原来那个找不到文件的问题，今天咨询了熊哥，

SQL> oradebug setospid 578038

Oracle pid: 3, Unix process pid: 578038, image: oracle@orasrva (DIAG)

SQL> oradebug close_trace

Statement processed.

SQL> oradebug setinst all

Statement processed.

SQL> oradebug -g def hanganalyze 3

Hang Analysis in /oracle/admin/sptdi/bdump/sptdi1_diag_578038.trc

SQL> exit

Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

With the Partitioning, Real Application Clusters, Data Mining and Real Application Testing options

$ tail -10 /oracle/admin/sptdi/bdump/sptdi1_diag_578038.trc

END OF HANG ANALYSIS

====================

PORADATA SERIAL:0 RINST:2 RDIAG:287516

PORADATA SERIAL:0 RINST:2 REMOTE EXEC OSPID:287516

PORADATA SERIAL:0 RINST:2 TRACEFILE:/oracle/admin/sptdi/bdump/sptdi2_diag_287516.trc

PORADATA SERIAL:0 RINST:2 DONE

session (kjzddbx) is about to end

Registered session (kjzddbx)[11][4][0][1] is cleaned up

Switch to long timeout for ipc polling

因为在一个实例期间，一个进程产生的日志文件的名字是一样的

而原来产生的那个文件被我删除了，执行上面的步骤，文件就有了。
谢谢，熊哥。。

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