READ Free Dumps For Oracle- 1z0-062
| Question ID 21727 | Identify three valid options for adding a pluggable database (PDB) to an existing multitenant container database (CDB).
|
| Option A | Use the CREATE PLUGGABLE DATABASE statement to create a PDB using the files from the SEED.
|
| Option B | Use the CREATE DATABASE . . . ENABLE PLUGGABLE DATABASE statement to provision a PDB by copying file from the SEED.
|
| Option C | Use the DBMS_PDB package to clone an existing PDB.
|
| Option D | Use the DBMS_PDB package to plug an Oracle 12c non-CDB database into an existing CDB.
|
| Option E | Use the DBMS_PDB package to plug an Oracle 11 g Release 2 (11.2.0.3.0) non-CDB database into an existing CDB.
|
| Correct Answer | A,C,D |
Explanation Explanation: Use the CREATE PLUGGABLE DATABASE statement to create a pluggable database (PDB). This statement enables you to perform the following tasks: * (A) Create a PDB by using the seed as a template Use the create_pdb_from_seed clause to create a PDB by using the seed in the multitenant container database (CDB) as a template. The files associated with the seed are copied to a new location and the copied files are then associated with the new PDB. * (C) Create a PDB by cloning an existing PDB Use the create_pdb_clone clause to create a PDB by copying an existing PDB (the source PDB) and then plugging the copy into the CDB. The files associated with the source PDB are copied to a new location and the copied files are associated with the new PDB. This operation is called cloning a PDB. The source PDB can be plugged in or unplugged. If plugged in, then the source PDB can be in the same CDB or in a remote CDB. If the source PDB is in a remote CDB, then a database link is used to connect to the remote CDB and copy the files. * Create a PDB by plugging an unplugged PDB or a non-CDB into a CDB Use the create_pdb_from_xml clause to plug an unplugged PDB or a non-CDB into a CDB, using an XML metadata file.
| Question ID 21728 | Your database supports a DSS workload that involves the execution of complex queries:
Currently, the library cache contains the ideal workload for analysis. You want to analyze some of the queries for an application that are cached in the library cache.
What must you do to receive recommendations about the efficient use of indexes and materialized views to improve query performance?
|
| Option A | Create a SQL Tuning Set (STS) that contains the queries cached in the library cache and run the SQL Tuning Advisor (STA) on the workload captured in the STS.
|
| Option B | Run the Automatic Workload Repository Monitor (ADDM).
|
| Option C | Create an STS that contains the queries cached in the library cache and run the SQL Performance Analyzer (SPA) on the workload captured in the STS.
|
| Option D | Create an STS that contains the queries cached in the library cache and run the SQL Access Advisor on the workload captured in the STS.
|
| Correct Answer | D |
Explanation Explanation: * SQL Access Advisor is primarily responsible for making schema modification recommendations, such as adding or dropping indexes and materialized views. SQL Tuning Advisor makes other types of recommendations, such as creating SQL profiles and restructuring SQL statements. * The query optimizer can also help you tune SQL statements. By using SQL Tuning Advisor and SQL Access Advisor, you can invoke the query optimizer in advisory mode to examine a SQL statement or set of statements and determine how to improve their efficiency. SQL Tuning Advisor and SQL Access Advisor can make various recommendations, such as creating SQL profiles, restructuring SQL statements, creating additional indexes or materialized views, and refreshing optimizer statistics. Note: * Decision support system (DSS) workload * The library cache is a shared pool memory structure that stores executable SQL and PL/SQL code. This cache contains the shared SQL and PL/SQL areas and control structures such as locks and library cache handles. Reference: Tuning SQL Statements