oracle 11g dataguard同步异常,PROTECTION_LEVEL为RESYNCHRONIZATION
起因:闪存区空间不足,导致DG出现异常。恢复正常后,发现主、备库DG状态PROTECTION_LEVEL均为RESYNCHRONIZATION,SQL>selectprotection_mode,protection_levelfromv$database;PROTECTION_MODEPROTECTION_LEVEL----------------------------------------