Certification Pursuant to Rule 30a-2(b) under the 1940 Act and Section 906 of the
Sarbanes-Oxley Act
I, William Ferri, Principal Executive Officer of O’Connor Fund of Funds: Long/Short Credit Strategies LLC (the “Registrant”), certify that:
| 1. | The Form N-CSR of the Registrant (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and |
| 2. | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant. |
| Date: September 5, 2012 | /s/ William Ferri | |
| William Ferri, Principal Executive Officer |
I, Nicholas Vagra, Principal Accounting Officer of O’Connor Fund of Funds: Long/Short Credit Strategies LLC (the “Registrant”), certify that:
| 1. | The Form N-CSR of the Registrant (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and |
| 2. | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant. |
| Date: | /s/ Nicholas Vagra | |
Nicholas Vagra, Principal Accounting Officer |