ORA-00445: background process " " did not start after 120 seconds

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alert报错如下：

Mon Dec 21 15:44:13 2015

Errors in file /u01/oracle/diag/rdbms/appserv/appserv/trace/appserv_cjq0_20223.trc (incident=27997):
ORA-00445: background process "J007" did not start after 120 seconds
Incident details in: /u01/oracle/diag/rdbms/appserv/appserv/incident/incdir_27997/appserv_cjq0_20223_i27997.trc

Mon Dec 21 15:44:21 2015

tace文件内容如下：

*** 2015-12-21 15:44:14.485
*** SESSION ID:(167.3) 2015-12-21 15:44:14.485
*** CLIENT ID:() 2015-12-21 15:44:14.485
*** SERVICE NAME:(SYS$BACKGROUND) 2015-12-21 15:44:14.485
*** MODULE NAME:() 2015-12-21 15:44:14.485
*** ACTION NAME:() 2015-12-21 15:44:14.485

Dump continued from file: /u01/oracle/diag/rdbms/appserv/appserv/trace/appserv_cjq0_20223.trc
ORA-00445: background process "J007" did not start after 120 seconds
========= Dump for incident 27997 (ORA 445) ========
----- Beginning of Customized Incident Dump(s) -----
-------------------------------------------------------------------------------
Trace Bucket Dump Begin: default bucket for process 29 (osid: 20223, CJQ0)
TIME(*=approx):SEQ:COMPONENT:FILE@LINE:FUNCTION:SECT/DUMP: [EVENT#:PID:SID] DATA
-------------------------------------------------------------------------------
2015-12-21 15:35:54.548642 :A98F919E:db_trace:ksb.c@1809:ksbcti(): [10254:29:167] KSBCTI: (CJQ0) : (interrupt action) : acnum=[108] comment=[Scumnt mount lock]
2015-12-21 15:35:54.548643 :A98F919F:db_trace:ksb.c@1809:ksbcti(): [10254:29:167] KSBCTI: (CJQ0) : (interrupt action) : acnum=[109] comment=[Poll system events broadcast channel]

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