CMS专题

单选题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 abo

题目
单选题
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?（）
A

The STATISTICS_LEVEL parameter is set to all whenever this PDB is re-opened.

B

The STATISTICS_LEVEL parameter is set to ALL whenever any PDB is reopened.

C

The STATISTICS_LEVEL parameter is set to all whenever the multitenant container database (CDB) is restarted.

D

Nothing happens; because there is no SPFILE for each PDB, the statement is ignored.

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相似问题和答案

第1题：

You are connected using SQL* Plus to a multitenant container database (CDB) with SYSDBA privilegesand execute the following sequence statements:What is the result of the last SET CONTAINER statement and why is it so?（）

A. It succeeds because the PDB_ADMIN user has the required privileges.

B. It fails because common users are unable to use the SET CONTAINER statement.

C. It fails because local users are unable to use the SET CONTAINER statement.

D. If fails because the SET CONTAINER statement cannot be used with PDB$SEED as the target pluggable database (PDB).


参考答案：A

第2题：

Your multitenant container database (CDB) contains a pluggable database, HR_PDB. The default permanent tablespace in HR_PDB is USERDATA. The container database (CDB) is open and you connect RMAN.You want to issue the following RMAN command:RMAN > BACKUP TABLESPACE hr_pdb:userdata;Which task should you perform before issuing the command?（）

A. Place the root container in ARHCHIVELOG mode.

B. Take the user data tablespace offline.

C. Place the root container in the nomount stage.

D. Ensure that HR_PDB is open.


参考答案：D

第3题：

Your multitenant container database has three pluggable databases (PDBs): PDB1, PDB2, and PDB3.Which two RMAN commands may be; used to back up only the PDB1 pluggable database?()

A. BACKUP PLUGGABLE DATABASE PDB1 while connected to the root container

B. BACKUP PLUGGABLE DATABASE PDB1 while connected to the PDB1 container

C. BACKUP DATABASE while connected to the PDB1 container

D. BACKUP DATABASE while connected to the boot container

E. BACKUP PLUGGABLE database PDB1 while connected to PDB2


参考答案：A, C

第4题：

Your multitenant container database (CDB) is running in ARCHIVELOG mode. You connect to the CDB RMAN.Examine the following command and its output:You execute the following command:RMAN > BACKUP DATABASE PLUS ARCHIVELOG;Which data files will be backed up?（）

A. Data files that belong to only the root container

B. Data files that belong to the root container and all the pluggable databases (PDBs)

C. Data files that belong to only the root container and PDB$SEED

D. Data files that belong to the root container and all the PDBs excluding PDB$SEED


参考答案：B

第5题：

You create a new pluggable database, HR_PDB, from the seed database. Which three tablespaces arecreated by default in HR_PDB?()

A.SYSTEM

B.SYSAUX

C.EXAMPLE

D.UNDO

E.TEMP

F.USERS


参考答案：A, B, E

第6题：

In your multitenant container database (CDB) with two pluggable database (PDBs). You want to create a new PDB by using SQL Developer.Which statement is true?()

A. The CDB must be open.

B. The CDB must be in the mount stage.

C. The CDB must be in the nomount stage.

D. Alt existing PDBs must be closed.


参考答案：A

第7题：

Which two statements are true concerning the Resource Manager plans for individual pluggabledatabases (PDB plans) in a multitenant container database (CDB)?()

A. If no PDB plan is enabled for a pluggable database, then all sessions for that PDB are treated to an equal degree of the resource share of that pdb.

B. In a PDB plan, subplans may be used with up to eight consumer groups.

C. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups across all PDBs in the cdb.

D. If no PDB plan is enabled for a pluggable database, then the PDB share in the CDB plan is dynamically calculated.

E. If a PDB plan is enabled for a pluggable database, then resources are allocated to consumer groups based on the shares provided to the PDB in the CDB plan and the shares provided to the consumer groups in the PDB plan.


参考答案：A, B, C, D, E

第8题：

Which three statements are true about the working of system privileges in a multitenant control database(CDB) that has pluggable databases (PDBs)?()

A. System privileges apply only to the PDB in which they are used.

B. Local users cannot use local system privileges on the schema of a common user.

C. The granter of system privileges must possess the set container privilege.

D. Common users connected to a PDB can exercise privileges across other PDBs.

E. System privileges with the with grant option container all clause must be granted to a common user before the common user can grant privileges to other users.


参考答案：A, C, E

第9题：

Which statement is true concerning dropping a pluggable database (PDB)?()

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).


参考答案：B

第10题：

Your multitenant container database, CDB1, is running in ARCHIVELOG mode and has two pluggable databases, HR_PDB and ACCOUNTS_PDB. An RMAN backup exists for the database.You issue the command to open ACCOUNTS_PDB and find that the USERDATA.DBF data file for the default permanent tablespace USERDATA belonging to ACCOUNTS_PDB is corrupted.What should you do before executing the commands to restore and recover the data file in ACCOUNTS_PDB?（）

A. Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDb.

B. Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE IMMEDIATE command.

C. Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.

D. Take the USERDATA tablespace offline in ACCOUNTS_PDb.


参考答案：D

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