I created a database link, and it worked for two or three days. My next attempt to use it resulted in an ORA-12640 -- "Authentication Adapter Initialization Failed". I checked up the error and found it didn't say specifically what the problem really was. I even reinstalled Oracle 8i and recreated the link and, again, it worked for a few days with the same error reoccuring. Can you please shed light on this error and how it can be resolved?
It is curious that your database link works for a while and then starts failing. That shouldn't happen. Unfortunately, the only what to know exactly what the problem is, and thus the resolution, is to enable network tracing and send the trace files to Oracle Support for analysis. You'll have to open a TAR on Metalink to get this resolved.
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