An unacceptable string was encountered while attempting to send a message to either the Navigator or Connection Manager. The addresses provided for either the Navigator or Connection Manager may be incorrectly constructed.
Check all address strings in configuration files (TNSNAMES.ORA, TNSNAV.ORA or TNSNET.ORA) and assure that they are properly formed. Regenerate the files, if possible. If all is correct, please contact Worldwide Customer Support.