same storage system。
Which two statements describe good practices for an application developer to reduce lockingconflicts in Oracle database（） Avoid coding unnecessary long-running transactions.。 Allow the database to handle locks in default locking mode.。 Always explicitly code the locks as per the requirement of the application.。 Allow escalation of row locks to block locks if too many row locks cause problem.。
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Which syntax turns an existing constraint on? （）
