The retention period to support flashback
The expected length of the longest-running query
The number of undo tablespaces in the database
The size of the Flash Recovery Area for the database instance
第1题:
You work as a database administrator for Certkiller .com. You received the following error while working on your database: ORA-01555: snapshot too old In which situation would you receive such an error?()
第2题:
You work as a database administrator for Certkiller .com. Your database is functional. One of the disks containing a mirrored redo log member has bad sectors in it. You are unable to fix the damaged file. How does the loss of a redo log member affect the instance of the database that is currently running?()
第3题:
A. Oracle Net Manager
B. Listener Control utility
C. Database Configuration Assistant
D. Oracle Net Configuration Assistant
第4题:
Which two prerequisites are needed for performing workload capture and replay?()
第5题:
Your database instance is running with full workload after database creation. You have decided to useafixed-sizeundo tablespace. You want to use the Undo Advisor to estimate the capacity of the undotablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace()
第6题:
The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings, workload profile,and statistics to diagnose the possible causes of the performance degradation?()
第7题:
Your database is running in ARCHIVELOG mode. The SCOTT.EMP table belongs to the DATA1 tablespace. The junior DBA erroneously runs a script that executes the following statement: SQL> DROP TABLE SCOTT.EMP PURGE; After one hour, you are performing the user managed incomplete recovery. Which datafiles will you restore from the last full backup?()
第8题:
After implementing full Oracle Data Redaction, you change the default value for the NUMBER data type as follows:After changing the value, you notice that FULL redaction continues to redact numeric data with zero.What must you do to activate the new default value for numeric full redaction?()
A. Re-enable redaction policies that use FULL data redaction.
B. Re-create redaction policies that use FULL data redaction.
C. Re-connect the sessions that access objects with redaction policies defined on them.
D. Flush the shared pool.
E. Restart the database instance
第9题:
You work as a database administrator for Supportcenter.cn. You added atablespaceto your database. Because of the changes to the physical structure of your database, you performed a backup of the control file to trace. After this, you lost only the control files and the instance aborted due to a hardware failure. How would you proceed to recover the database?()
第10题:
Your database is running under automatic undo management and the UNDO_RETENTION parameter is set to 900 sec. You executed the following command to enable retention guarantee: SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE; What effect would this statement have on the database?()