WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 1087774
<NAME> Oppenheimer Senior Floating Rate Fund - B shares
<S> <C>
<PERIOD-TYPE> 11-MOS
<FISCAL-YEAR-END> JUL-31-2000
<PERIOD-START> SEP-08-1999
<PERIOD-END> JUL-31-2000
<INVESTMENTS-AT-COST> 322,731,372
<INVESTMENTS-AT-VALUE> 322,130,260
<RECEIVABLES> 5,912,899
<ASSETS-OTHER> 72,090
<OTHER-ITEMS-ASSETS> 1,133
<TOTAL-ASSETS> 328,116,382
<PAYABLE-FOR-SECURITIES> 8,971,250
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 3,448,547
<TOTAL-LIABILITIES> 12,419,797
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 316,096,639
<SHARES-COMMON-STOCK> 9,865,146
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 151,365
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 49,693
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (601,112)
<NET-ASSETS> 98,342,918
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 11,384,588
<OTHER-INCOME> 1,121
<EXPENSES-NET> 1,680,342
<NET-INVESTMENT-INCOME> 9,705,367
<REALIZED-GAINS-CURRENT> 49,693
<APPREC-INCREASE-CURRENT> (601,112)
<NET-CHANGE-FROM-OPS> 9,153,948
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 3,381,755
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10,074,777
<NUMBER-OF-SHARES-REDEEMED> 433,905
<SHARES-REINVESTED> 224,174
<NET-CHANGE-IN-ASSETS> 315,594,585
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 920,997
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,162,485
<AVERAGE-NET-ASSETS> 49,122,000
<PER-SHARE-NAV-BEGIN> 10.00
<PER-SHARE-NII> 0.67
<PER-SHARE-GAIN-APPREC> (0.03)
<PER-SHARE-DIVIDEND> 0.67
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 9.97
<EXPENSE-RATIO> 1.76
</TABLE>
