Question

Is it possible to determine where Oracle is installed using pure PL/SQL?

Use case:
In order to call an external C library, I need to know its exact path (for the create library call). My DLL will reside in Oracle’s BIN directory, but I can’t hard-code the path of the DB installation in my scripts…

Answer 1

On Windows and Oracle 10g, this works:

SELECT  
substr(file_spec,1,instr(file_spec,'\',1,3)) 
FROM dba_libraries 
WHERE library_name='DBMS_SUMADV_LIB'