Hang Analysis On Hung Database

I need to run the oradebug hanganalyze  when our database hangs.  I want to:
conn / as sysdba
 oradebug setmypid
 oradebug hanganalyze 3
... Wait at least 2 minutes to give time to identify process state changes.
 oradebug hanganalyze 3
... Wait at least 2 minutes to give time to identify process state changes.
 oradebug dump systemstate 266

Problem is the database hangs at the first step (conn / as sysdba)
Is there a way of getting around that?
xoxomosAsked:
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sventhanCommented:
try this ...
sqlplus -prelim / as sysdba
0
sventhanCommented:
You can try these 2 options ....

option1
=======
sqlplus -prelim / as sysdba

option2
========
sqlplus /nolog
set _prelim on
connect / as sysdba
0

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xoxomosAuthor Commented:
Thanx
0
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