ORA-39105: Master process string failed during startup. Master error:
Cause: The master process whose name is listed failed during startup.
Action: Refer to any following error messages for possible actions. Also, check the trace log for the failed process, if one was created, to see if there is any additional information about the failure. Correct the error, if possible, and try the operation again. If the error occurs again, contact Oracle Customer Support and report the error.
ORA-39105: 这是一个Master进程启动时遇到的错误，主要是由于在数据库备份期间，存在损坏的数据文件或备份集无法恢复。
1. 从备份恢复克隆实例时遇到ORA-39105错误，可能原因是数据文件出现损坏，如损坏的备份集完全不能恢复，从备份中引导文件出错。
2. 手动重建队列表或索引表时缺少一个表空间等，也可能造成ORA-39105错误。
1.检查数据库文件，确定存在损坏的数据文件及原因；
2.运行RMAN命令，从备份中恢复损坏文件；
3.确认后缀为.dbf和.ctl的文件是否被恢复；
4.重启设置参数DISTRIBUTE_IN_MEMORY，然后再次引导文件；
5.确认引导文件是否成功。