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DB_E_RESOURCENOTSUPPORTED
Meaning
Windows documents DB_E_RESOURCENOTSUPPORTED as “Requested object type is not supported by the provider”. In this case, the provider does not support binding or creating the requested OLE DB resource object type.
Relevant contract
The OLE DB binder model maps URLs to row, rowset, stream or collection objects. URL scope, requested object type, bind flags, asynchronous capability, locks and server reachability are independent parts of the binding contract.
Investigation of this result should start with the binder or session, normalized URL, requested GUID/object type and DBBINDURLSTATUS result.
Evidence to collect
When recording diagnostic data involving URLs containing credentials, tenant paths and remote object names, use types, lengths, hashes or redacted identifiers rather than secrets or complete business data.
- Evidence 1: requested object GUID and bind flags.
- Evidence 2: provider object-type capabilities.
- Evidence 3: actual type available for the URL.
Conditions that specifically lead to it
- Cause 1: the requested GUID names an unsupported row, rowset, stream or collection type.
- Cause 2: the provider supports the URL but exposes a different object model.
- Cause 3: a client assumes optional row-object capabilities.
Diagnostic sequence
- Identify the exact failing stage: the provider does not support binding or creating the requested OLE DB resource object type.
Retry and recovery
Retry rule: retry only with a supported resource type or provider.
Corrective actions
- Action 1: request a supported object type.
- Action 2: adapt through a documented rowset or stream path.
- Action 3: select another provider when the resource type is essential.
Practical scenario
A client requests a collection rowset from a provider that exposes only row streams; choosing the stream contract prevents it.
Difference from nearby HRESULT values
DB_E_NOTCOLLECTION means the provider supports collections but this resource is not one, while DB_E_RESOURCENOTSUPPORTED means the object type is unsupported.
Official Microsoft references
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