标题: ORA-01252: cannot prevent writes - file string in recovery manager backup [打印本页] 作者: admin 时间: 2016-7-15 17:05 标题: ORA-01252: cannot prevent writes - file string in recovery manager backup ORA-01252: cannot prevent writes - file string in recovery manager backup Cause: An attempt to make a tablespace read only or offline normal found that a
recovery manager proxy backup is in progress. If the file is made offline or
read-only, then the file header cannot be updated when the backup is complete. Action: Wait for the Recovery Manager backup to complete and retry this
command.