Oracle-L: RE: Oracle hangs...Oracle 8.1.7.3 and Solaris 2.7

From: <Brian_P_MacLean_at_eFunds.Com>
Date: Tue, 19 Mar 2002 09:33:27 -0800
Message-ID: <F001.0042D5C8.20020319093327@fatcity.com>

I feel your pain. Your problem is exactly the same thing we experience at my last job with Oracle versions 8.1.5 -> 8.1.7.2. Support could not define the reasons around the hang but said it was fixed in 8.1.7.3 and 9i. Is it just me, or is something wrong with that statement. Can't explain why it freezes, but knows it's fixed in the next version. Hmmmmmmmm.

There is a method of taking dumps when you can't connect to Oracle by using dbx (source-level debugging tool). See -> http://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=121779.1 (Taking Systemstate Dumps when You cannot Connect to Oracle)

Good luck and may the force be with you (your gonna need it!!)

Brian P. MacLean
Oracle DBA, OCP8i

                                                                                                              
                    "Grabowy,                                                                                 
                    Chris"               To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>  
                    <cgrabowy_at_fcg.       cc:                                                                  
                    com>                 Subject:     RE: Oracle hangs...Oracle 8.1.7.3 and Solaris 2.7       
                    Sent by:                                                                                  
                    root_at_fatcity.c                                                                            
                    om                                                                                        
                                                                                                              
                                                                                                              
                    03/19/02 07:58                                                                            
                    AM                                                                                        
                    Please respond                                                                            
                    to ORACLE-L

Here is the latest on the Oracle hangs issue from the DBA working it...

In 8.1.7.2 we had frequent crashes, and Oracle told us to upgrade to 8.1.7.3
to solve that. The crashes then turned into these hangs. The problem is our hangs are total freezes - we can't log on, we can't do anything with sessions already logged on - nothing. That means we are not able to run Statspack or Hanganalyze or anything like that help us figure out what's causing it. If you have any other ideas we're open to anything.

Thanks
Reed

-----Original Message-----

Sent: Monday, March 18, 2002 1:28 PM
To: Multiple recipients of list ORACLE-L

We have a particular database that hangs on a regular basis. Here are the stats and symptoms.

Oracle stats

8.1.7.3 (highest patch level applied)
Solaris 2.7
UTF8 character set

Symptoms

Random hanging.

     Hanging meaning SQL processing stops.
     New connections "hang".

No traces files.
No messages in the alert log.
Killing the Oracle processes is the only way to recover from the problem.

This problem has been reported to Oracle Support, they are now escalating it
up.

I just wanted to PING the list to see if anyone else has encountered this.

TIA!!! Chris
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Author: Grabowy, Chris
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