Oracle Solution for Error ora-06534

ORA-06534: Cannot access Serially Reusable package string

What triggered the Error:

The program attempted to access a Serially Reusable package in PL/SQL called from SQL context (trigger or otherwise). Such an access is currently unsupported.

What should we do to fix it:

Check the program logic and remove any references to Serially Reusable packages (procedure, function or variable references) which might happen in PL/SQL called from sql context (trigger or otherwise).