EX-31 Rule 13a-14(d)/15d-14(d) Certifications.





I, Kunal K. Singh, certify that:



1. I have reviewed this report on Form 10-K and all reports on
Form 10-D required to be filed in respect of the period covered by this report on
Form 10-K of the JPMDB Commercial Mortgage Securities Trust 2017-C5 (the
"Exchange Act periodic reports");



2. Based on my knowledge, the Exchange Act periodic reports, taken
as a whole, do not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with
respect to the period covered by this report;



3. Based on my knowledge, all of the distribution, servicing and
other information required to be provided under Form 10-D for the period
covered by this report is included in the Exchange Act periodic reports;



4. Based on my knowledge and the servicer compliance statements
required in this report under Item 1123 of Regulation AB, and except as
disclosed in the Exchange Act periodic reports, the servicers have fulfilled
their obligations under the servicing agreements in all material respects; and



5. All of the reports on assessment of compliance with servicing
criteria for asset-backed securities and their related attestation reports on
assessment of compliance with servicing criteria for asset-backed securities
required to be included in this report in accordance with Item 1122 of
Regulation AB and Exchange Act Rules 13a-18 and 15d-18 have been included as an
exhibit to this report, except as otherwise disclosed in this report. Any
material instances of noncompliance described in such reports have been
disclosed in this report on Form 10-K.



In giving the certifications above, I have reasonably relied on
information provided to me by the following unaffiliated parties:



Wells Fargo Bank, National Association, as Master Servicer,
CWCapital Asset Management LLC, as Special Servicer, Wilmington Trust, National
Association, as Trustee, Wells Fargo Bank, National Association, as Certificate
Administrator, Wells Fargo Bank, National Association, as Custodian, Park
Bridge Lender Services LLC, as Operating Advisor, CoreLogic Solutions, LLC., as
Servicing Function Participant, Computershare Trust Company, National
Association, as Servicing Function Participant for the Certificate
Administrator, Computershare Trust Company, National Association, as Servicing
Function Participant for the Custodian, Wells Fargo Bank, National Association,
as Primary Servicer for the Prudential Plaza Mortgage Loan, CWCapital Asset
Management LLC, as Special Servicer for the Prudential Plaza Mortgage Loan,
Wilmington Trust, National Association, as Trustee for the Prudential Plaza
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Prudential Plaza Mortgage Loan, Park Bridge Lender Services LLC, as Senior
Trust Advisor for the Prudential Plaza Mortgage Loan, CoreLogic Solutions,
LLC., as Servicing Function Participant for the Prudential Plaza Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Prudential Plaza Mortgage Loan, Wells
Fargo Bank, National Association, as Primary Servicer for the Hilton Hawaiian
Village Mortgage Loan, CWCapital Asset Management LLC, as Special Servicer for
the Hilton Hawaiian Village Mortgage Loan, Wilmington Trust, National
Association, as Trustee for the Hilton Hawaiian Village Mortgage Loan, Wells
Fargo Bank, National Association, as Custodian for the Hilton Hawaiian Village
Mortgage Loan, CoreLogic Solutions, LLC, as Servicing Function Participant for
the Hilton Hawaiian Village Mortgage Loan, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian for
the Hilton Hawaiian Village Mortgage Loan, Wells Fargo Bank, National
Association, as Primary Servicer for the 229 West 43rd Street Retail Condo
Mortgage Loan, KeyBank National Association, as Special Servicer for the 229 West
43rd Street Retail Condo Mortgage Loan, Wilmington Trust, National Association,
as Trustee for the 229 West 43rd Street Retail Condo Mortgage Loan, Wells Fargo
Bank, National Association, as Custodian for the 229 West 43rd Street Retail
Condo Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor for
the 229 West 43rd Street Retail Condo Mortgage Loan, CoreLogic Solutions, LLC,
as Servicing Function Participant for the 229 West 43rd Street Retail Condo
Mortgage Loan, Computershare Trust Company, National Association, as Servicing
Function Participant for the Custodian for the 229 West 43rd Street Retail
Condo Mortgage Loan, Wells Fargo Bank, National Association, as Primary
Servicer for the Summit Mall Mortgage Loan, LNR Partners, LLC, as Special
Servicer for the Summit Mall Mortgage Loan, Wilmington Trust, National
Association, as Trustee for the Summit Mall Mortgage Loan, Wells Fargo Bank,
National Association, as Custodian for the Summit Mall Mortgage Loan, Pentalpha
Surveillance LLC, as Operating Advisor for the Summit Mall Mortgage Loan,
CoreLogic Solutions, LLC, as Servicing Function Participant for the Summit Mall
Mortgage Loan, Computershare Trust Company, National Association, as Servicing
Function Participant for the Custodian for the Summit Mall Mortgage Loan, Wells
Fargo Bank, National Association, as Primary Servicer for the Moffett Gateway
Mortgage Loan, LNR Partners, LLC, as Special Servicer for the Moffett Gateway
Mortgage Loan, Wilmington Trust, National Association, as Trustee for the
Moffett Gateway Mortgage Loan, Wells Fargo Bank, National Association, as
Custodian for the Moffett Gateway Mortgage Loan, Pentalpha Surveillance LLC, as
Operating Advisor for the Moffett Gateway Mortgage Loan, CoreLogic Solutions,
LLC., as Servicing Function Participant for the Moffett Gateway Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Moffett Gateway Mortgage Loan, Wells
Fargo Bank, National Association, as Primary Servicer for the Dick's Sporting
Goods Portfolio Mortgage Loan, LNR Partners, LLC, as Special Servicer for the
Dick's Sporting Goods Portfolio Mortgage Loan, Wilmington Trust, National
Association, as Trustee for the Dick's Sporting Goods Portfolio Mortgage Loan,
Wells Fargo Bank, National Association, as Custodian for the Dick's Sporting
Goods Portfolio Mortgage Loan, Pentalpha Surveillance LLC, as Operating Advisor
for the Dick's Sporting Goods Portfolio Mortgage Loan, CoreLogic Solutions,
LLC., as Servicing Function Participant for the Dick's Sporting Goods Portfolio
Mortgage Loan, Computershare Trust Company, National Association, as Servicing
Function Participant for the Custodian for the Dick's Sporting Goods Portfolio
Mortgage Loan, Midland Loan Services, a Division of PNC Bank, National
Association, as Primary Servicer for the 350 Park Avenue Mortgage Loan,
CWCapital Asset Management LLC, as Special Servicer for the 350 Park Avenue
Mortgage Loan, Wells Fargo Bank, National Association, as Trustee for the 350
Park Avenue Mortgage Loan, Wells Fargo Bank, National Association, as Custodian
for the 350 Park Avenue Mortgage Loan, Computershare Trust Company, National
Association, as Servicing Function Participant for the Custodian for the 350
Park Avenue Mortgage Loan, Midland Loan Services, a Division of PNC Bank,
National Association, as Primary Servicer for the Summit Place Wisconsin
Mortgage Loan, Midland Loan Services, a Division of PNC Bank, National
Association, as Special Servicer for the Summit Place Wisconsin Mortgage Loan,
Wells Fargo Bank, National Association, as Trustee for the Summit Place
Wisconsin Mortgage Loan, Wells Fargo Bank, National Association, as Custodian
for the Summit Place Wisconsin Mortgage Loan, Park Bridge Lender Services LLC,
as Operating Advisor for the Summit Place Wisconsin Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Summit Place Wisconsin Mortgage Loan,
Midland Loan Services, a Division of PNC Bank, National Association, as Primary
Servicer for the Dallas Design District Mortgage Loan, LNR Partners, LLC, as
Special Servicer for the Dallas Design District Mortgage Loan, Wells Fargo
Bank, National Association, as Trustee for the Dallas Design District Mortgage
Loan, Wells Fargo Bank, National Association, as Custodian for the Dallas
Design District Mortgage Loan, Pentalpha Surveillance LLC, as Operating Advisor
for the Dallas Design District Mortgage Loan, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian for
the Dallas Design District Mortgage Loan, Midland Loan Services, a Division of
PNC Bank, National Association, as Primary Servicer for the Landmark Square
Mortgage Loan, LNR Partners, LLC, as Special Servicer for the Landmark Square
Mortgage Loan, Wells Fargo Bank, National Association, as Trustee for the
Landmark Square Mortgage Loan, Wells Fargo Bank, National Association, as
Custodian for the Landmark Square Mortgage Loan, Pentalpha Surveillance LLC, as
Operating Advisor for the Landmark Square Mortgage Loan, Computershare Trust
Company, National Association, as Servicing Function Participant for the
Custodian for the Landmark Square Mortgage Loan, Wells Fargo Bank, National
Association, as Primary Servicer for the Key Center Cleveland Mortgage Loan,
Rialto Capital Advisors, LLC, as Special Servicer for the Key Center Cleveland
Mortgage Loan, Deutsche Bank Trust Company Americas, as Trustee for the Key
Center Cleveland Mortgage Loan, Deutsche Bank Trust Company Americas, as
Custodian for the Key Center Cleveland Mortgage Loan, Park Bridge Lender
Services LLC, as Operating Advisor for the Key Center Cleveland Mortgage Loan,
CoreLogic Solutions, LLC, as Servicing Function Participant for the Key Center
Cleveland Mortgage Loan, Midland Loan Services, a Division of PNC Bank,
National Association, as Primary Servicer for the Uovo Art Storage Mortgage
Loan, Rialto Capital Advisors, LLC, as Special Servicer for the Uovo Art
Storage Mortgage Loan, Wells Fargo Bank, National Association, as Trustee for
the Uovo Art Storage Mortgage Loan, Wells Fargo Bank, National Association, as
Custodian for the Uovo Art Storage Mortgage Loan, Park Bridge Lender Services
LLC, as Operating Advisor for the Uovo Art Storage Mortgage Loan, and
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Uovo Art Mortgage Loan.







Dated:
March 15, 2023





/s/ Kunal K. Singh

Kunal K. Singh

President and Chief Executive Officer

(senior
officer in charge of securitization of the depositor)