Location of oracle database crash date time

Question

Hi,
After system crash happens and oracle database is recovered from system crash where can i find the entry in oracle which shows the time of system crash?
I tried the following to get the system crash date and time:
When i start auditing a user by logon and the user is logged on to system oracle creates an entry in dba_audit_session table for user logontime in TIMESTAMP column, but if the system crashes in between when the user is logged in to the system then no entry is made in LOGOFF_TIME column of dba_audit_session table.
in followin example orcl user is being audited by logon.
orcl logsin the system at time 11:36 am and my system crashes.
when orcl logsin again after instance recovery logoff_time is blank, and shows a new entry of orcl.
SQL > select username,to_char(timestamp,'dd-mm-yyyy hh:mi:ss'),to_char(logoff_time,'dd-mm-yyyy hh:mi:ss') from dba_audit_session where username like 'TMS' order by timestamp;
USERNAME TO_CHAR(TIMESTAMP,' TO_CHAR(LOGOFF_TIME
ORCL 16-10-2012 11:36:16
ORCL 16-10-2012 11:46:33
My aim is to get the date & time of database crash.

Answer 1

Hi;
As mention here the only way to check alert.log, If Asm avaliable you need also check asmlog and related log files.
If you have OSwatcher on your system you can also check what process or wha happend on your server too
PS:Please dont forget to change thread status to answered if it possible when u belive your thread has been answered, it pretend to lose time of other forums user while they are searching open question which is not answered,thanks for understanding
Regard
Helios