15. You are in the process of creating a virtual private catalog in your Oracle Database 11g dcatabase.

11g 建立vpc

The PROD1, PROD2, and PROD3 Oracle Database 10g databases are registered in the base recovery catalog.

P1,P2,P3 10g已經註冊在base catalog。

The database user who owns the base recovery catalog is CATOWNER. CATOWNER executes the following command to grant privileges to a new user VPC1 using Oracle Database 11g RMAN executables:

base owner CATOWNER ,賦權給vpc1.

RMAN> GRANT CATALOG FOR DATABASE prod1, prod2 TO vpc1;

Then you issue the following commands:

RMAN> CONNECT CATALOG vpc1/[email protected];

RMAN> SQL "EXEC catowner.dbms_rcvcat.create_virtual_catalog;" What is the outcome of the above commands?

執行命令EXEC catowner.dbms_rcvcat.create_virtual_catalog

A. They execute and create a virtual catalog for pre-Oracle 11g clients.

B. They produce an error because PROD1 and PROD2 databases belong to the older version.

C. They produce an error because you need to connect as CATOWNER to execute this packaged procedure.

D. They produce an error because you need to connect to the target database to execute this packaged procedure.

知識點：

•     A base recovery catalog is a database schema that contains RMAN metadata for a set of target databases.
  base 是一個schema 存放rman
      A virtual private catalog is a set of synonyms and views that enable user access to a subset of a base recovery catalog.
  vpc是同義詞和檢視 允許使用者訪問base

BASE：
GRANT recovery_catalog_owner TO catowner;
CONNECT CATALOG [email protected]
CREATE CATALOG;
REGISTER DATABASE;

VP：

GRANT recovery_catalog_owner TO vpc1;
CONNECT CATALOG [email protected]
GRANT CATALOG FOR DATABASE prod1 TO vpc1;
CONNECT CATALOG [email protected]
CREATE VIRTUAL CATALOG;
CONNECT [email protected]
BEGIN
catowner.DBMS_RCVCAT.CREATE_VIRTUAL_CATALOG;
END;
 /

答案：A