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"opiino: Attach failed! error=-1 ifvp=0" written in Database UDUMP file (Doc ID 399727.1)

Last updated on JANUARY 31, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2 to 12.1]
Oracle Net Services - Version to [Release 10.2 to 12.1]
Information in this document applies to any platform.


When a client process is abnormally disconnected from the Database (server) process, specifically at a point where the Database needs to negotiate and communicate certain OCI / TWO-TASK data to the client such as with character sets, OCI, etc., then the Database may throw one of the following errors in a UDUMP trace:


Perhaps an abnormally high increase in connection activity from App Servers or a network condition or change causing instability.


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