EX-99.906CERT

Section 906 Certifications

                CERTIFICATION PURSUANT TO 18 U.S.C SECTION 1350,

                             AS ADOPTED PURSUANT TO

                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

      JOHN V. MURPHY, Principal Executive Officer, and BRIAN W. WIXTED, Chief
Financial Officer, of Oppenheimer Strategic Income Fund (the "Registrant"), each
certify to the best of his or her knowledge that:

      1. The Registrant's periodic report on Form N-CSR for the period ended
March 31, 2005 (the "Form N-CSR") fully complies with the requirements of
Section 15(d) of the Securities Exchange Act of 1934, as amended; and

      2. The information contained in the Form N-CSR fairly presents, in all
material respects, the financial condition and results of operations of the
Registrant. This certification is being furnished to the Commission solely
pursuant to 18 U.S.C. ss. 1350 and is not being filed as part of the Form N-CSR
filed with the Commission.

Principal Executive Officer                 Chief Financial Officer

Oppenheimer Strategic Income Fund           Oppenheimer Strategic Income Fund

/s/ John V. Murphy                          /s/ Brian W. Wixted
- ---------------------------------           ---------------------------------
John V. Murphy                              Brian W. Wixted

Date: May 13, 2005                          Date: May 13, 2005