A. All AWR tables belong to the SYSTEM schema.
B. The AWR data is stored in memory and in the database.
C. The snapshots collected by AWR are used by the self-tuning components in the database
D. AWR computes time model statistics based on time usage for activities, which are displayed in the v$SYS time model and V$SESS_TIME_MODEL views.
E. AWR contains system wide tracing and logging information.
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You notice a performance change in your production Oracle 12c database. You want to know which change caused this performance difference.
Which method or feature should you use?（）
A. Compare Period ADDM report
B. AWR Compare Period report
C. Active Session History (ASH) report
D. Taking a new snapshot and comparing it with a preserved snapshot
A. Bind Variable Peeking
B. SQL Plan Baselines
C. Adaptive Cursor Sharing
D. Bind variable used in a SQL statement
E. Literals in a SQL statement
You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed.
Identify three possible reasons for this.（）
A. Missing or stale histogram statistics
B. Undersized shared pool
C. High clustering factor for the indexes
D. High value for the DB_FILE_MULTIBLOCK_READ_COUNT parameter
E. Oversized buffer cache
A. The PDB must be open in read-only mode.
B. The PDB must be in mount state.
C. The PDB must be unplugged.
D. The PDB data files are always removed from disk.
E. A dropped PDB can never be plugged back into a multitenant container database (CDB).
A. Parallel compilation of only the stored PL/SQL code
B. Sequential recompilation of only the stored PL/SQL code
C. Parallel recompilation of any stored PL/SQL code
D. Sequential recompilation of any stored PL/SQL code
E. Parallel recompilation of Java code
F. Sequential recompilation of Java code
A. Multitenant architecture can be deployed only in a Real Application Clusters (RAC) configuration.
B. Multiple pluggable databases (PDBs) share certain multitenant container database (CDB) resources.
C. Multiple CDBs share certain PDB resources.
D. Multiple non-RAC CDB instances can mount the same PDB as long as they are on the same server.
E. Patches are always applied at the CDB level.
F. A PDB can have a private undo tablespace.
A. Effectively implements role separation
B. Enables you to take advantage of Oracle Managed Files.
C. Automatically registers the database with Oracle Restart.
D. Helps you to easily upgrade the database from a prior release.
E. Enables the Installation of Grid Infrastructure files on block or raw devices.
To implement Automatic Management (AMM), you set the following parameters: When you try to start the database instance with these parameter settings, you receive the following error message:
SQL > startup
ORA-00824: cannot set SGA_TARGET or MEMORY_TARGET due to existing internal settings, see alert log for more information.
Identify the reason the instance failed to start.（）
A.The PGA_AGGREGATE_TARGET parameter is set to zero.
B.The STATISTICS_LEVEL parameter is setto basic.
C.Both the SGA_TARGETandMEMORY_TARGET paramete rsareset.
D.The SGA_MAX_SIZEandSGA_TARGET parameter value sare note qual.
Your are the DBA supporting an Oracle 11g Release 2 database and wish to move a table containing several DATE, CHAR, VARCHAR2, and NUMBER data types, and the table’s indexes, to another tablespace.
The table does not have a primary key and is used by an OLTP application.
Which technique will move the table and indexes while maintaining the highest level of availability to the application?（）
A. Oracle Data Pump.
B. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD to move the indexes.
C. An ALTER TABLE MOVE to move the table and ALTER INDEX REBUILD ONLINE to move the indexes.
D. Online Table Redefinition.
E. Edition-Based Table Redefinition.
最新试题
Which three statements are true about the working of system privileges in a multitenant control database(CDB) that has pluggable databases (PDBs)?（）
You have altered a non-unique index to be invisible to determine if queries execute within an acceptable response time without using this index.Which two are possible if table updates are performed which affect the invisible index columns?（）
Examine the commands executed to monitor database operations:$> conn sys oracle/oracle@prod as sysdbaSQL > VAR eid NUMBERSQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (‘batch_job’ , FORCED_TRACKING => ‘Y’);Which two statements are true?（）
You are connected to a pluggable database (PDB) as a common user with DBA privileges.The STATISTICS_LEVEL parameter is PDB_MODIFIABLE. You execute the following:SQL > ALTER SYSTEM SET STATISTICS_LEVEL = ALL SID = ‘*’ SCOPE = SPFILE;Which is true about the result of this command?（）
Your multitenant container database (CDB) contains pluggable databases (PDBs), you are connected to the HR_PDB. You execute the following command:SQL > CREATE UNDO TABLESPACE undotb01 DATAFILE ‘u01/oracle/rddb1/undotbs01.dbf’ SIZE 60M AUTOEXTEND ON;What is the result?（）
Examine the query and its output executed In an RDBMS Instance:Which three statements are true about the users (other than sys) in the output?（）
In your multitenant container database (CDB) containing same pluggable databases (PDBs), you execute the following commands in the root container:Which two statements are true?（）
You want to flash back a test database by five hours.You issue this command:SQL > FLASHBACK DATABASE TO TIMESTAMP (SYSDATE - 5/24);Which two statements are true about this flashback scenario?（）
Which statement is true about Enterprise Manager (EM) express in Oracle Database 12c?（）
Which three statements are true about Oracle Data Pump export and import operations?（）