11GR2 issue: can not open the alert at same time.

there is not change when Viewing the alert with ultraedit.

And at same time the database operation is hang there.

Check the trace find the following issue:

*** 2010-12-27 15:47:07.968
** DBGRL Error: SLERC_OERC, 48180
** DBGRL Error: OSD-00001: 附加错误信息
O/S-Error: (OS 32) The process cannot access the file because it is being used by another process.
** DBGRL Error: Trace dumping is performing id=[cdmp_20101227154647]

*** 2010-12-27 15:47:09.375
Trace dumping is done

There is no such issue for 10G.