ORACLE OCP 1z0-062【151-200】.pdf

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ORACLE OCP 1z0-062【151-200】

1. QUESTION NO: 151

Your multitenant container (CDB) contains two pluggable databases (PDB), HR_PDB and

ACCOUNTS_PDB, both of which use the CDB tablespace. The temp file is called temp01.tmp.

A user issues a query on a table on one of the PDBs and receives the following error:

ERROR at line 1:

ORA‐01565: error in identifying file ‘/u01/app/oracle/oradata/CDB1/temp01.tmp’

ORA‐27037: unable to obtain file status

Identify two ways to rectify the error. 分值1分

 A. Add a new temp file to the temporary tablespace and drop the temp file that that produced the error.

 B. Shut down the database instance, restore the temp01.tmp file from the backup, and then restart the database.

 C. Take the temporary tablespace offline, recover the missing temp file by applying redo logs, and then bring the tempo

rary tablespace online.

 D. Shutdown the database instance, restore and recover the temp file from the backup, and then open the database wit

h RESETLOGS.

 E. Shut down the database instance and then restart the CDB and PDBs.

正确答案:

答案解析：

Because temp files cannot be backed up and because no redo is ever generated for them,RMAN never restores or rec

overs temp files. RMAN does track the names of temp files, but only so that it can automatically re‐create them when n

eeded.

If you use RMAN in a Data Guard environment, then RMAN transparently converts primary control files to standby contr

ol files and vice versa. RMAN automatically updates file names for data files, online redo logs, standby redo logs, and t

emp files when you issue RESTORE and RECOVER.

2. QUESTION NO: 152

Examine the following commands for redefining a table with Virtual Private Database (VPD) policies:

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答题解析

A. Add a new temp file to the temporary tablespace and drop the temp file that that produced the error.┋E. Shut down t

he database instance and then restart the CDB and PDBs.







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Which two statements are true about redefining the table? 分值1分

 A. All the triggers for the table are disabled without changing any of the column names or column types in the table.

 B. The primary key constraint on the EMPLOYEES table is disabled during redefinition.

 C. VPD policies are copied from the original table to the new table during online redefinition.

 D. You must copy the VPD policies manually from the original table to the new table during online redefinition.

正确答案:

答案解析：

C (not D): CONS_VPD_AUTO

Used to indicate to copy VPD policies automatically

DBMS_RLS.ADD_POLICY

/ The DBMS_RLS package contains the fine‐grained access control administrative interface, which is used to implemen

t Virtual Private Database (VPD).DBMS_RLS is available with the Enterprise Edition only.

Note:

CONS_USE_PK and CONS_USE_ROWID are constants used as input to the "options_flag" parameter in both the STA

RT_REDEF_TABLE Procedure and CAN_REDEF_TABLE Procedure. CONS_USE_ROWID is used to indicate that the

redefinition should be done using rowids while CONS_USE_PK implies that the redefinition should be done using prima

ry keys or pseudo primary keys (which are unique keys with all component columns having NOT NULL constraints).

DBMS_REDEFINITION.START_REDEF_TABLE

To achieve online redefinition, incrementally maintainable local materialized views are used. These logs keep track of th

e changes to the master tables and are used by the materialized views during refresh synchronization.

START_REDEF_TABLE Procedure

Prior to calling this procedure, you must manually create an empty interim table (in the same schema as the table to be

redefined) with the desired attributes of the post redefinition table, and then call this procedure to initiate the redefinitio

3. QUESTION NO: 153

Which two statements are true about the use of the procedures listed in the v$sysaux_occupants.mov

e_procedure column? 分值1分

 A. The procedure may be used for some components to relocate component data to the SYSAUX tablespace from its c

urrent tablespace.

 B. The procedure may be used for some components to relocate component data from theSYSAUX tablespace to anot

her tablespace.

 C. All the components may be moved into SYSAUX tablespace.

 D. All the components may be moved from the SYSAUX tablespace.

正确答案:

B. The primary key constraint on the EMPLOYEES table is disabled during redefinition.┋C. VPD policies are copied fro

m the original table to the new table during online redefinition.

A. The procedure may be used for some components to relocate component data to the SYSAUX tablespace from its c

urrent tablespace.┋B. The procedure may be used for some components to relocate component data from theSYSAUX

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4. QUESTION NO: 154

Which statement is true about Oracle Net Listener? 分值1分

 A. It acts as the listening endpoint for the Oracle database instance for all local and non‐local user connections.

 B. A single listener can service only one database instance and multiple remote client connections.

 C. Service registration with the listener is performed by the process monitor (LREG) process of each database instanc

 D. The listener.ora configuration file must be configured with one or more listening protocol addresses to allow remote u

sers to connect to a database instance.

 E. The listener.ora configuration file must be located in the ORACLE_HOME/network/admin directly.

正确答案:

答案解析：

Explanation:https://docs.oracle.com/database/121/CNCPT/process.htm

5. QUESTION NO: 155

You are administering a database stored in Automatic Storage Management (ASM).

You use RMAN to back up the database and the MD_BACKUP command to back up the ASM metada

ta regularly. You lost an ASM disk group DG1 due to hardware failure.

In which three ways can you re‐create the lost disk group and restore the data? 分值1分

 A. Use the MD_RESTORE command to restore metadata for an existing disk group by passing the existing disk group

name as an input parameter and use RMAN to restore the data.

 B. Use the MKDG command to restore the disk group with the same configuration as the backed‐up disk group and dat

a on the disk group.

 C. Use the MD_RESTORE command to restore the disk group with the changed disk group specification, failure group

specification, name, and other attributes and use RMAN to restore the data.

 D. Use the MKDG command to restore the disk group with the same configuration as the backed‐up disk group name a

nd same set of disks and failure group configuration, and use RMAN to restore the data.

 E. Use the MD_RESTORE command to restore both the metadata and data for the failed disk group.

 F. Use the MKDG command to add a new disk group DG1 with the same or different specifications for failure group and

other attributes and use RMAN to restore the data.

正确答案:

答案解析：

AC (not E):

The md_restore command allows you to restore a disk group from the metadata created by the md_backup command.

md_restore can’t restore data, only metadata.

6. QUESTION NO: 156

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.

tablespace to another tablespace.

C. Service registration with the listener is performed by the process monitor (LREG) process of each database instanc

A. Use the MD_RESTORE command to restore metadata for an existing disk group by passing the existing disk group

name as an input parameter and use RMAN to restore the data.┋C. Use the MD_RESTORE command to restore the di

sk group with the changed disk group specification, failure group specification, name, and other attributes and use RMA

N to restore the data.┋F. Use the MKDG command to add a new disk group DG1 with the same or different specificatio

ns for failure group and other attributes and use RMAN to restore the data.

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