【ORA-00060】 deadlock detected while waiting for resource

昨天搭建DG，在使用rman在备库进行duplicate： RMAN>duplicate target database standby nofilenamecheck; 的时候，一直hang住，于是参看警报日志文件，发现如下错误信息： Errors in file /u01/app/oracle/diag/rdbms/sdb/orcl/trace/orcl_ora_8975.trc: ORA-00060: deadlock detected while waiting for resource Trace dumping is performing id=[cdmp_20150617065802] Wed Jun 17 06:58:04 2015 Errors in file /u01/app/oracle/diag/rdbms/sdb/orcl/trace/orcl_ora_8975.trc: ORA-00060: deadlock detected while waiting for resource Errors in file /u01/app/oracle/diag/rdbms/sdb/orcl/trace/orcl_ora_8975.trc: ORA-00060: deadlock detected while waiting for resource Trace dumping is performing id=[cdmp_20150617065806]
很明显是产生了死锁，于是查看造成当前死锁的会话： SQL>select sid,serial#,username from v$session where sid in(select blocking_session from v$session); SID    SERIAL#    USERNAME ------- ---------  ------------------ 17        15              HH
找到会话信息之后就可以直接kill掉这个session： SQL>alter system kill session '17,15' immediate;
接着，重新执行duplicate就可以了。

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