ORA-06521 ORA-06522 When Using PL/SQL to Call Simple .Dll Files From C Programs (Doc ID 297906.1)

Last updated on JULY 05, 2017

Applies to:

PL/SQL - Version: 8.1.7.0 to 11.2.0.1 - Release: 8.1.7 to 11.2
Microsoft Windows (32-bit)
Microsoft Windows x64 (64-bit)
Microsoft Windows Itanium (64-bit)
***Checked for relevance on 06-Jul-2010***

Symptoms

When using <>  to generate an external procedure with Visual C++ the procedure returns the following errors:

ORA-06521: PL/SQL Error mapping function
ORA-06522: Unable to load symbol from DLL
ORA-6512 at "username.SQUARE_OF"

Cause

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