OPPENHEIMER CALIFORNIA TAX EXEMPT FUND
497, 1996-10-17
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                                             (logo)OPPENHEIMERFUNDS
Denis Mouller                                OppenheimerFund, Inc.
Vice President and                           Two World Trade Center, 34th Floor
Associate Counsel                            New York, New York 10048-0203
                                             212 323-2000 Fax 212 323-0558


                                             October 18, 1996





Securities and Exchange Commission
OFICS File Support
Mail Stop O-7, SEC Operations Center
6432 Alexandria, VA  22312

                  Re:      Oppenheimer California Municipal Fund
                           Reg. No. 33-23223  File No. 811-5586

To the Securities and Exchange Commission:

         An electronic  ("Edgar") filing is hereby made under Rule 497(e) of the
Securities  Act of  1933 on  behalf  of the  above-captioned  Fund.  The  filing
includes a  supplement  dated  October 18, 1996 to the Fund's  Prospectus  dated
April 20, 1996.

                                              Very truly yours,


                                              /s/ Denis Molleur
                                             -------------------
                                             Denis Molleur
                                             Vice President &
                                             Associate Counsel
                                             (212) 323-0560
DM                                      

cc:      Ronald Feiman, Esq.
         KPMG Peat Marwick LLP
         Gloria LaFond




<PAGE>


                      OPPENHEIMER CALIFORNIA MUNICIPAL FUND
                (formerly Oppenheimer Californa Tax-Exempt Fund)
                        Supplement dated October 18, 1996
                     to the Prospectus dated April 20, 1996


         The second  paragraph  in the  section  captioned  "Class A  Contingent
Deferred  Sales  Charge" on page 29 is revised by replacing the second and third
sentences with the following sentences:

                  The  Distributor  pays dealers of record  commissions on those
         non-  retirement  plan  purchases  in an  amount  equal to  1.0%.  That
         commission will be paid only on the amount of those purchases that were
         not  previously   subject  to  a  front-end  sales  charge  and  dealer
         commission.











October 18, 1996                                                     PS0790.002







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