RE: SEGMENT SPACE MANAGEMENT AUTO hangs on 9.2.0.4 on Linux

Tanel is right. An unkillable process represents one that is in an interruptible wait context on system response (i.e. a system call). If you waited long enough, it would probably return (or the box would crashed). What's an indication of a real hung process/serious kernel bug is where the process is waiting on something, but the kernel isn't servicing it anymore.  

Thanks,
Matt  

--
Matthew Zito
GridApp Systems
Email: mzito_at_gridapp.com
Cell: 646-220-3551
Phone: 212-358-8211 x 359
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-----Original Message-----
Tanel Poder
Sent: Monday, September 29, 2003 11:55 AM
To: Multiple recipients of list ORACLE-L


Hi!
 
If your server process couldn't be even killed, then probably it was waiting
on kernel IO or smth like that. This is a case when a process can't be
killed just like that, even with -9.
 
I assume you already tried to isolate the problem, by creating smaller file
or removing auto segment space management clause?
 
Tanel.
 

----- Original Message ----- 
To: Multiple recipients of list ORACLE-L <mailto:ORACLE-L_at_fatcity.com>  
Sent: Monday, September 29, 2003 5:44 PM

I have RDBMS 9.2.0.4 on RH 7.3 and I executed the following command:
 
create tablespace wizard
datafile '/oradata/WIZ/wizard01.dbf' size 3072M reuse
autoextend on next 1024M maxsize 16385m
extent management local autoallocate
segment space management auto;
 
The whole system just hung, doing I/O like crazy.  I was unable to killl one
of the server processes
which survived even shutdown abort, so I had to bounce thw whole box. No
errors, no traces, no
anything. Does anybody else have experience with this? Is there a known bug


(not currently known

to me)  with a patch that I can install? I'd really like to use "SEGMENT
SPACE MANAGEMENT AUTO"
and forget about pctfree/pctused stuff. 
 
--
Mladen Gogala
Oracle DBA 

 
 
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Author: Matthew Zito
  INET: mzito_at_gridapp.com

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