The SQL syntax elements for Oracle Version 7 and MySQL MaxDB in SQL mode ORACLE differ, among other things, with regard to object access.
If an owner is not specified when a database object is accessed, and no object belonging to the current user exists with this name, the following procedure, different to the Oracle for MaxDB procedure, applies when the database object is accessed:
...
1. MaxDB searches for this object in the PUBLIC synonyms.
2. If the object was not found, MaxDB searches for this object in the part of the database catalog of the DBA user that the current user generated.
3. If the object was not found, MaxDB searches for this object in SYSDBA user’s part of the database catalog.