单项选择题
The database instance has the following parameter setting：
OS_AUTHENT_PREFIX = OPS$ OS_ROLES = FALSE REMOTE_OS_AUTHENT = FALSE
REMOTE_OS_ROLES = FALSE TIMED_OS_STATISTICS = 0 You have a local operating system user SKD.You create a database user OPS$SKD， and then assign external authentication. The user OPS$SKD has theCREATE SESSION privilege.
What would you achieve by the above process（）
A.The database user OPS$SKD will be able to administer the database.
B.The authentication detail for the database user OPS$SKD is recorded in the password file.
C.The local operating system user SKD will be able to access the database instance without specifying theusername and password.
D.The database user OPS$SKD has to login with the password of the local operating system user SKD toaccess the database instance.
相关考题
-
单项选择题
WhydoesperformancedegradewhenmanyUPDATE，INSERT，orDELETEstatementsareissuedonatablethathasanassociatedBitmapindex（）
A.The DML operations re-create the Bitmap index blocks.
B.The Bitmap index is rebuilt automatically after a DML operation.
C.The smallest amount of a bitmap that can be locked is a bitmap segment.
D.Additional time is taken to remove NULL values from the Bitmap index after a DML operation. -
单项选择题
View the Exhibit to examine the output of the DBA_OUTSTANDING_ALERTS view. After 30 minutes, youexecuted the following command: SQL> SELECT reason,metric_value FROM dba_outstanding_alerts; REASON METRIC_VALUE------------------------------ ---------------------- Tablespace [TEST] is [28 perce 28.125 nt] fullWhat could be the reason for the elimination of the other rows in the output（）
A.An Automatic Workload Repository snapshot has been taken recently.
B.The non-threshold-based alerts are transferred to DBA_ALERT_HISTORY.
C.The threshold alerts conditions are cleared and the alerts are transferred to DBA_ALERT_HISTORY.
D.The threshold alerts related to database metrics are permanently stored in DBA_ALERT_HISTORY but notthe threshold alerts related to instance metrics -
多项选择题
Whichstatementsaretrueregardingatablespace（）
A.It can span multiple databases.
B.It can consist of multiple data files.
C.It can contain blocks of different sizes.
D.It can contain segments of different sizes.
E.It can contain a part of a nonpartitioned segment
