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Which two are true about the Oracle database methodology? (Choose two.). The Oracle Database time model should be used to find the database and instance areas most in need of tuning. Tuning activities should stop once the user is satisfied with performance. Tuning activities should stop once agreed service levels for performance have been met. The database instance memory should always be tuned before tuning any file systems. SQL statements should always be tuned before tuning any file systems. The alert log should be used to find the database and instance areas most in need of tuning.

While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup is taking too long and suspect a performance bottleneck. Which three are true about diagnosing and tuning these problems? (Choose three.). If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O. If an RMAN BACKUP VALIDATE command takes noticeably less than an actual backup, then write I/O is a likely bottleneck. If an RMAN BACKUP VALIDATE command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used. Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using asynchronous I/O. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.

CDB1 is a container database. PDB1 and PDB2 are two pluggable databases in CDB1. USER1.EMP is a table in PDB1 and USER2.DEPT is a table in PDB2. CDB1 user SYS executes these commands after connecting successfully to PDB2: SQL> ALTER SESSION SET CONTAINER = pdb1; Session altered. SQL> INSERT INTO user1.emp VALUES(100, 'Alan',1); 1 row created. SQL> INSERT INTO user1.emp VALUES(101, 'Ben', 1); 1 row created. SQL> ALTER SESSION SET CONTAINER = pdb2; Session altered. SQL> INSERT INTO user2.dept VALUES(1,'IT'); Which two are true? (Choose two.). The inserts on USER1.EMP remain uncommitted when the session connected to PDB2. The inserts on USER1.EMP were committed when the session inserted a row into USER2.DEPT. The insert on USER2.DEPT fails because of the active transaction in the parent container. The insert on USER2.DEPT is a recursive autonomous transaction by the child session and is committed. The inserts on USER1.EMP were rolled back when the session connected to PDB2. The insert on USER2.DEPT is uncommitted. The inserts on USER1.EMP were committed when the session connected to PDB2.

Examine this configuration: 1. CDB1 is an Oracle Database 12c Release 2 database containing pluggable databases PDB$SEED, PDB1, and PDB2. 2. PDB$SEED is open READ ONLY 3. PDB1 is open READ WRITE 4. PDB2 is MOUNTED. 5. ORACLE_HOME is /u01/app/oracle/product/18.1.0/dbhome_1. You execute these commands before upgrading the database to the current release: $ . oraenv ORACLE_SID = [cdb1] ? cdb1 The Oracle base remains unchanged with value /u01/app/oracle $ $ORACLE_HOME/jdk/bin/java - jar preupgrade.jar TERMINAL TEXT For which databases will fixup scripts be created?. CDB1, PDB$SEED, PDB1, and PDB2. PDB$SEED, PDB1, and PDB2 only. CDB1 and PDB$SEED only. CDB1, PDB1, and PDB2 only. CDB1, PDB$SEED, and PDB1 only.

Which two are true about Oracle Flashback features? (Choose two.). FLASHBACK QUERY can retrieve REDO records from ONLINE and ARCHIVED REDO LOG files. FLASHBACK VERSION QUERY can retrieve REDO records from ONLINE and ARCHIVED REDO LOG files. FLASHBACK TABLE can undrop a column. FLASHBACK DROP can undrop an index when undropping a table. After a database is restored from flashback logs using the FLASHBACK DATABASE command, it is sometimes rolled forward using redo logs.

Which three are true about an application seed pluggable database (PDB)? (Choose three.). It is automatically synchronized with its application root PDB when an application is upgraded. It cannot be added to an application container after the application container has already been created. A new application PDB created by cloning an application seed PDB can have an old version of the application installed after cloning completes. It is automatically synchronized with its application root PDB when an application is installed. It cannot be dropped from its application container.

CDB1 is a container database. PDB1 and PDB2 are pluggable databases in CDB1. PDB1 and PDB2 are OPEN in READ WRITE mode. You execute these commands successfully: $ export ORACLE_SID=CDB1 $ sqlplus / as sysdba SQL> ALTER SESSION SET CONTAINER = PDB1; Session altered. SQL> SHUTDOWN IMMEDIATE Which two are true? (Choose two.). Uncommitted transactions in PDB1 have been rolled back. PDB1 is closed. Uncommitted transactions in CDB1 and PDB1 have been rolled back. CDB1 is shut down. CDB1 is in MOUNT state.

Which three are true about Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the Manageability Monitor (MMON) background process? (Choose three.). ADDM can recommend shrinking the buffer cache. ADDM can recommend extending the buffer cache. By default, MMON creates an AWR snapshot every 30 minutes. ADDM performs its analysis only when a DBA requests it. By default, AWR snapshots are automatically purged after eight days. AWR snapshots must be deleted when no longer required by ADDM.

Examine the command for creating pluggable database PDB2 in container database CDB2. CREATE PLUGGABLE DATABASE pdb2 ADMIN USER pdb2_adm IDENTIFIED BY 123pdb ROLES = (CONNECT); Select three options, any one of which is required for it to execute successfully? (Choose three.). Add the FILE_NAME_CONVERT clause to the statement and set the PDB_FILE_NAME_CONVERT parameter. Add only the CREATE_FILE_DEST clause to the statement. Set only the PDB_FILE_NAME_CONVERT parameter. Set the PDB_FILE_NAME_CONVERT parameter and enable OMF. Enable only OMF. Add the FILE_NAME_CONVERT clause to the statement and enable Oracle Managed Files (OMF).

Which two are true about Recovery Manager (RMAN) diagnostic message output? (Choose two.). Media Management messages for SBT devices are always written to sbtio.log. RMAN error stacks should be read from the bottom up as that is the order in which errors are generated. RMAN error stacks should be read from the top down as that is the order in which errors are generated. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file and to standard output. The RMAN LOG command line clause causes output issued during RMAN command compilation to be written to a log file only. Media Management messages for SBT devices are written to an Oracle trace file.

Which three are true about managing memory components in an Oracle database instance? (Choose three.). With Automatic Shared Memory Management, the database instance can increase the Large Pool size by reducing the Shared Pool size. With Automatic Memory Management, the database instance can increase the System Global Area size by reducing the Program Global Area size. Automatically tuned and resized System Global Area components will always revert to their initial sizes after an instance restart. Automatic Memory Management must be used together with locking the System Global Area into physical memory. With Automatic Shared Memory Management, the database instance can increase the Program Global Area size by reducing the System Global Area size. On Line Transaction Processing systems often use less Program Global Area than Decision Support Systems.

A database is configured in ARCHIVELOG mode. Full RMAN backups are taken and no backup to trace has been taken of the control file. A media failure has occurred. In which two scenarios is complete recovery possible? (Choose two.). when any archived log from, before, or after the most recent backup is corrupt. after losing all copies of the control file. after losing an archived log from after the most recent backup. after losing an archived log from before the most recent backup. after losing the SYSTEM tablespace.

Which three are true about Database Point-in-Time Recovery? (Choose three.). The database must have FLASHBACK DATABASE ON to perform Database Point-in-Time Recovery. The database must be in MOUNT state when performing Database Point-in-Time Recovery. Database Point-in-Time Recovery is performed by the Managed Recovery Process (MRP). The Database must be in ARCHIVELOG mode. The target point for the recovery must be specified as a time or System Change Number (SCN). The database must be open RESETLOGS after Database Point-in-Time Recovery.

Which three are true about the SQL Tuning Advisor? (Choose three.). It checks each query being analyzed for stale statistics. It checks each query being analyzed for missing statistics. It only recommends syntactic changes to SQL statements. It can recommend semantic changes to SQL statements. It considers all SQL statements being analyzed by the advisor task as a group. It builds SQL profiles for each poorly performing SQL statement to prevent regressions.

Which two are true about duplicating pluggable databases (PDBs) with RMAN? (Choose two.). Two or more PDBs can be duplicated with the same RMAN DUPLICATE command. All tablespaces belonging to a PDB must be duplicated when duplicating the PDB. The auxiliary instance is automatically created with ENABLE_PLUGGABLE_DATABASE = TRUE. A user with SYSDBA or SYSBACKUP must be logged in with RMAN to the PDB to duplicate it. CDB$ROOT and PDB$SEED are automatically duplicated.

Which three are true about Rapid Home Provisioning (RHP), which has been available since Oracle 18c? (Choose three.). It is an Oracle Database service. It cannot be used to upgrade Oracle Database homes. It can be used to provision applications. It can be used to patch Grid Infrastructure homes containing Oracle Restart. It can be used to provision middleware. It is an Oracle Grid Infrastructure service.

CDB1 is a container database. COMMON_USER_PREFIX is C#. PDB1 is a pluggable database contained in CDB1. APP1_ROOT is an application container contained in CDB1. APP1_PDB1 is an application PDB contained in APP1_ROOT. You execute these commands successfully: $ sqlplus sys/oracle_4U@localhost:1521/cdb1 as sysdba SQL> CREATE USER c#user1 identified by oracle_4U container=all; User created. SQL> ALTER SESSION SET CONTAINER=pdb1; Session altered. SQL> CREATE USER p1_user1 identified by oracle_4U; User Created. SQL> ALTER SESSION SET CONTAINER=app1_root; Session altered. SQL> ALTER PLUGGABLE DATABASE APPLICATION app1_cdb1_app BEGIN INSTALL '1.0'; Session altered. SQL> CREATE USER app1_user1 IDENTIFIED BY oracle_4U; User Created. SQL> ALTER PLUGGABLE DATABASE APPLICATION app1_cdb1_app END INSTALL '1.0'; Pluggable database altered. Which two are true? (Choose two.). APP1_USER1 can be created in PDB1. APP1_USER1 can be created in CDB1. APP1_USER1 can have different privileges in each Application PDB contained in APP1_ROOT. C##_APP_USER1 can be created in CDB1. P1_USER1 can be created in CDB1. C##_USER1 will have the same privileges and roles granted in all PDBs in CDB1.

Which two are facets of performance planning that should always be considered or implemented for an Oracle Database environment? (Choose two.). defining primary keys for all tables to speed up all queries. using check constraints to speed up updates. defining foreign keys for all tables to speed up joins. the physical data model. the configuration of storage arrays.

Which three actions are performed by Database Upgrade Assistant (DBUA)? (Choose three.). It recompiles all stored PL/SQL code by using utlp.sql. It empties the RECYCLE BIN. It performs prerequisite checks to verify if the Oracle database is ready for upgrade. It sets all user tablespaces to "read-only" before starting the upgrade. It removes the AUDSYS schema and the AUDIT_ADMIN and AUDIT_VIEWER roles. It increases tablespace size, if required, to meet upgrade requirements.

Which two are true about RMAN backups when using a media manager to write backups to tape when there are only two tape drives? (Choose two.). SBT tape compression can be used even if no RMAN compression is configured. Any backup set written to the SBT device in this configuration can contain a maximum of two backup pieces. Any backup written to the SBT device in this configuration can contain a maximum of two backup sets. SBT tape compression and RMAN backup compression should be used in parallel. The SBT device should be configured to use PARALLELISM 2 to allow both tape drives to be used simultaneously.

You plan to install Oracle Grid Infrastructure for a Standalone Server and Oracle Database for the first time on a server. Examine this command and its outcome: # id oracle uid=54321 (oracle) gid=54321 (oinstall) groups=54321 (oinstall), 54322 (dba) Which two are true? (Choose two.). oracle will be an owner of the Oracle Inventory. oracle must be the owner of every Oracle Database installation. oracle can own an Oracle Database installation but not an Oracle Grid Infrastructure installation. oracle will be granted the SYSASM privilege when installing the Oracle Database software. The user account, oracle, and group, oinstall, can be used for all Oracle software installations.

Examine this configuration: 1. CDB1 is a container database running in ARCHIVELOG mode. 2. Controlfiles of CDB1 are multiplexed in '/u01/app/oracle/oradata/CDB1/controlfile/controlfile01.ctl' and '/u02/app/oracle/fast_recover_area/cdb1/CDB1/controlfile02.ctl'. 3. The only backup of CDB1 was taken when CONTROLFILE AUTOBACK was OFF 4. SNAPSHOT CONTROLFILE NAME is '/u01/app/oracle/product/12.2.0.1/db_1/dbs/snapcf_cdb1.f'. While CDB1 is open, '/u02/app/oracle/fast_recover_area/cdb1/CDB1/controlfile02.ctl' is accidentally deleted. To recover from this critical failure, you execute these commands: $ rman target sys/oracle_4U@localhost:1521/cdb1 RMAN> SHUTDOWN ABORT ... Oracle instance shut down RMAN> STARTUP NOMOUNT RMAN> RESTORE CONTROLFILE FROM '/u01/app/oracle/oradata/CDB1/controlfile/controlfile01.ctl'; What will be the outcome?. It will create '$ORACLE_HOME/dbs/cdb1/CDB1/controlfile02.ctl'. It will create '/u01/app/oracle/oradata/CDB1/controlfile/controlfile02.ctl'. It will re-create '/u02/app/oracle/fast_recover_area/cdb1/CDB1/controlfile02.ctl'. It will create '/u01/app/oracle/product/12.2.0.1/db_1/dbs/snapcf_cdb1control02.ctl'. It will fail because there is no autobackup of the controlfiles.

Examine these actions: 1. Create a new database for a recovery catalog. 2. Create a tablespace with sufficient space in the catalog database for the recovery catalog. 3. Configure ARCHIVELOG mode for the catalog database. 4. Create a user to own the recovery catalog schema with quota on the tablespace that will contain the catalog. 5. Grant the RECOVERY_CATALOG_OWNER role to the recovery catalog schema owner. 6. Grant the SYSBACKUP privilege to the recovery catalog schema owner. Which are the minimum actions that must be performed before executing the CREATE CATALOG command?. 2,4,5,6. 1,2,3,4,5,6. 1,2,4,5. 2,4,5. 1,3,4,5.

Which two are true about creating pluggable databases (PDBs) using snapshots in Oracle 19c and later releases? (Choose two.). A PDB snapshot is always a full copy of the source PDB. A PDB snapshot is always a sparse copy of the source PDB. A snapshot copy PDB depends on a storage snapshot which can only be stored on specific file systems. A PDB snapshot depends on a storage snapshot which can be stored on any file system. A PDB snapshot depends on a storage snapshot which can only be stored on specific file systems. A snapshot copy PDB depends on a storage snapshot which can be stored on any file system. A snapshot copy PDB can be created from a stand-alone clone PDB.

Which two are true about Oracle Database Configuration Assistant (DBCA) templates? (Choose two.). The General Purpose or Transaction Processing templates are most suitable when concurrency and recoverability are key criteria. Oracle DBCA templates can store only logical structure and not database files. New templates can only be created by modifying an existing user-created template. The Data Warehouse template is most suitable when transaction response time is the key criterion. Oracle DBCA templates can be used to create new databases and duplicate existing databases.

Your SALES_ROOT application container has two application PDBs. The SALES_APP application has a common table, FIN.REVENUE, in the two PDBs. Examine this query and its output: SELECT containers_default, container_map, table_name FROM dba_tables WHERE owner = 'FIN'; CONTAINERS_DEFAULT|CONTAINER_MAP|CONTAINER_MAP_OBJECT|TABLE_NAME NO|YES|NO|REVENUE NO|NO|YES|MAPTABLE Which two are true? (Choose two.). The CONTAINERS clause cannot be used in queries on the REVENUE table. The REVENUE table must be a list-partitioned table. The MAPTABLE table defines a logical partition key on a commonly used column for the REVENUE table. The MAPTABLE table is a metadata-linked table. A container map exists for the REVENUE table, but is not enabled. The REVENUE table partitions are not pruned across the PDBs automatically.

Your container database, CDB1, has an application container, HR_ROOT, with an application PDB, HR_PDB1. You have the required privilege to clone HR_PDB1 to container database CDB2, which does not contain HR_ROOT. Which two are always true? (Choose two.). CDB1 and CDB2 must be in shared undo mode. A common user must exist in CDB2 with the CREATE PLUGGABLE DATABASE privilege. All transactions in HR_PDB1 of CDB1 must commit before the cloning process starts. Cloning HR_ROOT automatically clones HR_PDB1. The HR_PDB1 clone created in CDB2 will be in mount state when cloning ends.

Which three are true about backup, restore, and recovery operations done without using Recovery Manager (RMAN)? (Choose three.). Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance be started and the database be in the MOUNT state. Backing up a database in ARCHIVELOG mode using O/S utilities requires that the database instance be started and the database be in MOUNT state. An Oracle database can be restored from backup files copied using O/S utilities. Oracle data file backups, copied using an O/S utility, can be added to the RMAN catalog as IMAGE COPIES. Backing up a database in NOARCHIVELOG mode using O/S utilities requires that the database instance be shut down. Oracle archive log backups, copied using an O/S utility, can be added to the RMAN catalog as a backup set. Backing up a database in ARCHIVELOG mode using O/S utilities requires that the database instance be started and the database be in OPEN state.

Examine this configuration: 1. CDB1 is a container database. 2. PDB1 and PDB2 are pluggable databases in CDB1. You execute these commands successfully: $ export ORACLE_SID=cdb1 $ sqlplus / as sysdba SQL> SHUTDOWN IMMEDIATE Oracle instance shut down. SQL> STARTUP MOUNT Database mounted. Which two are true? (Choose two.). PDB1 and PDB2 are in MOUNT state. Redo logs are opened. PDB1 and PDB2 are in READ ONLY state. CDB$ROOT is in MOUNT state. PDB$SEED is in READ ONLY state.