Does Oracle provide public Symbol Files (PDB) for OCCI/OCI?
No, Oracle does not provide these files, neither for OCCI nor for OCI. (at least not for version 10, nor for 11)
The reason really escapes me, but trying to get behind any reasoning of Oracle is a sure road to insanity.
I should add a quote from the Oracle forums:
unfortunatly not - only in case of a bug support can request such symbol files from development Oracle ships only the debugging libraries which named *d.dll
This wasn't an official Oracle response, but I guess the user knew what he was talking about.