單項選擇題

You notice that the performance of your production 24/7 Oracle database significantly degraded.Sometimes you are not able to connect to the instance because it hangs. You do not want to restart thedatabase instance.How can you detect the cause of the degraded performance?（）

A. Enable Memory Access Mode, which reads performance data from SGA.
B. Use emergency monitoring to fetch data directly from SGA analysis.
C. Run Automatic Database Diagnostic Monitor (ADDM) to fetch information from the latest Automatic Workload Repository (AWR) snapshots.
D. Use Active Session History (ASH) data and hang analysis in regular performance monitoring.
E. Run ADDM in diagnostic mode.

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多項選擇題

What are three purposes of the RMAN “FROM” clause?（）

A. to support PUSH-based active database duplication
B. to support synchronization of a standby database with the primary database in a Data environment
C. To support PULL-based active database duplication
D. To support file restores over the network in a Data Guard environment
E. To support file recovery over the network in a Data Guard environment

多項選擇題

Which three are true about the large pool for an Oracle database instance that supports shared serverconnections?（）

A. Allocates memory for RMAN backup and restore operations
B. Allocates memory for shared and private SQL areas
C. Contains a cursor area for storing runtime information about cursors
D. Contains stack space
E. Contains a hash area performing hash joins of tables

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You notice that the performance of your production 24/7 Oracle database significantly degraded.Sometimes you are not able to connect to the instance because it hangs. You do not want to restart thedatabase instance.How can you detect the cause of the degraded performance?（）

你可能感興趣的試題

What are three purposes of the RMAN “FROM” clause?（）

Which three are true about the large pool for an Oracle database instance that supports shared serverconnections?（）

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