单选题Which component of the SGA stores parsed SQL statements is used for process sharing?（）A Buffer cache B Redo log buffer C Private SQL area D Library cache E Row cache 

第1题：

Which is the correct description of a pinned buffer in the database buffer cache（）

• A、The buffer is currently being accessed.
• B、The buffer is empty and has not been used.
• C、The contents of the buffer have changed and must be flushed to the disk by the DBWn process. 
• D、The buffer is a candidate for immediate aging out and its contents are synchronized with the block contents on the disk.

第2题：

You configured the large pool for Oracle backup and restore operations. As a result， which component would require less memory？（）

• A、 streams pool
• B、 shared pool
• C、 log buffer
• D、 keep buffer cache
• E、 recycle buffer cache

第3题：

下面哪些等待事件表示空闲等待？（）

• A、SQL*Netmessage to client
• B、SQL*Netmessage from client
• C、library cache lock
• D、log file sync

第4题：

You are analyzing how Oracle processes user statements. SQL and PL/SQL parse information is stored in which of the following database memory areas? （）

• A、Library cache 
• B、Row cache
• C、Dictionary cache 
• D、Large area 
• E、Buffer cache

第5题：

The Log Writer （LGWR） process reads information from the （）and writes it to the online logs.

• A、large pool
• B、shared pool
• C、data buffer cache
• D、redo log buffer
• E、data dictionary cache

第6题：

You observe that database performance has degraded over a period of time. While investigating the reason， you find that the size of the database buffer cache is not large enough to cache all the needed data blocks.  Which advisory component would you refer to， in order to determine the required size of the database buffer cache？（） 

• A、Memory Advisor
• B、Segment Advisor
• C、SQL Tuning Advisor
• D、SQL Access Advisor
• E、Automatic Database Diagnostic Monitor （ADDM）

第7题：

Automatic Shared Memory Management （ASMM） has been enabled for your database instance.  Theinitialization parameters for the components that are managed by ASMM are not set. After observing theeffects of ASSM， you executed the following command： SQL> ALTER SYSTEM SET DB_CACHE_SIZE = 100M；  Which statement is true in this scenario（）

• A、The minimum memory size for the database buffer cache is set to 100 mb.
• B、The maximum memory size that can be obtained by the database buffer cache during ASMM is set to100 mb
• C、The minimum memory size allocated for a server process in the database buffer cache in dedicatedmode is set to 100 mb.
• D、The maximum memory size from the database buffer cache that can be released for dynamicdistribution during ASMM is set to 100 mb

第8题：

Which is the source used by Automatic SQL Tuning that runs as part of the AUTOTASK framework? （）

• A、SQL statements that are part of the AWR baseline only 
• B、SQL statements based on the AWR top SQL identification
• C、SQL statements that are part of the available SQL Tuning Set (STS) only 
• D、SQL statements that are available in the cursor cache and executed by a user other than SYS 

第9题：

Which is the source used by Automatic SQL Tuning that runs as part of the AUTOTASK framework？（）

• A、 SQL statements that are part of the AWR baseline only
• B、 SQL statements based on the AWR top SQL identification
• C、 SQL statements that are part of the available SQL Tuning Set （STS） only
• D、 SQL statements that are available in the cursor cache and executed by a user other than SYS

第10题：

You find that the database performance degrades while you backup the PROD database using Recovery Manager （RMAN）. The PROD database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation？（）

• A、Configure Java Pool to cache the java objects.
• B、Configure Streams Pool to enable parallel processing.
• C、Increase Shared Pool size to cache more PL/SQL objects.
• D、Increase Database Buffer Cache size to increase cache hits.
• E、Configure Large Pool to be used by RMAN and shared server.
• F、Increase the total System Global Area （SGA） size to increase memory hits.