List drop-down connection of AMT

Using SQL Developer 4.0.1.14 - but I have seen this in other versions.  When I create a new connection or modify an existing one with Connection Type TNS and the drop-down list for network Alias, sometimes I see more than one alias with the same name.  There is only one entry with that name in my TNSNAMES file. ORA file.  I have only a single file, TNSNAMES. ORA file and is referenced by the TNS_ADMIN environment variable.

Even more bizarre, sometimes by selecting one of these pseudonymous works, but one other will give me an error such as ORA-01034 or TNS.

But again - can no problem, someone explain what is happening here?

Prob b/c, you have several tns files * this directory - we read in more than a simple tnsnames.ora. You have all backups of this file?

Tags: Database

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