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My Sql developer was working fine from long time, suddenly from yesterday when i am trying to reconnect it is giving me following error:-

Status : Failure -Test failed: IO Error: Got minus one from a read call, connect lapse 62991 ms., Authentication lapse 0 ms.

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Things I tried to solve the issue:-

  1. Made corresponding changes in sqlnet.ora , listener.ora and tnsnames.ora files
  2. Checked is there are too many open connections to the database service.
  3. Restarted ORACLE service and listener
  4. Firewall related changes
  5. Reinstalled ORACLE
APC
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Swagat
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  • Possible duplicate of [How to approach a "Got minus one from a read call" error when connecting to an Amazon RDS Oracle instance](https://stackoverflow.com/questions/19660336/how-to-approach-a-got-minus-one-from-a-read-call-error-when-connecting-to-an-a) –  May 24 '17 at 13:34
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    Thank you for the link, but i have already tried that one. – Swagat May 24 '17 at 14:23
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    It would help if you would edit your post to add information about what you have tried already and ruled out as possible reasons. –  May 24 '17 at 14:24

1 Answers1

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In my case the issue, it is due to a malware. Whenever i am trying to connect to DB port, it was automatically getting changed by malware.

You can also identify the problem by using lsnrctl status command, for further information. You can also see the log file of listener.

Run a full scan on your machine and restart listener, hope that helps.

Swagat
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