A.The database can have more than one undo tablespace.
B.The UNDO_TABLESPACE parameter is valid in both automatic andmanualundo management.
C.Undo segments automatically grow and shrink as needed， acting as circular storage buffer for their assigned transactions.
D.An undotablespaceis automatically created if the UNDO_TABLESPACEparameter is not set and the UNDO_MANAGEMENT parameter is set to AUTO during the database instance start up.
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A.committing a transaction
B.flashing back a transaction
C.recovering a failed transaction
D.running a read-consistent query
E.changing a tablespace status from READ ONLY to READ WRITE
A.An extent cannot spread across data files.
B.A segment cannot spread across data files.
C.A data file can belong to only one tablespace.
D.A data file can have only one segment created in it.
E.A data block can spread across multiple data files as it can consist of multiple operating system （OS） blocks.
ote the following structures in your database server：
1：Extents
2：OS Blocks
3：Tablespace
4：Segments
5：Oracle Data Block
Which option has the correct arrangement of these structures from the smallest to the largest（）
A.2， 5， 1， 4， 3
B.1， 2， 3， 4， 5
C.5， 2， 1， 3， 4
D.2， 1， 5， 4， 3
A.external table
B.partitioned table
C.partitioned index
D.nonclustered table
E.global temporary table
A.Each segment contains one or more extents.
B.Multiple tablespaces can share a single data file.
C.A data block is the smallest unit of input/output （I/O） in data files.
D.It is possible to have tablespaces of different block sizes in a database.
E.Each data block in the database always corresponds to one operating system block.
You have set Tablespace Full Metrics Threshold values for the USERS tablespace as follows： Warning （%）： 90
Critical （%）： 95
Which background process is responsible for issuing alerts when the threshold is crossed（）
A.System monitor （SMON）
B.Process monitor （PMON）
C.Memory manager process （MMAN）
D.Manageability Monitor process （MMON）
A.It is possible to have multiple database writers in an Oracle instance.
B.It writes dirty buffers， if any， to data files whenever a checkpoint occurs.
C.It writes dirty buffers， if any， to data files whenever a transaction commits.
D.It writes dirty buffers， if any， to data files before the log writer （LGWR） writes.
View the Exhibit and identify the component marked with a question mark. （）
A.Checkpoint （CKPT）
B.Process Monitor （PMON）
C.Archiver Processes （ARCn）
D.Recoverer Process （RECO）
E.Memory Manager process （MMAN）
Note the functionalities of various background processes：
1：Perform recovery at instance startup. SMON
2：Free the resources used by a user process when it fails. PMON
3：Cleanup the database buffer cache when a process fails. PMON
4：Dynamically register database services with listeners. PMON
5：Monitor sessions for idle session timeout. PMON
6：Cleanup unused temporary segments. SMON
7：Record the checkpoint information in control file. CKPT
Which option has the correct functionalities listed for a background process（）
A.Checkpoint （CKPT）： 1， 2， 5
B.System Monitor （SMON）： 1， 6
C.Process Monitor （PMON）： 4， 6， 7
D.Database Writer （DBWR）： 1， 3， 4
Note the following functionalities of various background processes：
1：Record the checkpoint information in data file headers. CKPT
2：Perform recovery at instance startup. SMON
3：Cleanup unused temporary segments. SMON
4：Free the resources used by a user process when it fails.
5：Dynamically register database services with listeners.
6：Monitor sessions for idle session timeout.
Which option has the correct functionalities listed for a background process（）
A.Archiver Process （ARCn）：1， 2，5
B.System Monitor Process （SMON）：1，4，5
C.Process Monitor Process （PMON）：4，5，6
D.Database Writer Process （DBWn）：1，3，4
最新试题
Which statements are correct about temporary tables（）
Which statements regarding the server parameter file （SPFILE） are true（）
Which statement is true about loading data using the conventional path of SQL*Loader（）
Which kinds of failures make the Data Recovery Advisor （DRA） generate a manual checklist？（）
View the Exhibit. You are creating an additional database by using the Database Configuration Assistant（DBCA）. You opted to create a General Purpose database and during the database creation realize that theBlock Size field is not enabled. What could be the reason for this（）
Identify the situations in which you use the alert log file in your database to check the detail.（）
The session of user SCOTT receives the following error after executing an UPDATE command on the EMPtable：ERROR at line 1：ORA-00060： deadlock detected while waiting for resource On investigation， you find that a session opened byuser JIM has a transaction that caused the deadlock. Which two statements are true regarding the session ofSCOTT in this scenario（）
The user HR receives the following error while inserting data into the TTK table：ERROR at line 1：ORA-01653： unable to extend table HR.TTK by 128 in tablespace SMD Upon investigation， you find that SMDis a small file tablespace.Which three action would allow the user to insert data（）
Which statements are true about checkpointing（）
All the database users are presently connected to the database instance and working. The HR user hasopened three database sessions and executed the following command in one of his sessions：SQL> UPDATE persons SET ccode=’U031’ WHERE ccode=’U029’； 123 rows updated.SQL> DELETE FROM persons WHERE exp=’Y’；3 rows deleted.The SYS user opens a new session after HR executed the above commands. Which sessions can see theeffect of the UPDATE and DELETE commands（）