A user executes a query on the EMP table， which contains thousands of rows， to get details about employees in one of the departments. The user receives the following error： SQL> SELECT ename FROM emp WHERE deptno=10 ORDER BY sal; SELECT ename FROM emp WHERE deptno=10 ORDER BY sal
*
ERROR at line 1：
ORA01157： cannot identify/lock data file 201 see DBWR trace file
ORA01110： data file 201： ’/u01/app/oracle/oradata/orcl/temp01.dbf’
What is a possible reason？（）
A.The tempfile belonging to the default temporary tablespace is missing.
B.The database is opened in restricted mode， so queries are not allowed.
C.The default temporary tablespace required to execute the query is offline.
D.The default temporary tablespace required to execute the query is dropped.
E.The default temporary tablespace required to execute the query is readonly.
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A.The database opens normally.
B.The database prompts for a database recovery.
C.The database writer writes to a trace file， indicating that the temporary file is not found.
D.The database gets mounted and throws an error indicating that the temporary file requires recovery.
A.It would result in an error because the warning threshold cannot be more than the critical threshold.
B.The warning threshold is ignored and alerts would be generated when space usage exceeds the critical threshold.
C.The critical threshold is ignored and alerts would be generated when space usage exceeds the warning threshold.
D.Both threshold values are used and alerts are generated when space usage exceeds the respective threshold values.
Users are performing a large volume of inserts and deletes on the application tables in the APPS tablespace. You observe that there are several warning alerts being generated for the APPS tablespace space usage metrics. Currently， the warning threshold for the tablespace space usage metrics is set to 70%.
To make the generated alerts more useful as a problem identification tool， you want to reduce the frequency of alert generation for the tablespace space usage metrics for the APPS tablespace. What should you do？（）
A.disable SQL tracing for theAPPS tablespace
B.disable logging attribute for the APPS tablespace
C.modify the tablespace to be a dictionarymanaged tablespace
D.increase the critical threshold value for the tablespace space usage metrics for the APPS tablespace
E.increase the warning threshold value for the tablespace space usage metrics for the APPS tablespace
A.the alert log file
B.the core dump files
C.the change tracking file
D.the user session trace files
E.the database audit trail files
F.the background process trace files
In your test database， you find that a user’s session is executing a lot of SQL statements， resulting in the generation of a large number of trace files. While investigating the reason， you find that SQL trace has been enabled at the instance level.
You want to disable SQL trace， remotely， only for that user session to reduce the volume of trace data being generated.
How do you achieve this objective？（）
A.by setting the SQL_TRACE parameter to FALSE in the parameter file
B.by using DBMS_MONITOR.SESSION_TRACE_DISABLE to disable the tracing for the user session
C.by setting the SQL_TRACE parameter to FALSE by using the ALTER SYSTEM command in the user session
D.by setting the SQL_TRACE parameter to FALSE by using the ALTER SESSION command in the user session
A.fixed views
B.the alert log file
C.the parameter file
D.the server parameter file
E.dynamic performance views
The backup retention policy is configured as RECOVERY WINDOW 2. You executed the following command in Recovery Manager （RMAN） against your database：
RMAN> REPORT OBSOLETE;
What would you see in the output？（）
A.a list of all the expired backups and copies
B.a list of all those files that have been deleted in the last two days
C.a list of all those files that have been recovered within the last two days
D.a list of backups and copies that are outside the range covered by the current retention policy
A.backups that can be deleted
B.stored scripts in the recovery catalog
C.backup sets and image copies that are obsolete
D.only the most recent backup sets or image copies
E.backups that do not have the AVAILABLE status in RMAN repository
You executed the following command in Recovery Manager （RMAN） against your Oracle 10g database：
RMAN> REPORT NEED BACKUP days 3;
What would be the output of this command？（）
A.a list of files that require a backup within three days
B.a list of files that have not been backed up for three days
C.a list of files that RMAN recommends be backed up only once in every three days， based on low volatility
D.a list of files for which a backup has already been performed and may need a backup after three days
A.data file
B.password file
C.archivelog file
D.temporary file
E.online redo log file
F.the current control file
G.the tnsnames.ora file
H.current server parameter file
最新试题
You have only two redo log groups and these groups get overwritten several times in a day. Your database operates in NOARCHIVELOG mode and usermanaged consistent backups are performed every Sunday night. On Thursday morning， you find that an important table has been dropped and purged. With reference to this scenario， up to what point in time can the data be recovered？（）
One of the tablespaces is readonly in your database. The loss of all control files forced you to recreate the control file. Which operation do you need to perform after recreating the control file and opening the database？（）
Every Sunday， consistent backups are performed on your database. Because of a user error， you performed an incomplete recovery on Tuesday and opened the database with the RESETLOGS option. A user error occurs again on Thursday， which necessitates an incomplete recovery. Sunday’s backup is the most recent backup available. What would you do in this scenario？（）
You decided to change the location of the flash recovery area. You executed the following command： Which statement is true？（）
On Tuesday， a junior DBA dropped an important application user account， whose schema has important tables. You are asked to recover all the objects in the schema. On investigation， you find that the user account was dropped at 11：00 a.m. and Sunday’s backup is the most recent backup. Which flashback feature would you use？（）
You enabled the flashback logging feature， but you have not specified the location of the flash recovery area. Which location would be used as the default location for the flash recovery area？（）
You lost the index tablespace in your database. You are not able to use tablespace pointintime recovery on the index tablespace. What could be the reason for this？（）
Your database operates in ARCHIVELOG mode and all the tablespaces are online. Due to a user error， you decided to perform an incomplete recovery. Which two tasks would you be required to perform in the recovery process？ （）
You used the following command in Recovery Manager （RMAN） as part of the recovery process： RESTORE CONTROLFILE FROM AUTOBACKUP; How does RMAN find the control file autobackup？（）
In your database， all the tablespaces are locally managed. You started Recovery Manager （RMAN） using recovery catalog. The following commands are used in the process of recovering the database by using the backup control file： In what sequence would you use this process to perform the recovery？（）