单项选择题
A.The sessions are able to perform only queries.
B.The sessions are not affected and continue to function normally.
C.The active transactions are rolled back and the sessions get terminated.
D.The sessions are not allowed to perform any operations till the listener is started.
单项选择题 Youcreatedaresponsefileandwanttocheckitbeforestartinginstallationsinsilentmode.YoustartedinstallationofOraclesoftwareininteractivemodebyprovidingtheresponsefile.Inthemiddleoftheinstallation，yourealizethatthebehavioroftheOracleUniversalInstaller（OUI）isnotconsistentwiththeresponsefile.Whatactionwouldyoutaketodetectthecauseofthisbehavior？（）
单项选择题 Youbackedupthecontrolfiletotrace.Whichstatementistrueaboutthetracefilegenerated？（）
单项选择题 User A executes the following command to update the TRANS table） SQL> UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code=’C005’； Before user A issues a COMMIT or ROLLBACK command， user B executes the following command on the TRANS table： SQl> ALTER TABLE trans MODIFY （tr_type VARCHAR2 （3））； What would happen in this scenario？（）