1z1-084 無料問題集「Oracle Database 19c Performance and Tuning Management」

（A）3

（B）5

（C）1

（D）52

（A）It must always transports existing INMEMORY attributes.

（B）Its TRANSFORM clause can be used to add the INMEMORV clause to exported tables that lack them.

（C）It can generates the INMEMORY clause that matches the table settings at export time.

（D）It always gives preference to the IM column store clause defined at the tablespace level over table-level definitions.

（E）It ignores the IM column store clause of the exporting objects.

（F）Its INMEM0RY_CLAUSE of the Data Pump Export allows modifications to IM column store clause of a table with existing INMEMORY setting.

（A）ROW STORE COMPRESS ADVANCED

（B）COLUMN STORE COMPRESS FOR QUERY HIGH

（C）MN STORE COMPRESS FOR QUERY LOW

（D）STORE COMPRESS

（A）Increasing the size of MEMORYTARGET

（B）setting dbwr_io_slaves to 64

（C）increasing the value of DBWRITERPROCESSES to 64,

（D）reducing the values of DB_FILE_MULTILOCK_READ_COUNT to 64

（E）increasing the value of DB_FILE_MULTIBLOCK_READ_COUNT to 128

（A）SQL Transformation

（B）SQL Semantic Check

（C）SQL Adaptive Execution

（D）SQL Row Source Generation

（E）SQL Execution

（A）Parse Time Elapsed accounts for successful soft and hard parse operations only.

（B）Statspack cannot account for high CPU time when CPU TIME is a Top 10 event in DB time. When CPU time is high, SQL tuning may improve performance.

（C）DB Time accounts for all time used by background processes and user sessions.

（D）When WAIT TIME is high, instance tuning may improve performance.

（E）Systems in which CPU time is dominant need more tuning that those in which WAIT TIME is dominant.

（F）The proportion of WAIT TIME to CPU TIME always increases with increased system load.