ORA-19955: only one open thread is allowed to change the DBID ORACLE 报错 故障修复 远程处理

文档解释

ORA-19955: only one open thread is allowed to change the DBID

Cause: The operation failed because there were active threads in the database. The most likely cause is that the database crashed the last time it was shut down.

Action: Ensure that all threads are closed before retrying the operation. Start and open the database to perform crash recovery, then shut down with the NORMAL or IMMEDIATE options to close it cleanly. Finally, try running the utility again.