Error: ORA-12505:TNS: listener does not currently know of SID given in connect descriptor - when connecting to PL/SQL

This article will outline the steps to troubleshoot and resolve the connection error when accessing PL/SQL Developer.
This error means there is a discrepancy with the clients connection info on the tnsnames.ora file.  Submit a subcase to RDOI-DBA-Oracle to investigate further.

Environment

 Team Approach
 RSR
 TA

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