Youareoperatingyourdatabaseinthemanualarchivingmode.Currently，yourdatabaseisconfiguredwiththefollowingonlineredologgroupsandmembers：YoutriedtodropGroup1fromthedatabasebutreceivedthefollowingerrors：ORA-01623：log1iscurrentlogforthread1cannotdropORA-00312：on
题目
Youareoperatingyourdatabaseinthemanualarchivingmode.Currently，yourdatabaseisconfiguredwiththefollowingonlineredologgroupsandmembers：YoutriedtodropGroup1fromthedatabasebutreceivedthefollowingerrors：ORA-01623：log1iscurrentlogforthread1cannotdropORA-00312：onlinelog1thread1：’D：\ORACLE\ORADATA\TESTDB\REDO01a.LOG’Whatmightbethereasonfortheseerrors？（）
A.Group1isanactiveorcurrentonlineredologgroup.
B.Group1isaninactiveonlineredogroupthathasnotbeenarchivedyet.
C.ThemembersoftheGroup1aretemporarilyasymmetricwiththemembersofothergroups.
D.ThesizeoftheonlineredologmembersofGroup1isdifferentfromthesizeofthemembersinothergroups.