标签： ORACLE ORA-55563错误
ORA-55563: number is not a valid undo segment number ORACLE 报错 故障修复 远程处理
文档解释
ORA-55563: number is not a valid undo segment number
Cause: the given usn is not a valid one
Action: check undo$
ORA-55563：号码不是有效的……