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Which two statements are true about the use of the procedures listed in the v$sysaux_occupants.move_procedure column?
A. The procedure may be used for some components to relocate component data to the SYSAUX tablespace
from its current tablespace.
B. The procedure may be used for some components to relocate component data from the SYSAUX tablespace
to another tablespace.
C. All the components may be moved into SYSAUX tablespace.
D. All the components may be moved from the SYSAUX tablespace.
V$SYSAUX_OCCUPANTS displays SYSAUX tablespace occupant information. MOVE_PROCEDURE:Name of the move procedure; null if not applicable
For example, the tables and indexes that were previously owned by the system user can now be specified for a SYSAUX tablespace. You can query the v$sysaux_occupants view to find the exact components stored within the SYSAUX tablespace.
Which statement is true about Oracle Net Listener?
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 (PMON) process of each database
D. The listener.ora configuration file must be configured with one or more listening protocol addresses to allow
remote users to connect to a database instance.
E. The listener.ora configuration file must be located in the ORACLE_HOME/network/admin directly.
Supported services, that is, the services to which the listener forwards client requests, can be configured in the listener.ora file or this information can be dynamically registered with the listener. This dynamic registration feature is called service registration. The registration is performed by the PMON process–an instance background process–of each database instance that has the necessary configuration in the database initialization parameter file. Dynamic service registration does not require any configuration in the listener.ora file.
Not B:Service registration reduces the need for the SID_LIST_listener_name parameter setting, which specifies information about the databases served by the listener, in the listener.ora file.
*Oracle Net Listener is a separate process that runs on the database server computer. It receives incoming client connection requests and manages the traffic of these requests to the database server.
*A remote listener is a listener residing on one computer that redirects connections to a database instance on another computer. Remote listeners are typically used in an Oracle Real Application Clusters (Oracle RAC) environment. You can configure registration to remote listeners, such as in the case of Oracle RAC, for dedicated server or shared server environments.
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 metadata 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?
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 data 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 and 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.
*The md_restore command allows you to restore a disk group from the metadata created by the md_backup command.
This command restores a disk group backup using various options that are described in this section.
/In the restore mode md_restore, it re-create the disk group based on the backup file with all user- defined templates with the exact configuration as the backuped disk group. There are several options when restore the disk group
full – re-create the disk group with the exact configuration nodg – Restores metadata in an existing disk group provided as an input parameter newdg – Change the configuration like failure group, disk group name, etc..
*The MD_BACKUP command creates a backup file containing metadata for one or more disk groups. By default all the mounted disk groups are included in the backup file which is saved in the current working directory. If the name of the backup file is not specified, ASM names the file AMBR_BACKUP_INTERMEDIATE_FILE.
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.
You issue the command to open ACCOUNTS_PDB and find that the USERDATA.DBF data file for the default permanent tablespace USERDATA belonging to ACCOUNTS_PDB is corrupted.
What should you do before executing the commands to restore and recover the data file in ACCOUNTS_PDB?
A. Place CDB1 in the mount stage and then the USERDATA tablespace offline in ACCOUNTS_PDB.
B. Place CDB1 in the mount stage and issue the ALTER PLUGGABLE DATABASE accounts_pdb CLOSE
C. Issue the ALTER PLUGGABLE DATABASE accounts_pdb RESTRICTED command.
D. Take the USERDATA tablespace offlineinACCOUNTS_PDB.
*You can take an online tablespace offline so that it is temporarily unavailable for general use. The rest of the database remains open and available for users to access data. Conversely, you can bring an offline tablespace online to make the schema objects within the tablespace available to database users. The database must be open to alter the availability of a tablespace.
Which Oracle Database component is audited by default if the unified Auditing option is enabled?
A. Oracle Data Pump
B. Oracle Recovery Manager (RMAN)
C. Oracle Label Security
D. Oracle Database Vault
E. Oracle Real Application Security
Fine Grained Audit
Database Vault(not D)
Label Security(not C)
RMAN AUDIT(not B)
Data Pump(not A)
*Oracle 12c introduces Unified Auditing, which consolidates database audit records including :- DDL, DML, DCL
Fine Grained Auditing (DBMS_FGA)
Oracle Database Real Application Security
Oracle Recovery Manager
Oracle Database Vault
Oracle Label Security
Oracle Data Mining
Oracle Data Pump
Oracle SQL*Loader Direct Load
Your multitenant container (CDB) containing three pluggable databases (PDBs) is running in ARCHIVELOG mode. You find that the SYSAUX tablespace is corrupted in the root container.
The steps to recover the tablespace are as follows:
1. Mount the CDB.
2. Close all the PDBs.
3. Open the database.
4. Apply the archive redo logs.
5. Restore the data file.
6. Take the SYSAUX tablespace offline.
7. Place the SYSAUX tablespace offline.
8. Open all the PDBs with RESETLOGS.
9. Open the database with RESETLOGS.
10. Execute the command SHUTDOWN ABORT.
Which option identifies the correct sequence to recover the SYSAUX tablespace?
A. 6, 5, 4, 7
B. 10, 1, 2, 5, 8
C. 10, 1, 2, 5, 4, 9, 8
D. 10, 1, 5, 8, 10
RMAN> ALTER TABLESPACE sysaux OFFLINE IMMEDIATE;
RMAN> RESTORE TABLESPACE sysaux;
RMAN> RECOVER TABLESPACE sysaux;
RMAN> ALTER TABLESPACE sysaux ONLINE;
While evaluating the 12c beta3 I was not able to do the recover while testing “all pdb files lost”.
Cannot close the pdb as the system datafile was missing…
So only option to recover was:
Shutdown cdb (10)
startup mount; (1)
restore pluggable database
recover pluggable database
alter database open;
alter pluggable database name open;
Oracle support says: You should be able to close the pdb and restore/recover the system tablespace of PDB.
* Inconsistent backups are usually created by taking online database backups. You can also make an inconsistent backup by backing up data files while a database is closed, either:
/ Immediately after the crash of an Oracle instance (or, in an Oracle RAC configuration, all instances)
/ After shutting down the database using SHUTDOWN ABORT
Inconsistent backups are only useful if the database is in ARCHIVELOG mode and all archived redo logs created since the backup are available.
*Open the database with theRESETLOGSoption after finishing recovery:
SQL> ALTER DATABASE OPEN RESETLOGS;
Which three are direct benefits of the multiprocess, multithreaded architecture of Oracle Database 12c when it is enabled?
A. Reduced logical I/O
B. Reduced virtual memory utilization
C. Improved parallel Execution performance
D. Improved Serial Execution performance
E. Reduced physical I/O
F. Reduced CPU utilization
*Multiprocess and Multithreaded Oracle Database Systems
Multiprocess Oracle Database (also called multiuser Oracle Database) uses several processes to run different parts of the Oracle Database code and additional Oracle processes for the users–either one process for each connected user or one or more processes shared by multiple users. Most databases are multiuser because a primary advantage of a database is managing data needed by multiple users simultaneously.
Each process in a database instance performs a specific job. By dividing the work of the database and applications into several processes, multiple users and applications can connect to an instance simultaneously while the system gives good performance.
*In previous releases, Oracle processes did not run as threads on UNIX and Linux systems. Starting in Oracle Database 12c, the multithreaded Oracle Database model enables Oracle processes to execute as operating system threads in separate address spaces.
In order to exploit some new storage tiers that have been provisioned by a storage administrator, the partitions of a large heap table must be moved to other tablespaces in your Oracle 12c database?
Both local and global partitioned B-tree Indexes are defined on the table.
A high volume of transactions access the table during the day and a medium volume of transactions access it at night and during weekends.
Minimal disrupt ion to availability is required.
Which three statements are true about this requirement?
A. The partitions can be moved online to new tablespaces.
B. Global indexes must be rebuilt manually after moving the partitions.
C. The partitions can be compressed in the same tablespaces.
D. The partitions can be compressed in the new tablespaces.
E. Local indexes must be rebuilt manually after moving the partitions.
A:You can create and rebuild indexes online. Therefore, you can update base tables at
the same time you are building or rebuilding indexes on that table. You can perform DML operations while the index build is taking place, but DDL operations are not allowed. Parallel execution is not supported when creating or rebuilding an index online.
*Transporting and Attaching Partitions for Data Warehousing Typical enterprise data warehouses contain one or more large fact tables. These fact tables can be partitioned by date, making the enterprise data warehouse a historical database. You can build indexes to speed up star queries. Oracle recommends that you build local indexes for such historically partitioned tables to avoid rebuilding global indexes every time you drop the oldest partition from the historical database.
D:Moving (Rebuilding) Index-Organized Tables
Because index-organized tables are primarily stored in a B-tree index, you can encounter fragmentation as a consequence of incremental updates. However, you can use the ALTER TABLE…MOVE statement to rebuild the index and reduce this fragmentation.
Which three are true about the large pool for an Oracle database instance that supports shared server connections?
A. Allocates memory for RMAN backup and restore operations
B. Allocates memory for shared and private SQL areas
C. Contains a cursor area for storing runtime information about cursors
D. Contains stack space
E. Contains a hash area performing hash joins of tables
The large pool can provide large memory allocations for the following:
/(B)UGA(User Global Area)for the shared server and the Oracle XA interface (used where transactions interact with multiple databases)
/Message buffers used in the parallel execution of statements /(A)Buffers for Recovery Manager (RMAN) I/O slaves
Optional area in the SGA that provides large memory allocations for backup and restore operations, I/O server processes, and session memory for the shared server and Oracle XA.
An external interface that allows global transactions to be coordinated by a transaction manager other than Oracle Database.
User global area. Session memory that stores session variables, such as logon information, and can also contain the OLAP pool.
*Configuring the Large Pool
Unlike the shared pool, the large pool does not have an LRU list(not D). Oracle Database does not attempt to age objects out of the large pool. Consider configuring a large pool if the database instance uses any of the following Oracle Database features:
In a shared server architecture, the session memory for each client process is included in the shared pool.
Parallel query uses shared pool memory to cache parallel execution message buffers.
Recovery Manager (RMAN) uses the shared pool to cache I/O buffers during backup and restore operations. For I/O server processes, backup, and restore operations, Oracle Database allocates buffers that are a few hundred kilobytes in size.
What are three purposes of the RMAN “FROM” clause?
A. to support PUSH-based active database duplication
B. to support synchronization of a standby database with the primary database in a Data environment
C. To support PULL-based active database duplication
D. To support file restores over the network in a Data Guard environment
E. To support file recovery over the network in a Data Guard environment
*With a control file autobackup, RMAN can recover the database even if the current control file, recovery catalog, and server parameter file are inaccessible. *RMAN uses a recovery catalog to track filenames for all database files in a Data Guard environment. A recovery catalog is a database schema used by RMAN to store metadata about one or more Oracle databases. The catalog also records where the online redo logs, standby redo logs, tempfiles, archived redo logs, backup sets, and image copies are created.
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