oracle11g启动报错，startup nomount失败，后台alert报错日志以下：
[oracle@pldb1 dbs]$ more /oracle/app/oracle/diag/rdbms/pdunq/powerdes/trace/alert_powerdes.log Wed Feb 03 20:56:28 2016 Starting ORACLE instance (normal) .... dispatchers = "(PROTOCOL=TCP) (SERVICE=powerdesXDB)" audit_file_dest = "/oracle/app/oracle/admin/powerdes/adump" audit_trail = "DB" db_name = "powerdes" db_unique_name = "pdunq" open_cursors = 300 diagnostic_dest = "/oracle/app/oracle" Wed Feb 03 20:57:07 2016 PMON started with pid=2, OS id=7504 Wed Feb 03 20:57:07 2016 VKTM started with pid=3, OS id=7506 VKTM running at (100ms) precision Wed Feb 03 20:57:07 2016 GEN0 started with pid=4, OS id=7510 Wed Feb 03 20:57:07 2016 DIAG started with pid=5, OS id=7512 Wed Feb 03 20:57:07 2016 DBRM started with pid=6, OS id=7514 Wed Feb 03 20:57:07 2016 PSP0 started with pid=7, OS id=7516 Wed Feb 03 20:57:07 2016 DIA0 started with pid=8, OS id=7518 Wed Feb 03 20:57:07 2016 MMAN started with pid=9, OS id=7520 Wed Feb 03 20:57:07 2016 DBW0 started with pid=10, OS id=7522 Wed Feb 03 20:57:07 2016 LGWR started with pid=11, OS id=7524 Wed Feb 03 20:57:07 2016 CKPT started with pid=12, OS id=7526 Wed Feb 03 20:57:07 2016 SMON started with pid=13, OS id=7528 Wed Feb 03 20:57:07 2016 RECO started with pid=14, OS id=7530 Wed Feb 03 20:57:07 2016 MMON started with pid=15, OS id=7532 starting up 1 dispatcher(s) for network address "(ADDRESS=(PARTIAL=YES)(PROTOCOL=TCP))"... Wed Feb 03 20:57:07 2016 MMNL started with pid=16, OS id=7534 starting up 1 shared server(s) ... ORACLE_BASE from environment = /oracle/app/oracle PMON (ospid: 7504): terminating the instance due to error 822 Instance terminated by PMON, pid = 7504 [oracle@pldb1 dbs]$ [ora
