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Which three statements are true concerning the multitenant architecture?
A. Each pluggable database (PDB) has its own set of background processes.
B. A PDB can have a private temp tablespace.
C. PDBs can share the sysaux tablespace.
D. Log switches occur only at the multitenant container database (CDB) level.
E. Different PDBs can have different default block sizes.
F. PDBs share a common system tablespace.
G. Instance recovery is always performed at the CDB level.
* A PDB would have its SYSTEM, SYSAUX, TEMP tablespaces.It can also contains other user created tablespaces in it.
* There is one default temporary tablespace for the entire CDB. However, you can create additional temporary tablespaces in individual PDBs.
* There is a single redo log and a single control file for an entire CDB
* A log switch is the point at which the database stops writing to one redo log file and begins writing to another. Normally, a log switch occurs when the current redo log file is completely filled and writing must continue to the next redo log file.
G: instance recovery
The automatic application of redo log records to uncommitted data blocks when an database instance is restarted after a failure.
* There is one set of background processes shared by the root and all PDBs.
* High consolidation density. The many pluggable databases in a single container database share its memory and background processes, letting you operate many more pluggable databases on a particular platform than you can single databases that use the old architecture.
Not C: There is a separate SYSAUX tablespace for the root and for each PDB.
Not F: There is a separate SYSTEM tablespace for the root and for each PDB.
You notice that the elapsed time for an important database scheduler Job is unacceptably long.
The job belongs to a scheduler job class and window.
Which two actions would reduce the job’s elapsed time?
A. Increasing the priority of the job class to which the job belongs
B. Increasing the job’s relative priority within the Job class to which it belongs
C. Increasing the resource allocation for the consumer group mapped to the scheduler job’s job class within
the plan mapped to the scheduler window
D. Moving the job to an existing higher priority scheduler window with the same schedule and duration
E. Increasing the value of the JOB_QUEUE_PROCESSES parameter
F. Increasing the priority of the scheduler window to which the job belongs
B:Job priorities are used only to prioritize among jobs in thesame class.
Note:Group jobs for prioritization
Within the same job class, you can assign priority values of 1-5 to individual jobs so that if two jobs in the class are scheduled to start at the same time, the one with the higher priority takes precedence. This ensures that you do not have a less important job preventing the timely completion of a more important one.
C:Set resource allocation for member jobs
Job classes provide the link between the Database Resource Manager and the Scheduler, because each job class can specify a resource consumer group as an attribute. Member jobs then belong to the specified consumer group and are assigned resources according to settings in the current resource plan.
You plan to migrate your database from a File system to Automata Storage Management (ASM) on same platform.
Which two methods or commands would you use to accomplish this task?
A. RMAN CONVERT command
B. Data Pump Export and import
C. Conventional Export and Import
D. The BACKUP AS COPY DATABASE . . . command of RMAN
E. DBMS_FILE_TRANSFER with transportable tablespace
1. Get the list of all datafiles.
Note:RMAN Backup of ASM Storage
There is often a need to move the files from the file system to the ASM storage and vice versa. This may come in handy when one of the file systems is corrupted by some means and then the file may need to be moved to the other file system.
D:Migrating a Database into ASM
*To take advantage of Automatic Storage Management with an existing database you must migrate that database into ASM. This migration is performed using Recovery Manager (RMAN) even if you are not using RMAN for your primary backup and recovery strategy.
Back up your database files as copies to the ASM disk group.
BACKUP AS COPY INCREMENTAL LEVEL 0 DATABASE
FORMAT ‘+DISK’ TAG ‘ORA_ASM_MIGRATION’;
You run a script that completes successfully using SQL*Plus that performs these actions:
1. Creates a multitenant container database (CDB)
2. Plugs in three pluggable databases (PDBs)
3. Shuts down the CDB instance
4. Starts up the CDB instance using STARTUP OPEN READ WRITE
Which two statements are true about the outcome after running the script?
A. The seed will be in mount state.
B. The seed will be opened read-only.
C. The seed will be opened read/write.
D. The other PDBs will be in mount state.
E. The other PDBs will be opened read-only.
F. The PDBs will be opened read/write.
B: The seed is always read-only.
D:Pluggable databases can be started and stopped using SQL*Plus commands or the ALTER PLUGGABLE DATABASE command.
You execute the following piece of code with appropriate privileges:
A. Data is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.
B. Data is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.
C. Data is never redacted for the EMP_V.SAL column.
D. Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.
E. Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.
*DBMS_REDACT.FULL completely redacts the column data.
*DBMS_REDACT.NONE applies no redaction on the column data. Use this function for development testing purposes. LOB columns are not supported. *The DBMS_REDACT package provides an interface to Oracle Data Redaction, which enables you to mask (redact) data that is returned from queries issued by low-privileged users or an application.
*If you create a view chain (that is, a view based on another view), then the Data Redaction policy also applies throughout this view chain. The policies remain in effect all of the way up through this view chain, but if another policy is created for one of these views, then for the columns affected in the subsequent views, this new policy takes precedence.
Your database is open and the LISTENER listener running. You stopped the wrong listener LISTENER by issuing the following command:
1snrctl > STOP
What happens to the sessions that are presently connected to the database Instance?
A. They are able to perform only queries.
B. They are not affected and continue to function normally.
C. They are terminated and the active transactions are rolled back.
D. They are not allowed to perform any operations until the listener LISTENER is started.
Thelistener is used when the connection is established. The immediate impact of stopping the listener will be that no new session can be established from a remote host. Existing sessions are not compromised.
Which three statements are true about using flashback database in a multitenant container database (CDB)?
A. The root container can be flashed back without flashing back the pluggable databases (PDBs).
B. To enable flashback database, the CDB must be mounted.
C. Individual PDBs can be flashed back without flashing back the entire CDB.
D. The DB_FLASHBACK RETENTION_TARGET parameter must be set to enable flashback of the CDB.
E. A CDB can be flashed back specifying the desired target point in time or an SCN, but not a restore point.
C: *RMAN provides support for point-in-time recovery for one or more pluggable databases (PDBs). The process of performing recovery is similar to that of DBPITR. You use the RECOVER command to perform point-in-time recovery of one or more PDBs. However, to recover PDBs, you must connect to the root as a user with SYSDBA or SYSBACKUP privilege
D:DB_FLASHBACK_RETENTION_TARGET specifies the upper limit (in minutes) on how far back in time the database may be flashed back. How far back one can flashback a database depends on how much flashback data Oracle has kept in the flash recovery area.
Range of values0 to 231 – 1
You execute the following PL/SQL:
A. Fine-Grained Auditing (FGA) is enabled for the PRICE column in the PRODUCTS table for SELECT
statements only when a row with PRICE > 10000 is accessed.
B. FGA is enabled for the PRODUCTS.PRICE column and an audit record is written whenever a row with
PRICE > 10000 is accessed.
C. FGA is enabled for all DML operations by JIMon the PRODUCTS.PRICE column.
D. FGA is enabled for the PRICE column of the PRODUCTS table and the SQL statements is captured in
the FGA audit trial.
*The DBMS_FGA package provides fine-grained security functions.
This procedure creates an audit policy using the supplied predicate as the audit condition.
Not C: object_schema
The schema of the object to be audited. (If NULL, the current log-on user schema is assumed.)
You execute the following commands to audit database activities:
SQL > ALTER SYSTEM SET AUDIT_TRIAL=DB, EXTENDED SCOPE=SPFILE;
SQL > AUDIT SELECT TABLE, INSERT TABLE, DELETE TABLE BY JOHN By SESSION WHENEVER SUCCESSFUL;
Which statement is true about the audit record that generated when auditing after instance restarts?
A. One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command
on a table, and contains the SQL text for the SQL Statements.
B. One audit record is created for every successful execution of a SELECT, INSERT OR DELETE command,
and contains the execution plan for the SQL statements.
C. One audit record is created for the whole session if john successfully executes a SELECT, INSERT, or
DELETE command, and contains the execution plan for the SQL statements.
D. One audit record is created for the whole session if JOHN successfully executes a select command, and
contains the SQL text and bind variables used.
E. One audit record is created for the whole session if john successfully executes a SELECT, INSERT, or
DELETE command on a table, and contains the execution plan, SQL text, and bind variables used.
In earlier releases, BY SESSION caused the database to write a single record for all SQL statements or operations of the same type executed on the same schema objects in the same session. Beginning with this release(11g)of Oracle Database, both BY SESSION and BY ACCESS cause Oracle Database to write one audit record for each audited statement and operation.
Specify BY ACCESS if you want Oracle Database to write one record for each audited statement and operation.
If you specify either a SQL statement shortcut or a system privilege that audits a data definition language (DDL) statement, then the database always audits by access. In all other cases, the database honors the BY SESSION or BY ACCESS specification.
*For each audited operation, Oracle Database produces an audit record containing this information:
/The user performing the operation
/The type of operation
/The object involved in the operation
/The date and time of the operation
You support Oracle Database 12c Oracle Database 11g, and Oracle Database log on the same server.
All databases of all versions use Automatic Storage Management (ASM).
Which three statements are true about the ASM disk group compatibility attributes that are set for a disk group?
A. The ASM compatibility attribute controls the format of the disk group metadata.
B. RDBMS compatibility together with the database version determines whether a database Instance can
mount the ASM disk group.
C. The RDBMS compatibility setting allows only databases set to the same version as the compatibility value,
to mount the ASM disk group.
D. The ASM compatibility attribute determines some of the ASM features that may be used by the Oracle
E. The ADVM compatibility attribute determines the ACFS features that may be used by the Oracle 10g database.
AD:The value for the disk group COMPATIBLE.ASM attribute determines the minimum software version for an Oracle ASM instance that can use the disk group.This setting also affects the format of the data structures for the Oracle ASM metadata on the disk.
B:The value for the disk group COMPATIBLE.RDBMS attribute determines the minimum COMPATIBLE database initialization parameter setting for any database instance that is allowed to use the disk group. Before advancing the COMPATIBLE.RDBMS attribute, ensure that the values for the COMPATIBLE initialization parameter for all of the databases that access the disk group are set to at least the value of the new setting for COMPATIBLE.RDBMS.
For example, if the COMPATIBLE initialization parameters of the databases are set to either 11.1 or 11.2, then COMPATIBLE.RDBMS can be set to any value between 10.1 and 11.1 inclusively.
/The value for the disk group COMPATIBLE.ADVM attribute determines whether the disk group can contain Oracle ASM volumes. The value must be set to 11.2 or higher. Before setting this attribute, the COMPATIBLE.ASM value must be 11.2 or higher. Also, the Oracle ADVM volume drivers must be loaded in the supported environment.
/You can create an Oracle ASM Dynamic Volume Manager (Oracle ADVM) volume in a disk group. The volume device associated with the dynamic volume can then be used to host an Oracle ACFS file system.
The compatibility parameters COMPATIBLE.ASM and COMPATIBLE.ADVM must be set to 11.2 or higher for the disk group.
* The disk group attributes that determine compatibility are COMPATIBLE.ASM, COMPATIBLE.RDBMS. and COMPATIBLE.ADVM. The COMPATIBLE.ASM and COMPATIBLE.RDBMS attribute settings determine the minimum Oracle Database software version numbers that a system can use for Oracle ASM and the database instance types respectively. For example, if the Oracle ASM compatibility setting is 11.2, and RDBMS compatibility is set to 11.1, then the Oracle ASM software version must be at least 11.2, and the Oracle Database client software version must be at least 11.1. The COMPATIBLE.ADVM attribute determines whether the Oracle ASM Dynamic Volume Manager feature can create an volume in a disk group.
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