<div dir="ltr"><div>Hi Bogdan-Andrei, </div><div><br></div><div>It's aws mysql Aurora . AWS says the minor version of mysql server is zero downtime upgrade . So we didn't get any such message on the server side if all the connections got closed or what . </div><div>There is no error or notification on the server side . Other applications using the mysql SDK also run smoothly with this type of upgrade . </div><div><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><b><i>Thanks & Regards</i></b><div><i>Sasmita Panda</i></div><div><i>Senior Network Testing and Software Engineer</i></div><div><i>3CLogic , ph:07827611765</i></div></div></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Nov 11, 2025 at 4:18 PM Bogdan-Andrei Iancu <<a href="mailto:bogdan@opensips.org">bogdan@opensips.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<font face="monospace">Hi Sasmita,<br>
<br>
At steps (3) + (4), if the db conn is not reset (from the OpenSIPS
perspective), the statements are kept (of course). The question is
- did the mysql upgrade triggered the closing of all DB conns in
the mysql server?<br>
<br>
Regards,<br>
</font>
<pre cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a href="https://www.opensips-solutions.com" target="_blank">https://www.opensips-solutions.com</a>
<a href="https://www.siphub.com" target="_blank">https://www.siphub.com</a></pre>
<div>On 22.10.2025 16:15, Sasmita Panda via
Users wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Hi All , </div>
<div><br>
</div>
<div>Is there any update on this ? </div>
<div><br>
</div>
<div>Just to elaborate the error a bit , I have opensips running
on eks cluster nodes and multiple opensips nodes used to
connect to the same RDS (Aurora mysql). </div>
<div>On the RDS side there was a minor version upgrade from
<span style="color:rgb(15,20,26);font-family:"Amazon Ember","Helvetica Neue",Roboto,Arial,sans-serif;font-size:14px">8.0.mysql_aurora.3.07</span>
to <span style="color:rgb(15,20,26);font-family:"Amazon Ember","Helvetica Neue",Roboto,Arial,sans-serif;font-size:14px">8.0.mysql_aurora.3.08.2
. After upgrade when register request comes to opensips </span></div>
<div><span style="color:rgb(15,20,26);font-family:"Amazon Ember","Helvetica Neue",Roboto,Arial,sans-serif;font-size:14px">and
it goes to insert the data in the DB. It gives the above
error which I shared earlier . </span></div>
<div><span style="color:rgb(15,20,26);font-family:"Amazon Ember","Helvetica Neue",Roboto,Arial,sans-serif;font-size:14px"><br>
</span></div>
<div><b>CRITICAL:db_mysql:wrapper_single_mysql_stmt_execute:
driver error (1243): Unknown prepared statement handler (5)
given to mysql_stmt_precheck</b><span style="color:rgb(15,20,26);font-family:"Amazon Ember","Helvetica Neue",Roboto,Arial,sans-serif;font-size:14px"></span></div>
<div><b>ERROR:usrloc:db_insert_ucontact: inserting contact in db
failed","attributes</b></div>
<div><b>ERROR:usrloc:wb_timer: inserting contact into database
failed</b></div>
<div><b><br>
</b></div>
<div><b>As for my understanding : </b></div>
<div><span style="color:rgb(41,42,46);font-family:"Atlassian Sans",ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Ubuntu,"Helvetica Neue",sans-serif;font-size:14px">During
the Aurora mysql upgrade from 3.07 to 3.08.2 </span></div>
<div>
<ol style="margin:12px 0px 0px;padding:0px 0px 0px 24px;box-sizing:border-box;display:flow-root;color:rgb(41,42,46);font-family:"Atlassian Sans",ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Ubuntu,"Helvetica Neue",sans-serif;font-size:14px" start="1">
<li>
<p style="margin:0px;padding:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:1.714">All
old DB sessions are terminated and reset . </p>
</li>
<li style="margin-top:4px">
<p style="margin:0px;padding:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:1.714">The
Auro engine restarts and resets all session level state
. </p>
</li>
<li style="margin-top:4px">
<p style="margin:0px;padding:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:1.714">However
opensips SB driver (db_mysql) still holds references to
old prepared statement in an old connection pool . </p>
</li>
<li style="margin-top:4px">
<p style="margin:0px;padding:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:1.714">When
the connection is reused by opensips after upgrade ,
those handels does not exists anymore and hence → driver
Error 1243 appears in opensips logs (invalid prepared
statement and failed to insert data in the database ) .
</p>
</li>
<li style="margin-top:4px">
<p style="margin:0px;padding:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size-adjust:none;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:1.714">Once
we restarted the pods the connection pool from opensips
side also got reset and hence the issue got resolved . </p>
</li>
</ol>
</div>
<div><b><br>
</b></div>
<div><b>But restart is not suitable for live environment . So is
there any other option to recover this automatically . On
opensips module documentation for db_mysql </b></div>
<div><b>I am not getting any such parameter to set . Do I need
to update the mysql client version to ? Please suggest . </b></div>
<div><b><br>
</b></div>
<div>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr"><b><i>Thanks & Regards</i></b>
<div><i>Sasmita Panda</i></div>
<div><i>Senior Network Testing and Software Engineer</i></div>
<div><i>3CLogic , ph:07827611765</i></div>
</div>
</div>
</div>
</div>
</div>
<br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Oct 21, 2025 at
11:14 AM Sasmita Panda <<a href="mailto:spanda@3clogic.com" target="_blank">spanda@3clogic.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div>Hi All , </div>
<div><br>
</div>
<div>I am using opensips 3.4 running on EKS node and the
database is AWS RDS (<span style="color:rgb(15,20,26);font-family:"Amazon Ember","Helvetica Neue",Roboto,Arial,sans-serif;font-size:14px">8.0.mysql_aurora.3.08.2</span>)
. </div>
<div><br>
</div>
<div>In the config I am using sql_only mode to save/extract
data from the database . </div>
<div><br>
</div>
<div>loadmodule "usrloc.so"<br>
modparam("usrloc", "nat_bflag", "NAT")<br>
modparam("usrloc", "working_mode_preset", "sql-only")<br>
modparam("usrloc", "db_url",
"mysql://mysql-user:mysql-pass@mysql-domain/dbname")<br>
modparam("usrloc", "use_domain", 1)<br>
modparam("usrloc", "max_contact_delete", 1)<br>
<br>
</div>
<div> if ($rm=="REGISTER") {<br>
xlog( "L_NOTICE", "Register Contact & $ct \n" );<br>
fix_nated_register();<br>
if(!save("location","force-registration,max-contacts=10,path-lazy"))<br>
sl_reply_error();<br>
exit;<br>
}<br>
<br>
</div>
<div><br>
</div>
<div>Below is the error I am getting in the opensips logs : </div>
<div><br>
</div>
<div>2025-10-20 00:30:03.120 <br>
{"body":"Oct 19 19:00:03 [36] NOTICE:Register Contact
\u0026
\<a href="mailto:u003csip:hbh3a766@192.168.33.49:57670;transport=wss%5Cu003e;expires=90" target="_blank">u003csip:hbh3a766@192.168.33.49:57670;transport=wss\u003e;expires=90</a>","attributes":{"log.file.path":"/var/log/pods/eks-opensips_west-registrar-f5c5896d4-rgn8d_44da0dac-0521-4e1b-b4e7-89c7f0f87c11/west-registrar/0.log","log.iostream":"stderr","logtag":"F"},"resources":{"k8s.container.restart_count":"0","k8s.pod.uid":"44da0dac-0521-4e1b-b4e7-89c7f0f87c11"}}<br>
2025-10-20 00:30:03.121 <br>
{"body":"Oct 19 19:00:03 [36]<b>
CRITICAL:db_mysql:wrapper_single_mysql_stmt_execute:
driver error (1243): Unknown prepared statement handler
(5) given to mysql_stmt_precheck","attributes</b>":{"log.file.path":"/var/log/pods/eks-opensips_west-registrar-f5c5896d4-rgn8d_44da0dac-0521-4e1b-b4e7-89c7f0f87c11/west-registrar/0.log","log.iostream":"stderr","logtag":"F"},"resources":{"k8s.container.restart_count":"0","k8s.pod.uid":"44da0dac-0521-4e1b-b4e7-89c7f0f87c11"}}<br>
2025-10-20 00:30:03.121 <br>
{"body":"Oct 19 19:00:03 [36]<b>
ERROR:usrloc:db_insert_ucontact: inserting contact in db
failed","attributes":</b>{"log.file.path":"/var/log/pods/eks-opensips_west-registrar-f5c5896d4-rgn8d_44da0dac-0521-4e1b-b4e7-89c7f0f87c11/west-registrar/0.log","log.iostream":"stderr","logtag":"F"},"resources":{"k8s.container.restart_count":"0","k8s.pod.uid":"44da0dac-0521-4e1b-b4e7-89c7f0f87c11"}}<br>
2025-10-20 00:30:03.121 <br>
{"body":"Oct 19 19:00:03 [36]<b> ERROR:usrloc:wb_timer:
inserting contact into database failed</b>","attributes":{"log.file.path":"/var/log/pods/eks-opensips_west-registrar-f5c5896d4-rgn8d_44da0dac-0521-4e1b-b4e7-89c7f0f87c11/west-registrar/0.log","log.iostream":"stderr","logtag":"F"},"resources":{"k8s.container.restart_count":"0","k8s.pod.uid":"44da0dac-0521-4e1b-b4e7-89c7f0f87c11"}}<br>
</div>
<div><br>
</div>
<div>*** I have 2 instance on which opensips running and the
Database is common for both . </div>
<div><br>
</div>
<div>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr"><b><i>Thanks & Regards</i></b>
<div><i>Sasmita Panda</i></div>
<div><i>Senior Network Testing and Software
Engineer</i></div>
<div><i>3CLogic , ph:07827611765</i></div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<fieldset></fieldset>
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</pre>
</blockquote>
<br>
</div>
</blockquote></div>