單項選擇題

You have issued a SHUTDOWN ABORT command to bring down your database instance. Consider the stepsthat will be performed later when you open the database：
1. SGA is allocated.
2. Control file is read.
3. Redo log files are read.
4. Instance recovery is started.
5. Background processes are started.
6. Data files are checked for consistency.
7. Server parameter file or the initialization parameter file is read.
Which option has the correct order in which these steps occur（）

A.7， 1， 5， 2， 3， 6， 4
B.1， 2， 3，7， 5， 6， 4
C.7， 1， 4， 5， 2， 3， 6
D.1， 7， 5， 4， 2， 3， 6

你可能感興趣的試題

The instance abnormally terminates because of a power outage.
Which statement is true about redo log filesduring instance recovery（）

A.Inactive and current redo log files are required to accomplish recovery.
B.Online and archived redo log files are required to accomplish instance recovery.
C.All redo log entries after the last checkpoint are applied from redo log files to data files.
D.All redo log entries recorded in the current redo log file until the checkpoint position are applied to data files

單項選擇題

Examine the command：
SQL> DBMS_STATS.SET_TABLE_PREFS（’SH’， ’CUSTOMERS’， ’PUBLISH’， ’false’）；
Which statementdescribes the effect of the above command（）

A.Automatic statistics collection is stopped for the CUSTOMERS table.
B.Statistics for the CUSTOMERS table are locked and cannot be overwritten.
C.Existing statistics for the CUSTOMERS table become unusable for the query optimizer.
D.Subsequently， statistics gathered on the CUSTOMERS table are stored as pending statistics

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你可能感興趣的試題

The instance abnormally terminates because of a power outage. Which statement is true about redo log filesduring instance recovery（）

Examine the command： SQL> DBMS_STATS.SET_TABLE_PREFS（’SH’， ’CUSTOMERS’， ’PUBLISH’， ’false’）； Which statementdescribes the effect of the above command（）

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The instance abnormally terminates because of a power outage.
Which statement is true about redo log filesduring instance recovery（）

Examine the command：
SQL> DBMS_STATS.SET_TABLE_PREFS（’SH’， ’CUSTOMERS’， ’PUBLISH’， ’false’）；
Which statementdescribes the effect of the above command（）