ORA-02050、ORA-10382错误

[拎高]

ORA-02050、ORA-10382错误
错误日志：
Mon Mar 25 08:47:36 GMT+08:00 2013ARC1: Becoming the heartbeat ARCH
Mon Mar 25 08:47:36 GMT+08:00 2013SMON: enabling cache recovery
Mon Mar 25 08:47:39 GMT+08:00 2013Successfully onlined Undo Tablespace 1.
Mon Mar 25 08:47:39 GMT+08:00 2013SMON: enabling tx recovery
Mon Mar 25 08:47:39 GMT+08:00 2013Database Characterset is ZHS16GBK
Opening with internal Resource Manager plan
replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
QMNC started with pid=40, OS id=2556302
Mon Mar 25 08:47:42 GMT+08:00 2013Completed: ALTER DATABASE OPEN
Mon Mar 25 08:47:43 GMT+08:00 2013SMON: Restarting fast_start parallel rollback
Mon Mar 25 08:47:48 GMT+08:00 2013Error 10382 trapped in 2PC on transaction 69.20.6834365. Cleaning up.
Error stack returned to user:
ORA-02050: transaction 69.20.6834365 rolled back, some remote DBs may be in-doubt
ORA-10382: parallel query server interrupt (reset)Mon Mar 25 08:47:48 GMT+08:00 2013DISTRIB TRAN ODSC.73b7ab12.69.20.6834365
is local tran 69.20.6834365 (hex=45.14.6848bd)
insert pending collecting tran, scn=13229802586618 (hex=c08.4daf01fa)
Mon Mar 25 08:47:48 GMT+08:00 2013DISTRIB TRAN ODSC.73b7ab12.69.20.6834365
is local tran 69.20.6834365 (hex=45.14.6848bd))
delete pending collecting tran, scn=13229802586618 (hex=c08.4daf01fa)
Mon Mar 25 08:48:24 GMT+08:00 2013SMON: Parallel transaction recovery tried
Mon Mar 25 08:53:03 GMT+08:00 2013Thread 1 advanced to log sequence 186395 (LGWR switch)


Error stack returned to user:
ORA-02050: transaction 69.20.6834365 rolled back, some remote DBs may be in-doubt
ORA-10382: parallel query server interrupt (reset)
这是什么错误？是什么原因造成的？