This can be O/S dependent – some O/S have limits on file descriptors, pipes, etc. I would check that. Second, broken pipes happen when one side closes when there is still action. In Unix C it is easy to do – if you use a piped open but you only want to get the first line of data so your read from the pipe and close … you get a broken pipe every time. This is harmless if that is what you want. Death if not. You might check your Oracle code for premature closing as I doubt it is stunnel. Can you trap the error and resume and see if it works? It well could. Essentially what I am saying is this is not directly a stunnel problem, more likely it is an implementation error. Which could be in the Oracle code as I have had problems with it in the past. More information on the O/S and the Oracle code would help. Eric VICS, LLC Eric S Eberhard 2933 W Middle Verde Rd Camp Verde, AZ 86322 928-567-3727 (land line) 928-301-7537 (cell phone) <http://www.vicsmba.com/> http://www.vicsmba.com <https://www.facebook.com/groups/286143052248115> https://www.facebook.com/groups/286143052248115 From: stunnel-users <stunnel-users-bounces@stunnel.org> On Behalf Of Jose Alf. Sent: Wednesday, March 4, 2020 11:09 AM To: stunnel-users@stunnel.org; simona vittori <svittori@gmail.com> Subject: Re: [stunnel-users] (no subject) Simona, You are not giving enough information for anyone in this list to help you. Please review and apply How To Ask Questions The Smart Way <http://catb.org/~esr/faqs/smart-questions.html> How To Ask Questions The Smart Way and/or How to Report Bugs Effectively <https://www.chiark.greenend.org.uk/~sgtatham/bugs.html> How to Report Bugs Effectively Regards, Jose On Wednesday, March 4, 2020, 4:22:26 AM GMT-5, simona vittori <svittori@gmail.com <mailto:svittori@gmail.com> > wrote: Hello, I have an encrypted connection through stunnel between client and db server, but in connection I have the following errors: "IO Error: Broken pipe (Write failed) at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:874)" Could you help me, please? Thank you in advance Simona _______________________________________________ stunnel-users mailing list stunnel-users@stunnel.org <mailto:stunnel-users@stunnel.org> https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users