WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

  

<ARTICLE> 6                       
<CIK>                356865
<NAME>               Oppenheimer Disciplined Allocation - B Shares
<SERIES>                                                                 
   <NUMBER>          4
   <NAME>            Oppenheimer Series Fund, Inc.
       
                                                                     
<PERIOD-TYPE>                                                           12-MOS
<FISCAL-YEAR-END>                                                       OCT-31-1997
<PERIOD-START>                                                          NOV-01-1996
<PERIOD-END>                                                            OCT-31-1997
<INVESTMENTS-AT-COST>                                                                 219,783,941
<INVESTMENTS-AT-VALUE>                                                                240,750,332
<RECEIVABLES>                                                                          14,434,499
<ASSETS-OTHER>                                                                              4,372
<OTHER-ITEMS-ASSETS>                                                                       63,951
<TOTAL-ASSETS>                                                                        255,253,154
<PAYABLE-FOR-SECURITIES>                                                                1,450,222
<SENIOR-LONG-TERM-DEBT>                                                                         0
<OTHER-ITEMS-LIABILITIES>                                                                 341,791
<TOTAL-LIABILITIES>                                                                     1,792,013
<SENIOR-EQUITY>                                                                                 0
<PAID-IN-CAPITAL-COMMON>                                                              204,544,232
<SHARES-COMMON-STOCK>                                                                     513,404
<SHARES-COMMON-PRIOR>                                                                     242,457
<ACCUMULATED-NII-CURRENT>                                                                 828,581
<OVERDISTRIBUTION-NII>                                                                          0
<ACCUMULATED-NET-GAINS>                                                                27,121,937
<OVERDISTRIBUTION-GAINS>                                                                        0
<ACCUM-APPREC-OR-DEPREC>                                                               20,966,391
<NET-ASSETS>                                                                            8,720,474
<DIVIDEND-INCOME>                                                                       1,968,214
<INTEREST-INCOME>                                                                       8,554,080
<OTHER-INCOME>                                                                                  0
<EXPENSES-NET>                                                                          2,792,481
<NET-INVESTMENT-INCOME>                                                                 7,729,813
<REALIZED-GAINS-CURRENT>                                                               27,308,175
<APPREC-INCREASE-CURRENT>                                                               7,070,415
<NET-CHANGE-FROM-OPS>                                                                  42,108,403
<EQUALIZATION>                                                                                  0
<DISTRIBUTIONS-OF-INCOME>                                                                 168,085
<DISTRIBUTIONS-OF-GAINS>                                                                  389,052
<DISTRIBUTIONS-OTHER>                                                                           0
<NUMBER-OF-SHARES-SOLD>                                                                   279,134
<NUMBER-OF-SHARES-REDEEMED>                                                                43,911
<SHARES-REINVESTED>                                                                        35,724
<NET-CHANGE-IN-ASSETS>                                                                 16,064,801
<ACCUMULATED-NII-PRIOR>                                                                 1,524,191
<ACCUMULATED-GAINS-PRIOR>                                                              20,128,897
<OVERDISTRIB-NII-PRIOR>                                                                         0
<OVERDIST-NET-GAINS-PRIOR>                                                                      0
<GROSS-ADVISORY-FEES>                                                                   1,535,343
<INTEREST-EXPENSE>                                                                              0
<GROSS-EXPENSE>                                                                         2,792,481
<AVERAGE-NET-ASSETS>                                                                    6,183,000
<PER-SHARE-NAV-BEGIN>                                                                          16.16
<PER-SHARE-NII>                                                                                 0.40
<PER-SHARE-GAIN-APPREC>                                                                         2.27
<PER-SHARE-DIVIDEND>                                                                            0.45
<PER-SHARE-DISTRIBUTIONS>                                                                       1.39
<RETURNS-OF-CAPITAL>                                                                            0.00
<PER-SHARE-NAV-END>                                                                            16.99
<EXPENSE-RATIO>                                                                                 1.89
<AVG-DEBT-OUTSTANDING>                                                                          0
<AVG-DEBT-PER-SHARE>                                                                            0.00