问题：单选题In your database instance， the user sessions are connected to the database server from the remote machines.You want to achieve the following for these users： 1. The user account must be locked after four unsuccessful login attempts. 2. The user must be prompted to change the password at regular intervals. 3. The user may not have more than three simultaneous sessions. 4. The user session must automatically be logged off if more than 10 minutes elapsed time used. How would you accomplish the above（）A By assigning profiles for the usersB By implementing Fine-Grained Auditing （FGA）C By granting a secure application role to the usersD By implementing the Database Resource Manager plan
Monday, September 23, 2024
问题：单选题Examine the commands executed in the following sequence： 1：SQL> CREATE ROLE mgrrole； 2：SQL> GRANT create user，select any table，connect，resource TO mgrrole； 3：SQL> GRANT select，update ON sh.sales TO mgrrole； 4：SQL> CREATE ROLE ceo IDENTIFIED BY boss； 5：SQL> GRANT mgrrole，drop any table，create any directory TO ceo； 6：SQL> GRANT ceo TO mgrrole； Which statement is true about the above commands（）A The commands execute successfully.B Command 6 produces an error because of circular role grant.C Command 5 produces an error because a role cannot be granted to another role.D Command 3 produces an error because the MGRROLE role already contains system privileges.E The table created by HR remains and HR still has the CREATE TABLE system privilege.F The table created by HR remains and HR can grant the CREATE TABLE system privilege to other users.
Thursday, December 19, 2024
问题：单选题The database instance has the following parameter setting： OS_AUTHENT_PREFIX = OPS$ OS_ROLES = FALSE REMOTE_OS_AUTHENT = FALSE REMOTE_OS_ROLES = FALSE TIMED_OS_STATISTICS = 0 You have a local operating system user SKD.You create a database user OPS$SKD， and then assign external authentication. The user OPS$SKD has theCREATE SESSION privilege. What would you achieve by the above process（）A The database user OPS$SKD will be able to administer the database.B The authentication detail for the database user OPS$SKD is recorded in the password file.C The local operating system user SKD will be able to access the database instance without specifying theusername and password.D The database user OPS$SKD has to login with the password of the local operating system user SKD toaccess the database instance.
Monday, November 25, 2024
问题：单选题You want to create a role to meet these requirements： 1：The role is to be protected from unauthorized usage. 2：The password of the role is not to be embedded in the application source code or stored in a table. Which method would you use to restrict enabling of such roles（）A Create the role with global authentication.B Create the role with external authentication.C Create the role as a secure application role.D Create the role as a password-protected role.E Create a role and use Fine-Grained Access Control （FGAC） to secure the role.
Sunday, July 14, 2024
问题：单选题You have executed this command to change the size of the database buffer cache： SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582； System altered. To verify the change in size， you executed this command： SQL> SHOW PARAMETER DB_CACHE_SIZE NAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 （4M） Why is the value set to 4194304 and not to 2516582（）A because 4194304 is the granule sizeB because 4194304 is the standard block sizeC because 4194304 is the largest nonstandard block size defined in the databaseD because 4194304 is the total size of data already available in the database buffer cache
Tuesday, November 7, 2023
问题：单选题You executed the command to create a password file in the database server： $ orapwd file=orapworcl entries=5ignorecase=N Which statement describes the purpose of the above password file（）A It records usernames and passwords of users when granted the DBA role.B It contains usernames and passwords of users for whom auditing is enabled.C It is used by Oracle to authenticate users for remote database administration.D It records usernames and passwords of all users when they are added to OSDBA or OSOPER operatingsystem groups
Wednesday, September 21, 2022
问题：多选题Which three descriptions are correct about the effects of the TRUNCATE command on a table（）AThe corresponding indexes for the table are also truncated.BDelete triggers on the table are fired during the execution of the TRUNCATE command.CThe child table is truncated when the TRUNCATE command is applied on the parent table.DThe high-water mark （HWM） is set to point to the first usable data block in the table segment.ENo undo or very little undo data is generated during the execution of the TRUNCATE command
Monday, June 3, 2024
问题：单选题User A executes the following command to drop a large table in your database：SQL> DROP TABLE trans； While the drop table operation is in progress， user B executes the following command on the same table：SQL> DELETE FROM trans WHERE tr_type=’SL’； Which statement is true regarding the DELETE command（）A It fails to delete the records because the records are locked in SHARE mode.B It deletes the rows successfully because the table is locked in SHARE modeC It fails to delete the records because the table is locked in EXCLUSIVE mode.D It deletes the rows successfully because the table is locked in SHARE ROW EXCLUSIVE mode.
Tuesday, May 7, 2024
问题：单选题These are points that describe the contents of different memory components: 1: Descriptive information or metadata about schema objects that are queried by using SQL statements 2: The run-time area for data manipulation language (DML) or data definition language (DDL) statements 3: Results of SQL queries and PL/SQL functions 4: Executable forms of SQL cursors, PL/SQL programs, and Java classes 5: The information necessary to reconstruct changes made to the database by a transaction Which of these will be stored in theShared Poolif the necessary configurations are done（）A 1 and 2B 2 and 5C 1，3，and 4D 3，4，and 5E 1，2，3，and 4
问题：多选题Which two statements are true about alerts（）AClearing an alert sends the alert to the alert history.BResponse actions cannot be specified with server-generated alerts.CThe nonthreshold alerts appear in the DBA_OUTSTANDING_ALERTS view.DServer-generated alerts notify the problems that cannot be resolved automatically and requireadministrators to be notified.
问题：单选题Which statement is true about the Manageability Monitor （MMON） background proces（）A It transfers statistics from memory to disk at regular intervals.B It coordinates the rebalance activity for disk groups when ASM is used.C It communicates with the Automatic Storage Management （ASM） instance on behalf of the databaseinstance.D It performs dynamic memory management when Automatic Shared Memory Management is enabledfor the database instance.
Wednesday, November 20, 2024
问题：单选题Automatic Shared Memory Management is disabled for your database instance. You realize that there arecases of SQL statements performing poorly because of repeated parsing activity， resulting in degradation ofperformance. What would be your next step to improve performance（）A Run the SQL Access AdvisorB Run the Memory Advisor for the sga.C Run the Memory Advisor for the pga.D Run the Memory Advisor for the shared pool.E Run the Memory Advisor for the buffer cache
问题：单选题To make audit information more productive， the DBA executes the following command before startingan audit operation： SQL> ALTER SYSTEM SET AUDIT_TRAIL=DB，EXTENDED SCOPE=SPFILE； Which statement is true regarding the audit record generated when auditing starts after restarting thedatabase（）A It contains only the plan for the SQL statement executed by the user.B It contains the SQL text executed by the user and the bind variables used with it.C It contains the plan and statistics associated with the SQL statement executed by the user.D It contains the plan for the SQL statement executed by the user and the bind variables used with it.
Monday, October 7, 2024
问题：多选题You execute this command to drop the ITEM table， which has the primary key referred in the ORDERS table：SQL> DROP TABLE scott.item CASCADE CONSTRAINTS PURGE； Which two statements are true about theeffect of the command（）ANo flashback is possible to bring back the ITEM table.BThe ORDERS table is dropped along with the ITEM table.CThe dependent referential integrity constraints in the ORDERS table are disabled.DThe dependent referential integrity constraints in the ORDERS table are removed.EThe table definition of the ITEM table and associated indexes are placed in the recycle bin
问题：单选题You are managing an Oracle Database 11g database with this backup strategy： - Every Sunday night， level 0 backup is performed. - On Monday night and subsequent days， level 1 incremental backup is performed. The backups are not cumulative incremental. Which statement about Monday’s backup is true（）A The backup contains all the used blocks.B The backup contains all the used and unused blocks.C The backup contains blocks that have changed since the last level 0 backup.D The backup contains blocks that have changed since the last level 1 backup taken last week.
问题：单选题The TRANS_SUMMARY table contains product-wise transaction details that get updated with every transactionin the system. Each row has cumulative transaction details of a single product and every product is identified bya product code， which is the primary key.As part of the archival process， the company wants to transfer therows in the TRANS_SUMMARY table to the TRANS_SUMMARY_DUP table at the end of every quarter of theyear. Along with existing products， the company deals with many new products during every quarter. Whichmethod is best suited for this quarterly data transfer（）A Using the MERGE commandB Using the SQL*Loader utilityC Using the correlated UPDATE commandD Using the INSERT command to perform bulk operation
Monday, November 11, 2024
问题：单选题Which is the correct description of a pinned buffer in the database buffer cache（）A The buffer is currently being accessed.B The buffer is empty and has not been used.C The contents of the buffer have changed and must be flushed to the disk by the DBWn process. D The buffer is a candidate for immediate aging out and its contents are synchronized with the block contents on the disk.
Friday, December 20, 2024
问题：多选题A database user SMITH tries to query the V$SESSION view and fails to access it as follows： SQL> connect smith/smith Connected. SQL> SELECT * FROM v$session； SELECT * FROM v$session * ERROR at line 1： ORA-00942： table or view does not exist Which are the two possible solutions to enable SMITH to query the data in V$SESSION（）Agranting SELECT privilege to SMITH on V$SESSIONBgranting SELECT privilege to SMITH on V_$SESSIONCasking the user SMITH to run the catalog.sql scriptDgranting SELECT privilege to SMITH on V$FIXED_TABLESEsetting the O7_DICTIONARY_ACCESSIBILITY parameter to TRUEFcreating a view based on V$SESSION and granting SELECT privilege to SMITH on the view that was created
Tuesday, October 10, 2023
问题：单选题You want to import schema objects of the HR user using Oracle Data Pump from the development database，DEVDB， to the production database， PRODDB. A database link devdb.us.oracle.com is created betweenPRODDB and DEVDB. You execute the following command on the PRODDB database server：$ impdp system/manager directory = DB_DATAdumpfile = schemas.datschemas = hr flashback_time = "TO_TIMESTAMP（’25-08-2007 14：35：00’， ’DD-MM-YYYY HH24：MI：SS’）"The command fails displaying the following error：ORA-39001： invalid argument valueORA-39000： bad dump file specification ORA-31640： unable to open dump file "/home/oracle/schema/schemas.dat" for read ORA-27037： unable toobtain file status What would you do to overcome the error（）A Add the user， SYSTEM， to the schemas option.B Add the network_link = devdb.us.oracle.com option.C Change the dumpfile option to schema.dat@devdb.us.oracle.com.D Replace the schemas option with the network_link = devdb.us.oracle.comE Replace the dumpfile option with the network_link = devdb.us.oracle.com
Monday, January 22, 2024
问题：多选题You receive complaints from users regarding the high waiting time for their transactions. Oninvestigation， you find that some users are not committing their transactions though they are notperforming any activity for a long time. As a result， SQL statements need to wait for row-level locks. Which two actions could you take to prevent this locking problem in the future（）ADecrease the IDLE_TIME resource limit in the profile assigned to the blocking users.BUse Database Resource Manager to automatically log out sessions that block others and are idle.CSet the limit in the profile of blocking users to control the number of blocks to be accessed in a session.DDecrease the maximum number of interested transaction list （ITL） slots for the segments on which the blocking user performs the transaction
