多项选择题
Which two statements about the background process of thedatabase writerare true()
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.
相关考题
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单项选择题
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) -
单项选择题
Notethefunctionalitiesofvariousbackgroundprocesses: 1:Performrecoveryatinstancestartup.SMON 2:Freetheresourcesusedbyauserprocesswhenitfails.PMON 3:Cleanupthedatabasebuffercachewhenaprocessfails.PMON 4:Dynamicallyregisterdatabaseserviceswithlisteners.PMON 5:Monitorsessionsforidlesessiontimeout.PMON 6:Cleanupunusedtemporarysegments.SMON 7:Recordthecheckpointinformationincontrolfile.CKPT Whichoptionhasthecorrectfunctionalitieslistedforabackgroundprocess()
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 -
单项选择题
Notethefollowingfunctionalitiesofvariousbackgroundprocesses: 1:Record thecheckpointinformationindatafileheaders.CKPT 2:Performrecoveryatinstancestartup.SMON 3:Cleanupunusedtemporarysegments.SMON 4:Freetheresourcesusedbyauserprocesswhenitfails. 5:Dynamicallyregisterdatabaseserviceswithlisteners. 6:Monitorsessionsforidlesessiontimeout. Whichoptionhasthecorrectfunctionalitieslistedforabackgroundprocess()
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
