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NEW QUESTION 179
Which three statements are true about using flashback database in a multitenant container database (CDB)? (Choose three.) (Choose three.)
- A. Individual PDBs can be flashed back without flashing back the entire CDB.
- B. The DB_FLASHBACK RETENTION_TARGET parameter must be set to enable flashback of the CDB.
- C. The root container can be flashed back without flashing back the pluggable databases (PDBs).
- D. To enable flashback database, the CDB must be mounted.
- E. A CDB can be flashed back specifying the desired target point in time or an SCN, but not a restore point.
Answer: B,C,D
Explanation:
Explanation/Reference:
Explanation:
NEW QUESTION 180
You conned using SQL Plus to the root container of a multitenant container database (CDB) with SYSDBA
privilege.
The CDB has several pluggable databases (PDBs) open in the read/write mode.
There are ongoing transactions in both the CDB and PDBs.
What happens alter issuing the SHUTDOWN TRANSACTIONAL statement?
- A. The shutdown proceeds as soon as all transactions in both the CDB and PDBs are either committed or
rolled back. - B. The shutdown proceeds immediately. The shutdown proceeds as soon as all transactions in the PDBs
are either committed or rolled hack. - C. The statement results in an error because there are open PDBs.
- D. The shutdown proceeds as soon as all transactions in the CDB are either committed or rolled back.
Answer: D
Explanation:
Explanation/Reference:
Explanation:
* SHUTDOWN [ABORT | IMMEDIATE | NORMAL | TRANSACTIONAL [LOCAL]]
Shuts down a currently running Oracle Database instance, optionally closing and dismounting a database.
If the current database is a pluggable database, only the pluggable database is closed. The consolidated
instance continues to run.
Shutdown commands that wait for current calls to complete or users to disconnect such as SHUTDOWN
NORMAL and SHUTDOWN TRANSACTIONAL have a time limit that the SHUTDOWN command will wait.
If all events blocking the shutdown have not occurred within the time limit, the shutdown command cancels
with the following message:
ORA-01013: user requested cancel of current operation
* If logged into a CDB, shutdown closes the CDB instance.
To shutdown a CDB or non CDB, you must be connected to the CDB or non CDB instance that you want
to close, and then enter
SHUTDOWN
Database closed.
Database dismounted.
Oracle instance shut down.
To shutdown a PDB, you must log into the PDB to issue the SHUTDOWN command.
SHUTDOWN
Pluggable Database closed.
Note:
* Prerequisites for PDB Shutdown
When the current container is a pluggable database (PDB), the SHUTDOWN command can only be used
if:
The current user has SYSDBA, SYSOPER, SYSBACKUP, or SYSDG system privilege.
The privilege is either commonly granted or locally granted in the PDB.
The current user exercises the privilege using AS SYSDBA, AS SYSOPER, AS SYSBACKUP, or AS
SYSDG at connect time.
To close a PDB, the PDB must be open.
NEW QUESTION 181
Which two statements are true about Automatic Database Diagnostic Monitor (ADDM)? (Choose two.)
- A. Its results are stored in AWR.
- B. It requires at least one Automatic Workload Repository (AWR) snapshot for analysis.
- C. It runs automatically after each AWR snapshot is created and requires at least two snapshots for analysis.
- D. It calls SQL advisors automatically if required.
- E. It provides recommendations only for poorly performing SQL statements.
Answer: A,B
NEW QUESTION 182
Flashback is enabled for your multitenant container database (CDB), which contains two pluggable database (PDBs). A local user was accidently dropped from one of the PDBs.
You want to flash back the PDB to the time before the local user was dropped. You connect to the CDB and execute the following commands:
SQL > SHUTDOWN IMMEDIATE
SQL > STARTUP MOUNT
SQL > FLASHBACK DATABASE to TIME "TO_DATE ('08/20/12' , 'MM/DD/YY')";
Examine following commands:
1 . ALTER PLUGGABLE DATABASE ALL OPEN;
2 . ALTER DATABASE OPEN;
3. ALTER DATABASE OPEN RESETLOGS;
Which command or commands should you execute next to allow updates to the flashback back schema?
- A. Only 2
- B. Only 3
- C. 3 and 1
- D. 1 and 2
- E. Only 1
Answer: C
NEW QUESTION 183
Examine the commands executed to monitor database operations:
$> conn sys oracle/oracle@prod as sysdba
SQL > VAR eid NUMBER
SQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION ('batch_job' , FORCED_TRACKING
=> 'Y');
Which two statements are true?
- A. Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + TUNING.
- B. Database operations will be monitored only when they consume a significant amount of resource.
- C. Database operations for all sessions will be monitored.
- D. All subsequent statements in the session will be treated as one database operation and will be monitored.
- E. Only DML and DDL statements will be monitored for the session.
Answer: A,D
Explanation:
Explanation/Reference:
Explanation:
C: Setting the CONTROL_MANAGEMENT_PACK_ACCESS initialization parameter to DIAGNOSTIC
+TUNING (default) enables monitoring of database operations. Real-Time SQL Monitoring is a feature of the Oracle Database Tuning Pack.
Note:
* The DBMS_SQL_MONITOR package provides information about Real-time SQL Monitoring and Real- time Database Operation Monitoring.
*(not B) BEGIN_OPERATION Function
starts a composite database operation in the current session.
/(E) FORCE_TRACKING - forces the composite database operation to be tracked when the operation starts. You can also use the string variable 'Y'.
/(not A) NO_FORCE_TRACKING - the operation will be tracked only when it has consumed at least 5 seconds of CPU or I/O time. You can also use the string variable 'N'.
NEW QUESTION 184
You install Oracle Grid Infrastructure for a standalone server.
Which two components are automatically included in the Oracle Restart configuration? (Choose two.)
- A. Oracle Notification services
- B. A pre-existing Oracle Net Listener
- C. A pre-existing database
- D. A pre-existing Oracle management agent
- E. Oracle CSSDservice
Answer: A,E
Explanation:
Explanation
Explanation/Reference:
References: https://docs.oracle.com/database/121/LADBI/oraclerestart.htm#LADBI999
NEW QUESTION 185
On your Oracle 12c database, you Issue the following commands to create indexes
SQL > CREATE INDEX oe.ord_customer_ix1 ON oe.orders (customers_id, sales_rep_id) INVISIBLE;
SQL> CREATE BITMAP INDEX oe.ord_customer_ix2 ON oe.orders (customers_id, sales_rep_id);
Which two statements are correct? (Choose two.)
- A. The optimizer evaluates index access from both the Indexes before deciding on which index to use for
query execution plan. - B. Only the ORD_CUSTOMER_IX1 index is created.
- C. Both the indexes are created; however, only the ORD_COSTOMER index is visible.
- D. Both the indexes are updated when a new row is inserted, updated, or deleted In the orders table.
- E. Only the ORD_CUSTOMER_IX2 index is created.
Answer: C,D
Explanation:
Explanation/Reference:
Explanation:
11G has a new feature called Invisible Indexes. An invisible index is invisible to the optimizer as default.
Using this feature we can test a new index without effecting the execution plans of the existing sql
statements or we can test the effect of dropping an index without dropping it.
NEW QUESTION 186
You are connected using SQL* Plus to a multitenant container database (CDB) with SYSDBA privileges and execute the following sequence statements:
What is the result of the last SET CONTAINER statement and why is it so?
- A. If fails because the SET CONTAINER statement cannot be used with PDB$SEED as the target pluggable database (PDB).
- B. It fails because common users are unable to use the SET CONTAINER statement.
- C. It fails because local users are unable to use the SET CONTAINER statement.
- D. It succeeds because the PDB_ADMIN user has the required privileges.
Answer: C
Explanation:
Explanation/Reference:
Explanation:
NEW QUESTION 187
Your production database PROD uses file system storage. You want to migrate storage including the Fast Recovery Area for the PROD database to Oracle Automatic Storage Management (ASM) by using RMAN. You back up the entire database.
What should the next step be in this migration process?
- A. disabling Oracle Flashback Database if enabled
- B. enabling row movement for the database
- C. opening the database in exclusive mode
- D. placing all tablespaces in read-only mode
Answer: A
Explanation:
References: https://docs.oracle.com/cd/E11882_01/server.112/e18951/asm_rman.htm#OSTMG89995
NEW QUESTION 188
Which two statements are true about Oracle network connections?
- A. The listener always spawns a new server process to deal with each new connection.
- B. A server process checks a user's authentication credentials and creates a session if the credentials are valid.
- C. The listener continuously monitors a connection after the user process connects to a service handler.
- D. A listener may listen on behalf of only one database instance at a time.
- E. A connection request from a client is always first received by a listener running on the port that is used for the
connection request for the database server.
Answer: A,B
NEW QUESTION 189
When is the UNDO_RETENTIONparameter value ignored by a transaction?
- A. when there are multiple undo tablespaces available in a database
- B. when Flashback Database is enabled
- C. when the undo tablespace is of a fixed size and retention guarantee is not enabled
- D. when the data file of the undo tablespace is autoextensible
Answer: C
Explanation:
Explanation/Reference:
References: https://docs.oracle.com/cd/B19306_01/server.102/b14231/undo.htm (undo retention)
NEW QUESTION 190
In your multitenant container database (CDB) containing pluggable database (PDBs), you granted the CREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs. You execute the following command from the root container:
SQL > REVOKE create table FROM C # # A_ADMIN;
What is the result?
- A. It fails and reports an error because the CONTAINER=CURRENT clause is not used.
- B. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.
- C. It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.
- D. It fails and reports an error because the CONTAINER=ALL clause is not used.
- E. It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.
Answer: E
Explanation:
Explanation/Reference:
Explanation:
REVOKE ..FROM
If the current container is the root:
/Specify CONTAINER = CURRENT to revoke a locally granted system privilege, object privilege, or role from a common user or common role. The privilege or role is revoked from the user or role only in the root.
This clause does not revoke privileges granted with CONTAINER = ALL.
/Specify CONTAINER = ALL to revoke a commonly granted system privilege, object privilege on a common object, or role from a common user or common role. The privilege or role is revoked from the user or role across the entire CDB. This clause can revoke only a privilege or role granted with CONTAINER = ALL from the specified common user or common role. This clause does not revoke privileges granted locally with CONTAINER = CURRENT. However, any locally granted privileges that depend on the commonly granted privilege being revoked are also revoked.
If you omit this clause, then CONTAINER = CURRENT is the default.
References:
NEW QUESTION 191
You have just completed a manual upgrade of an Oracle 11g Database to Oracle Database 12c.
The Post-Upgrade Status Tool reports an INVALIDstatus for some of the components after the upgrade.
What must you do first in this situation to attempt to fix this problem?
- A. Run catuppst.sqlto perform revalidation actions
- B. Run utluiobj.sqlto filter out objects that were invalidated by the upgrade process.
- C. Run preupgrd.sqland then execute the generated "fix-up" scripts to resolve status issues.
- D. Run utlrp.sqlto recompile stored PL/SQL and Java code and check the DBA_REGISTRYview.
Answer: C
NEW QUESTION 192
The ORCL database is configured to support shared server mode. You want to ensure that a user connecting remotely to the database instance has a one-to-one ratio between client and server processes.
Which connection method guarantees that this requirement is met?
- A. connecting by using an external naming method
- B. connecting by using the easy connect method
- C. connecting by using the local naming method with the server = dedicated parameter set in the tnsnames.ora file for the net service
- D. creating a service in the database by using the dbms_service.create_service procedure and using this service for creating a local naming service
- E. connecting by using a directory naming method
Answer: D,E
Explanation:
Explanation/Reference:
Explanation:
NEW QUESTION 193
Which three statements are true about adaptive SQL plan management?
- A. It adds new, bettor plans automatically as fixed plans to the baseline.
- B. It automatically performs verification or evolves non-accepted plans, in COMPREHENSIVE mode when they
perform better than existing accepted plans. - C. The non-accepted plans are automatically accepted and become usable by the optimizer if they perform better
than the existing accepted plans. - D. The non-accepted plans in a SQL plan baseline are automatically evolved, in COMPREHENSIVE mode, during the
nightly maintenance window and a persistent verification report is generated. - E. The optimizer always uses the fixed plan, if the fixed plan exists in the plan baseline.
Answer: B,C,D
Explanation:
With adaptive SQL plan management, DBAs no longer have to manually run the verification or evolve process for non-
accepted plans. When automatic SQL tuning is in COMPREHENSIVE mode, it runs a verification or evolve process for
all SQL statements that have non-accepted plans during the nightly maintenance window. If the non-accepted plan
performs better than the existing accepted plan (or plans) in the SQL plan baseline, then the plan is automatically
accepted and becomes usable by the optimizer. After the verification is complete, a persistent report is generated
detailing how the non-accepted plan performs compared to the accepted plan performance. Because the evolve
process is now an AUTOTASK, DBAs can also schedule their own evolve job at end time.
Note:
* The optimizer is able to adapt plans on the fly by predetermining multiple subplans for portions of the plan.
* Adaptive plans, introduced in Oracle Database 12c, enable the optimizer to defer the final plan decision for a
statement until execution time. The optimizer instruments its chosen plan (the default plan) with statistics collectors
so that it can detect at runtime, if its cardinality estimates differ greatly from the actual number of rows seen by the
operations in the plan. If there is a significant difference, then the plan or a portion of it will be automatically adapted
to avoid suboptimal performance on the first execution of a SQL statement.
References:
NEW QUESTION 194
In your production database, data manipulation language (DML) operations are executed on the SALES table.
You have noticed some dubious values in the SALES table during the last few days. You are able to track users, actions taken, and the time of the action for this particular period but the changes in data are not tracked. You decide to keep track of both the old data and new data in the table long with the user information.
What action would you take to achieve this task?
- A. Implement value-based auditing.
- B. Impose standard database auditing to audit SQL statements.
- C. Apply fine-grained auditing.
- D. Impose standard database auditing to audit object privileges.
Answer: C
Explanation:
https://books.google.com.pk/books?id=TD5eibhYyd8C&pg=PA236&lpg=PA236&dq=oracle
+ auditing+keep+track+of+both+the+old+data+and+new+data+in+the+table+long+with+the
+ user+information&source=bl&ots=buMRdjIEkm&sig=tHCT-
XUPVSd1eFJZFcr2lkEifvo&hl=en&sa=X&redir_esc=y#v=onepage&q=oracle%20auditing%
2 0keep%20track%20of%20both%20the%20old%20data%20and%20new%20data%20in%
2 0the%20table%20long%20with%20the%20user%20information&f=false
NEW QUESTION 195
In your database, you want to ensure that idle sessions that are blocking active are automatically
terminated after a specified period of time.
How would you accomplish this?
- A. Implementing Database Resource Manager
- B. Enabling resumable timeout for user sessions
- C. Setting a metric threshold
- D. Decreasing the value of the IDLE_TIME resource limit in the default profile
Answer: A
NEW QUESTION 196
The HRuser owns the BONUSEStable. HRgrants privileges to the user TOMby using the command:
SQL> GRANT SELECT ON bonuses TO tom WITH GRANT OPTION;
TOMthen executes this command to grant privileges to the user JIM:
SQL> GRANT SELET ON hr.bonuses TO jim;
Which statement is true?
- A. HRcan revoke the SELECT ON HR.BONUSES privilege from JIM.
- B. HRcan revoke the SELECT ON HR.BONUSESprivilege from TOM, which will automatically revoke the SELECT ON HR.BONUSES privilege from JIM.
- C. JIM can grant the SELECT ON HR.BONUSES privilege to other users, but cannot revoke the privilege from them.
- D. TOMcannot revoke the SELECT ON HR.BONUSESprivilege from JIM.
Answer: B
NEW QUESTION 197
In which situations does the Database Writer process (DBWn) write to data files? (choose two).
- A. when a tablespace is made read-only or taken offline
- B. when the RMAN recovery process starts
- C. when a user process commits a transaction
- D. when PMON cleans up dirty buffers in the database buffer cache
- E. when clean buffers for reading new blocks into the database buffer cache are not found easily
Answer: C,D
Explanation:
Explanation
References https://docs.oracle.com/cd/B19306_01/server.102/b14220/process.htm
NEW QUESTION 198
Which four are true about creating and running a remote database scheduler jobs? (Choose four.)
- A. A database destination group must exist or be created for a job to run on multiple remote databases
- B. A credential is optional for a remote database job
- C. A destination is optional for a remote database job because DB links can be used instead
- D. Remote database jobs always run as the same user who submits the job on the local database
- E. A database destination must exist or be created for the remote database
- F. A credential must be created to define the remote user
- G. It must run as a user that is defined on the remote database
Answer: A,B,E,G
NEW QUESTION 199
Identify three valid methods of opening, pluggable databases (PDBs).
- A. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from the root
- B. ALTER PLUGGABLE DATABASE OPEN issued from that PDB
- C. ALTER PLUGGABLE DATABASE OPEN ALL ISSUED from a PDB
- D. ALTER PLUGGABLE DATABASE PDB OPEN issued from the seed
- E. ALTER PLUGGABLE DATABASE PDB OPEN issued from another PDB
- F. ALTER DATABASE PDB OPEN issued from the root
- G. ALTER DATABASE OPEN issued from that PDB
Answer: A,B,G
Explanation:
Explanation/Reference:
Explanation:
E: You can perform all ALTER PLUGGABLE DATABASE tasks by connecting to a PDB and running the corresponding ALTER DATABASE statement. This functionality is provided to maintain backward compatibility for applications that have been migrated to a CDB environment.
AG: When you issue an ALTER PLUGGABLE DATABASE OPEN statement, READ WRITE is the default unless a PDB being opened belongs to a CDB that is used as a physical standby database, in which case READ ONLY is the default.
You can specify which PDBs to modify in the following ways:
List one or more PDBs.
Specify ALL to modify all of the PDBs.
Specify ALL EXCEPT to modify all of the PDBs, except for the PDBs listed.
NEW QUESTION 200
The user SCOTT owns the CUST table that is placed in the SALES tablespace. The user SCOTT opens a session and
executes commands as follows:
SQL> INSERT INTO cust VALUES(101, 'JACK');
1 row created.
SQL> INSERT INTO cust VALUES(102, 'SMITH');
1 row created.
As a DBA, you execute the following command from another session:
ALTER TABLESPACE sales READ ONLY;
Which statement is true regarding the effect of this command on the transaction in Scott's session?
- A. The command fails as a transaction is still pending.
- B. The command waits and the user SCOTT can execute data manipulation language (DML) statements only as part of
the current transaction. - C. The transaction in Scott's session is rolled back and the tablespace becomes readonly.
- D. The command hangs until all transactions on the objects in the tablespace commit or rollback, and then the
tablespace is placed in readonly mode.
Answer: B
Explanation:
You can issue the ALTER TABLESPACE...READ ONLY statement while the database is processing transactions. After the
statement is issued, the tablespace is put into a transitional read-only state. No transactions are allowed to make
further changes (using DML statements) to the tablespace. If a transaction attempts further changes, it is terminated
and rolled back. However, transactions that already made changes and that attempt no further changes are allowed
to commit or roll back.
NEW QUESTION 201
You configured the flash recovery area in the database. Which two files would you expect to find in the flash recovery area? (Choose two.)
- A. control file autobackups
- B. trace file generated using BACKUP CONTROLFILE TO TRACE
- C. copies of all parameter files
- D. backup pieces
Answer: A,D
NEW QUESTION 202
Examine the contents of SQL loader control file:
Which three statements are true regarding the SQL* Loader operation performed using the control file?
- A. The SQL* Loader operation assumes that the file must be a streamrecord format file with the normal carriage return string as the record terminator.
- B. The SQL* Loader data file myfile1.dat has the column names for the EMP table.
- C. Field names should be the first line in the both the SQL* Loader data files.
- D. An EMP table is created if a table does not exist. Otherwise, if the EMP table is appended with the loaded data.
- E. The SQL* Loader operation fails because no record terminators are specified.
Answer: A,B,D
Explanation:
A: The APPEND keyword tells SQL*Loader to preserve any preexisting data in the table.
Other options allow you to delete preexisting data, or tofail with an error if the table is not empty to begin with.
B (not D):
Note:
* SQL*Loader-00210: first data file is empty, cannot process the FIELD NAMES record
Cause: The data file listed in the next message was empty. Therefore, the FIELD NAMES
FIRSTFILE directive could not be processed.
Action: Check the listed data file and fix it. Then retry the operation
E:
* A comma-separated values (CSV) (also sometimes called character-separated values, because the separator character does not have to be a comma) file stores tabular data
(numbers and text) in plain-text form. Plain text means that the file is a sequence of characters, with no data that has to be interpreted instead, as binary numbers. A CSV file consists of any number of records, separated by line breaks of some kind; each record consists of fields, separated by some other character or string, most commonly a literal comma or tab. Usually, all records have an identical sequence of fields.
* Fields with embedded commas must be quoted.
Example:
1 997,Ford,E350,"Super, luxurious truck"
Note:
* SQL*Loader is a bulk loader utility used for moving data from external files into the Oracle database.
NEW QUESTION 203
A warehouse fact table in your Oracle 12c Database is range-partitioned by month and accessed frequently with queries that span multiple partitions
The table has a local prefixed, range partitioned index.
Some of these queries access very few rows in some partitions and all the rows in other partitions, but these queries still perform a full scan for all accessed partitions.
This commonly occurs when the range of dates begins at the end of a month or ends close to the start of a month.
You want an execution plan to be generated that uses indexed access when only a few rows are accessed from a segment, while still allowing full scans for segments where many rows are returned.
Which three methods could transparently help to achieve this result? (Choose three.)
- A. Using a partial global index on the warehouse fact table month column with indexing disabling for the table partitions that return most of their rows to the queries.
- B. Converting the partitioned table to a partitioned view that does a UNION ALL query on the monthly tables, which retains the existing local partitioned column.
- C. Using a partial local Index on the warehouse fact table month column with indexing disabled to the table partitions that return most of their rows to the queries.
- D. Using a partial local Index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.
- E. Using a partial global index on the warehouse fact table month column with indexing disabled for the table partitions that return a few rows to the queries.
- F. Using a partitioned view that does a UNION ALL query on the partitions of the warehouse fact table, which retains the existing local partitioned column.
Answer: A,C,F
Explanation:
Note:
* Oracle 12c now provides the ability to index a subset of partitions and to exclude the others.
Local and global indexes can now be created on a subset of the partitions of a table. Partial Global indexes provide more flexibility in index creation for partitioned tables. For example, index segments can be omitted for the most recent partitions to ensure maximum data ingest rates without impacting the overall data model and access for the partitioned object.
Partial Global Indexes save space and improve performance during loads and queries. This feature supports global indexes that include or index a certain subset of table partitions or subpartitions, and exclude the others. This operation is supported using a default table indexing property. When a table is created or altered, a default indexing property can be specified for the table or its partitions.
NEW QUESTION 204
......
More Info
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