# 增量同步失败报错，关键词"ORA-01435: user does not exist, ORA-06512: at "SYS.DBMS_LOGMER"line 72: ORA-06512"或"ORA-16331: container 'HBYYDB' is not open ORA-06512: at 'SYS.DBMS_LOGMNR', line 58 ORA-06512: at line 1"
#### 场景描述
Oracle为源端数据库增量同步阶段报错，同步日志界面提示：ORA-01435: user does not exist, ORA-06512: at "SYS.DBMS_LOGMER"line 72: ORA-06512或ORA-16331: container 'HBYYDB' is not open ORA-06512: at 'SYS.DBMS_LOGMNR', line 58 ORA-06512: at line 1.
#### 可能原因
DRS同步源数据库Oracle为PDB时,需要保证源库PDB为全部打开（READ WRITE）状态。
#### 解决方案
请联系源数据库Oracle的运维人员打开PDB。