1z0-062

1z0-062 practice questions, page 9 of 16, with answer review and explanations.

Question 41

What are two benefits of installing Grid Infrastructure software for a stand-alone server before installing and creating an Oracle database?

  1. Effectively implements role separation
  2. Enables you to take advantage of Oracle Managed Files.
  3. Automatically registers the database with Oracle Restart.
  4. Helps you to easily upgrade the database from a prior release.
  5. Enables the Installation of Grid Infrastructure files on block or raw devices.

Question 42

Identify two correct statements about multitenant architectures.

  1. Multitenant architecture can be deployed only in a Real Application Clusters (RAC) configuration.
  2. Multiple pluggable databases (PDBs) share certain multitenant container database (CDB) resources.
  3. Multiple CDBs share certain PDB resources.
  4. Multiple non-RAC CDB instances can mount the same PDB as long as they are on the same server.
  5. Patches are always applied at the CDB level.
  6. A PDB can have a private undo tablespace.

Question 43

You upgrade your Oracle database in a multiprocessor environment. As a recommended you execute the following script: SQL > @utlrp.sql - Which two actions does the script perform? (Choose two.)

  1. Parallel compilation of only the stored PL/SQL code
  2. Sequential recompilation of only the stored PL/SQL code
  3. Parallel recompilation of any stored PL/SQL code
  4. Sequential recompilation of any stored PL/SQL code
  5. Parallel recompilation of Java code
  6. Sequential recompilation of Java code

Question 44

Which two statements are true concerning dropping a pluggable database (PDB)? (Choose two.)

  1. The PDB must be open in read-only mode.
  2. The PDB must be in mount state.
  3. The PDB must be unplugged.
  4. The PDB data files are always removed from disk.
  5. A dropped PDB can never be plugged back into a multitenant container database (CDB).

Question 45

You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed. Identify three possible reasons for this.

  1. Missing or stale histogram statistics
  2. Undersized shared pool
  3. High clustering factor for the indexes
  4. High value for the DB_FILE_MULTIBLOCK_READ_COUNT parameter
  5. Oversized buffer cache