EconLit is exclusively devoted to indexing and abstracting articles in the field of economics
JSTOR is a multi-subject database with strong coverage in the areas of business and economics. Its only drawback is that all articles are at least 3 years old.
PAIS indexes articles in the fields of policy and administration
SSRN: Social Sciences Research Network
Academic Search Premier: a multi-subject database with good coverage of general news sources and scholarly journals.
Then, go here:
Business Source Complete is a very good database that contains journal articles in the areas of business and economics