ORA-29740: evicted by instance number string, group incarnation string ORACLE 报错 故障修复 远程处理
文档解释
ORA-29740: evicted by instance number string, group incarnation string
Cause: This instance was evicted from the group by another instance of the cluster database group for one of several reasons, which may include a communications error in the cluster and failure to issue a heartbeat to the control file.
Action: Check the trace files of other active instances in the cluster group for indications of errors that caused a reconfiguration.
ORA-29740: evicted by instance number string 是Oracle数据库组报错,要将报错信息中提到的:instance number string callback 返回参数检测,确认该信息是否有效。
官方解释
这错误常在以下场景中出现:由于组内存在多个实例,每个实例可能拥有不同的incarnation同时考虑每个instance之间连接延迟;其中一个或多个实例被evicted,当组连接检测发现这样的instance时,会抛出此错误。
常见案例
1.在执行ASM实例变更时,选择DISMOUNT DISKGROUP,在某台服务器host_1操作,同时其它服务器host_2断网,可能会出现此错误。
2.当某个实例挂载了同一个组但其incarnation与其它实例不一致时,会抛出此错误。
一般处理方法及步骤
1.先把网关连接回正常,重新挂载ASM磁盘组,把host_2服务器正确添加到组中,确保incarnation一致,重新激活ASM组。
2.确保所有实例incarnation一直,如果不一致,请根据文档结合报错信息,解决报错问题。