多项选择题
A.The listener hands the connection request directly to a dispatcher.
B.A dedicated server inherits the connection request from the listener.
C.The client connects to a dedicated server directly using a protocol address provided by the listener.
D.The application initiating the session spawns a dedicated server process for the connection request.
E.The listener issues a redirect message to the client, containing the protocol address of a dispatcher. The client then terminates the network session to the listener and establishes a network session to the dispatcher, using the network address provided in the redirect message.
单项选择题 Twodatafileshavebeendeletedattheoperatingsystemlevelbyaccident.YourdatabaseisrunninginARCHIVELOGmodeandonlinebackupsaretakennightly.OneofthedatafilesthathasbeendeletedbelongstotheUSERStablespaceontheotherbelongstotheSYSTEMtablespace.Howcanyourecoverfromthissituation？（）
单项选择题 YourcompanydecidedtostartusingRMANinitsbackupstrategy.Previouslyyourcompanyusedoperatingsystemfilecopies.WhichcommandisusedtomakeRMANawareofexistingbackupsmadebycopyingfilesattheoperatingsystem？（）
单项选择题 Theclientconnectedtothedatabaseturnsoffhisorhermachinewithoutexitingfromaconnectiontothedatabase.Whichtypeoffailureisthis？（）