12c Client Applications can Hang or Disconnect
Last updated on MARCH 02, 2017
Applies to:Oracle Net Services - Version 220.127.116.11 and later
Information in this document applies to any platform.
This issue was initially reported as a client application hanging after upgrade to 12c client software.
The Oracle Net server trace shows the following:
The server side is reporting a "connection reset by peer" after a few minutes.
#define ECONNRESET 73 /* Connection reset by peer */
The trace of the client showed it was unaware of the disconnection. The ECONNRESET was thrown on the underlying transport level.
This was a recent upgrade to the 12c client.
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