100%權威的新版1z0-076題庫上線，最好的考試指南幫助妳快速通過1z0-076考試為什麼大多數人選擇Fast2test，是因為Fast2test的普及帶來極大的方便和適用。是通過實踐檢驗了的，Fast2test提供 Oracle的1z0-076考試認證資料是眾所周知的，許多考生沒有信心贏得 Oracle的1z0-076考試認證，擔心考不過，所以你得執行Fast2test Oracle的1z0-076的考試培訓資料，有了它，你會信心百倍，真正的作了考試準備。 最新的 Oracle Database 19c 1z0-076 免費考試真題 (Q18-Q23):問題 #18
Suppose that you manage the following databases in your environment:
* boston: Primary database with a single PDB called DEVI
* london: Physical standby database protecting the PDB called DEVI
* orcl: Stand-alone database with a single PDB called PDB1 as a remote clone source You are planning to run the following command to create a remote clone in the primary database (boston) using pdbi in orcl:
Which are the THREE prerequisites for automating instantiation of the PDB in the standby database (london)?
A. Open PDBI (remote clone source) in Read Write.
B. Set STANDBY_PDB_SOURCE_FILE_DIRECTORY to <location of the PDB> in the london database.
C. Open PDBI (remote clone source) in Read Only.
D. Set standby_pdb_source_file_dblink to clone_link in the london database.
E. Set STANDBY_FILE_MANAGEMENT to auto in the london database.
F. Enable Active Data Guard in the _ondon database.
答案：B,C,E
解題說明：
To automate the instantiation of a PDB in the standby database after creating a remote clone in the primary database, certain conditions must be met:
* Open PDBI (remote clone source) in Read Only (A): The source PDB from which the clone is created must be open in read-only mode to ensure a consistent state during cloning.
* Set STANDBY_PDB_SOURCE_FILE_DIRECTORY to <location of the PDB> in the london database (C): This parameter specifies the location on the standby database where the files from the source PDB should be placed.
* Set STANDBY_FILE_MANAGEMENT to auto in the london database (F): This parameter automates the management of file changes on the standby database when structural changes occur on the primary database, ensuring that the clone operation is reflected automatically on the standby.
References:
* Oracle Multitenant Administrator's Guide
* Oracle Data Guard Broker documentation
問題 #19
The Oracle database 19c Observer is currently running on host1 and you wish to have it running on host2.
Examine this list of possible steps:
1) Stop the observer on host1
2) Disable Fast-Start Failover
3) Update the broker configuration with the new observer hostname
4) Enable Fast-Start Failover
5) Start the Observer on host2
Which contains the minimum required steps to move the observer to host2?
A. Execute tasks 1 and 5
B. Execute tasks 1, 2, 3, 4, and 5
C. Execute tasks 1, 3, and 5
D. Execute only task 5
答案：C
解題說明：
* Stop the Observer on host1 to ensure that there are no conflicts between the instances of the Observer running on different hosts.
* Update the Data Guard Broker configuration with the new hostname for the Observer. This step is crucial to redirect the Data Guard Broker to communicate with the Observer on the new host.
* Start the Observer on host2 to resume its operations in the new environment.
Disabling and re-enabling Fast-Start Failover (steps 2 and 4) are not strictly necessary for moving the Observer to a new host. These steps would be more relevant if changes to the configuration of Fast-Start Failover itself were required, which is not the case when simply relocating the Observer.
問題 #20
A customer asks for your recommendation regarding this requirement:
1. We plan to have a Data Guard Configuration with one primary database and one physical standby database.
2. We want zero data loss in case of a disaster involving the loss of one component.
3. We want to do Real Application Testing occasionally on the Standby Database.
Which solution, if any, satisfies these requirements?
A. These requirements cannot be met.
B. A snapshot standby database with real time query that can be converted regularly into a physical standby database open read write, to do real application testing
C. A physical standby database with synchronous redo transport that can be converted regularly into a snapshot standby to do real application testing
D. A far sync instance plus a snapshot standby database and real time apply that can be converted regularly into logical standby database to do real application testing
答案：C
解題說明：
* Synchronous redo transport for zero data loss (B): To guarantee zero data loss in the case of a disaster, synchronous redo transport must be configured between the primary and standby databases.
* Conversion to snapshot standby for testing (B): A physical standby database can be temporarily converted into a snapshot standby database to perform real application testing. After testing is completed, the snapshot standby can be converted back to a physical standby to resume its disaster recovery role.
References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Database Testing Guide
問題 #21
Which TWO statements are true about Far Sync instances?
A. They work in Maximum Performance mode.
B. They do not work with Snapshot Standby databases.
C. They work in Maximum Availability mode.
D. They do not work with Logical Standby databases.
E. They work in Maximum Protection mode.
答案：A,D
問題 #22
You are planning to perform block comparison using the dbms comp package:
Which TWO statements are true?
A. Logical standby databases can be the target database for the dbms_dbcomp.dbcomp procedure.
B. It can be used to detect lost writes and inconsistencies between the primary database and the cascaded standbys.
C. It requires that the DB_LOST_WKITE_protect initialization parameter be enabled.
D. You can monitor the progress of an ongoing block comparison operation by querying VS SES SION_LONGOPS.
E. The databases should be at least mounted before block comparison.
答案：D,E
解題說明：
The DBMS_COMPARISON package, used for comparing and converging data objects within a single database or between databases, requires that the databases involved in the block comparison be at least mounted (A). This allows the procedure to access the data blocks for comparison. Additionally, the progress of long-running operations such as block comparison can be monitored using the dynamic performance view V$SESSION_LONGOPS (D), which provides information on the operation's progress and estimated completion time.
References:Oracle Database PL/SQL Packages and Types Reference provides comprehensive details on the DBMS_COMPARISON package, including its procedures and how to monitor their progress. Additionally, Oracle Database Reference explains the V$SESSION_LONGOPS view, which is commonly used for monitoring long operations in the database.
