Oracle Database 12c Essentials 1Z0-497 exam questions
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ExamGood provides free exam study guides and questions to help users pass IT certification exams. The document contains a sample exam question and answer set covering various Oracle Database 12c topics such as CDB architecture, post-installation tasks, session management, SQL*Plus, database processes, SQL*Loader, transactions, storage structures, multitenant architecture benefits, security features, Automatic Database Diagnostic Monitor, and solutions for reducing downtime.
Oracle Database 12c Essentials 1Z0-497 exam questions
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- 2. The safer , easier way to help you pass any IT exams. 1 / 7 Exam : 1Z0-497 Title : Version : DEMO Oracle Database 12c Essentials
- 3. The safer , easier way to help you pass any IT exams. 2 / 7 1.Which statement about CDB architecture is true? A. Oracle-supplied metadata resides only in the root container. B. A seed PDB can sometimes be opened for particular operations. C. Multiple PDBs with the same name can reside in the same CDB. D. A CDB can have an infinite number of PDBs. E. You can create common users in PDBs. Answer: A Explanation: Reference: http://docs.oracle.com/cd/E16655_01/server.121/e17633/cdbovrvw.htm#CNCPT89235 2.As part of your Oracle Database 12c post-installation tasks, you run these commands: Cd $ORACLE_HOME/bin srvctl stop database -d myDb chopt enable dm srvctl start database -d myDb What does this do? A. It enables the Oracle Data Mining option in your Oracle binary files. B. It creates the Fast Recovery Area disk group. C. It generates Client Static Library. D. It configures one of the Oracle user accounts. E. It configures Oracle Net Services. F. It configures Oracle Messaging Gateway. Answer: A Explanation: Reference: http://docs.oracle.com/cd/E16655_01/install.121/e17889/postinst.htm#RILIN1049 (see 4.4) 3.Exhibit below: Which three statements are true about terminating a session? A. Without any error, you can terminate the active session by executing: SQL> ALTER SYSTEM KILL SESSIOU '7, 15'; B. You can terminate the active session by executing: SQL> ALTER SYSTEM KILL SESSIOM "7, 15'; But you also get the error message: ORA-00028: your session has been killed C. You cannot terminate the active session. You have to wait until that session becomes inactive. D. Without any error, you can terminate the inactive session by executing: SQL> ALTER SYSTEM KILL SESSION '12, 63'; E. When an inactive session is killed, the status of that session remains visible in VSSESSION with status KILLED. The rowf the terminated session is removed from VSSESSION after the user
- 4. The safer , easier way to help you pass any IT exams. 3 / 7 attempts to use the session again. F. You cannot terminate the inactive session. You have to wait until that session becomes active again. Answer: D,E,F Explanation: Reference: http://docs.oracle.com/cd/B28359_01/server.111/b28310/manproc008.htm#ADMIN11192 4.Which two statements are true about shared server sessions? A. No Program Global Area (PGA) is allocated for shared server processes. B. User Global Area is stored in System Global Area (SGA). C. Shared SQL Area is allocated from Program Global Area (PGA). D. Private SQL Area is allocated from Library Cache. E. Large Pool is used for SQL work areas. Answer: D Explanation: Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14220/memory.htm (see library cache) 5.Which targets can be managed by using Enterprise Manager Cloud Control? A. Hosts and databases B. Hosts, databases, and application servers C. Application servers and web applications D. Databases, Oracle Management Server (OMS), and Oracle Management Repository (OMR) E. Databases, application servers, and web applications F. Hosts, databases, application servers, web applications, OMS, and OMR Answer: A Explanation: Reference: http://www.oracle.com/technetwork/oem/framework-infra/wp-em12c-security-best- practicesv2-1493383.pdf (page 3, second bulleted point, last couple of sentences) 6.Which two statements are true regarding SQL*Plus? A. It has commands for performing database administration operations. B. It can be used in interactive but not batch mode for SQL commands. C. It has to be installed separately after the Oracle Database 12c installation. D. Operating system commands can be executed from the SQL*Plus command prompt. Answer: A Explanation: Reference: http://docs.oracle.com/cd/B14117_01/server.101/b12170/qstart.htm 7.Which two statements about the Process Monitor (PMON) process are true? A. PMON performs process recovery when a client process fails. B. During instance startup, PMON takes care of instance recovery. C. PMON performs listener registration. D. PMON restarts background and dispatcher processes when they fail. E. PMON resolves failures of distributed transactions.
- 5. The safer , easier way to help you pass any IT exams. 4 / 7 Answer: A,C 8.Which statement is true about loading data by using the conventional path of SQL*Loader? A. Redo is not generated while performing conventional path loads. B. Only PRIMARY KEY, UNIQUE KEY, and NOT NULL constraints are checked, C. No exclusive locks are acquired when the conventional path loads are performed. D. Instead of performing transactions, SQL*Loader directly writes data blocks to the data files. E. INSERT triggers are disabled before the conventional path load and re-enabled at the end of the load. Answer: B Explanation: Reference: http://docs.oracle.com/cd/A57673_01/DOC/server/doc/SUT73/ch8.htm#data%20paths (see direct loads, integrity constraints, and triggers) 9.Identify three key properties of a transaction in Oracle Database 12c. A. durability B. consistency C. concurrency D. isolation E. scalability F. manageability Answer: A,B,D Explanation: Reference: http://docs.oracle.com/cd/E16655_01/server.121/e17633/transact.htm#CNCPT016 10.Which type of file system is NOT valid for storing data files, online redo log files, and control files for a pluggable database? A. Automatic Storage Management (ASM) B. OS file system C. logical volume (LVM) D. clustered file system E. RAW Answer: E 11.Which two statements about ADDM are true? A. Real-Time ADDM uses AWR snapshots of the last 10 minutes. B. Real-Time ADDM uses ASH recent activity from SGA data. C. Real-Time ADDM analyzes performance in a completely different fashion than regular ADDM. D. Regular ADDM uses AWR snapshots that are not yet purged. Answer: C 12.Which two items are key for maintaining data consistency in Oracle Database 12c? A. undo data B. isolation level C. lock mechanism
- 6. The safer , easier way to help you pass any IT exams. 5 / 7 D. serializability Answer: C Explanation: Reference: http://docs.oracle.com/cd/E11882_01/server.112/e25789/consist.htm#CNCPT88969 (overview of the oracle database locking mechanism) 13.You are about to install Oracle Database 12c Enterprise Edition. Which statement is true? A. You should not install the Oracle Database software into an existing Oracle home from a different release. B. A multitenant container database (CDB) can have several pluggable databases (PDBs) with different character sets. C. Oracle recommends that you back up the root. sh script after you complete the installation. D. Cloning an Oracle home is useful if you are performing multiple Oracle Database Installations. E. You can stop existing Oracle processes, including the listener and the database running in the Oracle home, before the database software installation. Answer: E 14.Which logical storage relationship is correct? A. Tablespace< Segment < Extent < Oracle Datablock B. B) Segment < Extent < Oracle Datablock<Tablespace C. Tablespace< Extent < Segment < Oracle Datablock D. Data File <Tablespace< Segment < Extent < Oracle Datablock Answer: A Explanation: Reference: http://www.dummies.com/how-to/content/basics-of-logical-structures-in-oracle12c.html 15.Which two statements about multitenant architecture are true? A. Multiple PDBs on a single server need multiple database instances and multiple sets of database files. B. Although consolidated into a single physical database, PDBs mimic the behavior of non-CDBs. C. A PDB administrator can use Oracle Flashback or point-in-time recovery to retrieve lost data from a PDB, only by shutting down all the PDBs from the CDB. D. It is easier to collect performance metrics for many databases in a CDB than individual non-CDB databases. E. It takes more time to apply a patch to one CDB that holds hundreds of PDBs than to hundreds of non-CDB databases. Answer: D 16.Which three statements represent the benefits of multitenant architecture for database consolidation? A. You can unplug a PDB from a development CDB and plug it into a production CDB, which allows for easier and more rapid movement of data and code. B. You can consolidate shared database memory by combining multiple PDBs in a single CDB. C. Patching individual PDBs requires the same amount of time as patching individual databases. D. Consolidating separate databases into a single CDB requires the same amount of storage allocation.
- 7. The safer , easier way to help you pass any IT exams. 6 / 7 E. In multitenant architecture, a PDB behaves the same as a non-CDB as seen from a client connecting with Oracle Net. No client modification is required. Answer: E Explanation: Reference: http://docs.oracle.com/cd/E16655_01/server.121/e17633/cdbovrvw.htm#CNCPT89239 17.Which statement about the Oracle Advanced Security Data Redaction feature is true? A. It transparently encrypts data at rest in Oracle databases. B. It securely manages encryption keys. C. It protects against theft or loss of disks and backups. D. It prevents OS users from inspecting tablespace files. E. It limits the exposure of sensitive data in applications. F. It alters data in caches, buffers, and persistent storage. G. It impacts operational activities such as backup & restore, upgrade & patch, and replication. Answer: A,B,C Explanation: Reference: http://www.oracle.com/technetwork/database/options/advanced-security/advanced- Security-ds-12c-1898873.pdf 18.Which three statements about Automatic Database Diagnostic Monitor (ADDM) are true? A. It requires the database to be open. B. It analyzes the performance of specified objects. C. It implements all recommendations automatically. D. It recommends solutions and quantifies expected benefits. E. It retains snapshots in the SYSAUX tablespace until the database is restarted. F. It analyzes the snapshots stored in the Automatic Workload Repository (AWR). Answer: B,D,F Explanation: Reference: http://docs.oracle.com/cd/B19306_01/server.102/b14211/diagnsis.htm 19.Which is the default port number for Database Express? A. 7801 B. 5500 C. 2243 D. 1521 E. 22 Answer: D Explanation: Reference: http://docs.oracle.com/cd/B25329_01/doc/install.102/b25143.pdf (page 4, first bulleted point) 20.Your customer is looking for a solution to address these downtime needs: - Online addition and removal of disks should automatically rebalance data across new storage configurations while storage, database, and applications remain online. - Dynamically add or remove clustered nodes without disrupting the database or applications.
- 8. The safer , easier way to help you pass any IT exams. 7 / 7 - Automate the sizing and distribution of shared memory. - Add a column with a default value without disrupting the database or applications. - Perform rolling patch upgrades. Which four would you recommend to address those needs? A. Automatic Storage Management (ASM) B. Online Data and Application change C. Global Data Services (GDS) D. Real Application Clusters (RAC) E. Oracle Streams F. Online Table Redefinition G. Oracle Database Vault Answer: A,C,D,E