RE: sqlplus core dump for one database
Date: Fri, 22 Feb 2019 12:35:03 -0500
Message-Id: <5C7032C70200000B0005282E_at_groupwise2014.gcrta.org>
We did an strace and that reminded us of the banner so we eliminated and it then worked. We then put the banner back with one less line and still worked. So the question is what is the limititions on the banner. >>> Noveljic Nenad <nenad.noveljic_at_vontobel.com> 2/22/19 12:03 PM >>> Thank you for the feedback.
I don’t know about the max banner size.
But how did you figure out that it was the banner?
Nenad
http://nenadnoveljic.com/blog/
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From: Jeffrey Beckstrom <jbeckstrom_at_gcrta.org>
Sent: Freitag, 22. Februar 2019 17:56
To: Andy Sayer <andysayer_at_gmail.com>; Noveljic Nenad
<nenad.noveljic_at_vontobel.com>
Cc: oracle-l-freelist <oracle-l_at_freelists.org>
Subject: RE: sqlplus core dump for one database
We were using sec_user_audit_action_banner in our sqlnet.ora. We commented the line out, bounced the database and the error disappeared. Is there a maximum number of characters that can be in the file referenced by this entry?
Jeffrey Beckstrom
Lead Database Administrator
Information Technology Department
Greater Cleveland Regional Transit Authority
1240 W. 6th Street
Cleveland, Ohio 44113
>>> Noveljic Nenad <nenad.noveljic_at_vontobel.com> 2/22/19 10:43 AM >>> Lacking better options, I’d suggest “stracing” a good and a bad execution and compare the failed system calls.
Using this methodology, I recently resolved a problem with sqlplus where the sqlplus was reporting an NLS issue, whereas the problem was a failed “mprotect” system call, which in turn failed because of the filled swap on the client machine. But sqlplus, sadly, hasn’t captured this exception on the right spot to provide a meaningful error message.
The procedure is somewhat tedious, but it might yield a good result.
Nenad
http://nenadnoveljic.com/blog/
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From: Jeffrey Beckstrom <jbeckstrom_at_gcrta.org>
Sent: Freitag, 22. Februar 2019 15:44
To: Andy Sayer <andysayer_at_gmail.com>; Noveljic Nenad
<nenad.noveljic_at_vontobel.com>
Cc: oracle-l-freelist <oracle-l_at_freelists.org>
Subject: RE: sqlplus core dump for one database
All of that makes sense but we have multiple 12.2 databases running out of this home and only this one database is experiencing the problem. >>> Noveljic Nenad <nenad.noveljic_at_vontobel.com> 2/22/19 9:28 AM >>> sqlplus version is missing from the output, as well as the information whether the connection is bequeath or remote. In former case, some environment variables needs to be set if sqlplus is in a different home from the DB.
But if the sqlplus is the one delivered with the database and the remote connection (_at_DB) isn’t working properly, the next step could be to check whether sqlplus is dynamically linked with correct shared libraries. For this reason, I suggested to check the environment variables and possibly a utility like pldd.
Nenad
http://nenadnoveljic.com/blog/
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From: Andy Sayer <andysayer_at_gmail.com>
Sent: Freitag, 22. Februar 2019 15:16
To: Noveljic Nenad <nenad.noveljic_at_vontobel.com>
Cc: jbeckstrom_at_gcrta.org; oracle-l-freelist <oracle-l_at_freelists.org>
Subject: Re: sqlplus core dump for one database
“The functions further up on the steck begin afi* which, I think, are not Oracle server, but rather client functions:” afi is the advanced friendly interface, what sql*plus was supposedly initially called (hense afiedt.buf)
I suspect an old version of sql*plus running against a more recent DB server which no longer creates the table sql*plus uses to restrict usage of certain features. Client side security is obviously not the best of ideas.
Hope this helps,
Andy
On Fri, 22 Feb 2019 at 14:02, Noveljic Nenad <nenad.noveljic_at_vontobel.com> wrote:
The error was thrown in kghfre which is "kernel generic heap manager
free a chunk of memory" according tohttp://orafun.info/
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"Segmentation fault (core dumped)" probably tells us that a non-existent memory address was referenced during deallocation.
The functions further up on the steck begin afi* which, I think, are
not Oracle server, but rather client functions:
nm sqlplus | grep afi
[56] | 4197384| 0|FUNC
|GLOB |0 |UNDEF |afidrv
This leads me to conclusion that it's a client side issue. Therefore it works from another client - you mentioned Windows, but it doesn't have anything to do with the OS. You can try to connect from another Linux machine to verify that.
Please apologize the trivial question, but have you checked the environment variables of the sqlplus process, such as library path, nls etc and compare them with a working connection?
You can also execute a utilitiy like pldd (available on Solaris) on the sqlplus process to check whether correct library versions are linked.
Nenad
http://nenadnoveljic.com/blog/
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From:oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org>On
Behalf Of Jeffrey Beckstrom
Sent: Freitag, 22. Februar 2019 14:33
To: oracle-l-freelist <oracle-l_at_freelists.org>
Subject: sqlplus core dump for one database
000000000 ? 000000000 ?
000000000 ? 000000000 ?
aficex()+340 call afilof()
000000000 ? 000000000 ?
000000000 ? 000000000 ?
000000000 ? 000000000 ?
afiexi()+1086 call aficex() 000000000 ?
000000000 ?
000000000 ? 000000000 ?
000000000 ? 000000000 ?
aficmd()+2914 call afiexi() 000000000 ?
000000000 ?
000000000 ? 000000000 ?
000000000 ? 000000000 ?
aficfd()+3053 call aficmd() 000000000 ?
000000000 ?
000000000 ? 000000000 ?
000000000 ? 000000000 ?
aficdr()+151 call aficfd()
000000000 ? 000000000 ?
000000000 ? 000000000 ?
000000000 ? 000000000 ?
afidrv()+5950 call aficdr() 000000000 ?
000000000 ?
000000000 ? 000000000 ?
000000000 ? 000000000 ?
main()+105 call afidrv() 000000000 ?
000000000 ?
000000000 ? 000000000 ?
000000000 ? 000000000 ?
__libc_start_main() call main() 000000000 ?
000000000 ?
+245
000000000 ? 000000000 ?
000000000 ? 000000000 ?
Call stack signature: 0x1246f539b36d881
call stack performance statistics:
total : 0.010000 sec setup : 0.000000 sec stack unwind : 0.000000 sec symbol translation : 0.000000 sec printing the call stack: 0.010000 sec
printing frame data : 0.000000 sec
printing argument data : 0.000000 sec
- End of Call Stack Trace -----
Segmentation fault (core dumped)
[dbsorat08:~:tismask] $
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