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the network adapter could not establish the connection (SQL developer to Oracle Database 12c

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edited Aug 2, 2018 2:36AM in Essbase

Summary

the network adapter could not establish the connection (SQL developer to Oracle Database 12c

Content

Hi

I tried to connect SQL developer to Oracle database 12c after I spent a lot on research and solving problem, but it didn't work.

I attach pics here as many as possible as. I don't know what's wrong with my oracle.. I'd really appreciate your supports and helps if this can be solved.

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