The European Central Bank has declined to give evidence to the banking inquiry.
The inquiry wanted to quiz the lender about the bailout of the country’s banks.
Chairman of the inquiry Ciaran Lynch said it was “unfortunate and unsatisfactory” that nobody would be attending.
The Oireachtas Banking Inquiry committee is investigating Europe’s financial rescue of Ireland in 2010.
“While the ECB is outside the Irish jurisdiction and beyond the committee’s powers of compellability, we did have an expectation that it would assist us in our work.
“The response is disappointing given that the committee made every effort to accommodate the ECB and also to facilitate it in reviewing and responding to statements and evidence given at our public hearings which referenced the role and influence of the ECB.”