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DB_S_LOCKUPGRADED
OLE DB provider upgraded the requested lock
DB_S_LOCKUPGRADED is HRESULT 265944 (0x00040ED8) from Microsoft OLE DB. AllStat describes this result as “Lock was upgraded from the value specified.” The high-order severity bit is clear, so this is a success result, but it carries more information than plain S_OK.
The provider granted a stronger lock than the consumer requested.
Where the result is encountered
- This result can appear in row locking in updateable rowsets; record the producing interface and method rather than inferring behavior from the symbolic name alone.
- This result can appear in providers mapping unsupported lock modes; record the producing interface and method rather than inferring behavior from the symbolic name alone.
- It can appear in transactions where write intent requires stronger protection; record the producing interface and method rather than inferring behavior from the symbolic name alone.
The same numeric success value can be mishandled when a wrapper exposes only a Boolean. Keep the original HRESULT until the code-specific outputs and state transition have been evaluated.
State boundary that must be proved
The central question for it is whether the stronger lock’s blocking and concurrency consequences are acceptable for the transaction. The HRESULT alone confirms neither unrelated work nor the quality of optional outputs.
A reliable interpretation of it names the exact method contract, the object generation, and the outputs that remain valid. This prevents a success-with-information result from being promoted to full success or demoted to a generic error.
Diagnostic sequence
- capture the raw HRESULT
0x00040ED8immediately after the returning method and record whether the caller usedSUCCEEDED,FAILED, equality testing, or exception translation. - Identify the exact owner of it: interface, method, object instance, provider or filter version, thread or apartment, and operation phase.
- Validate the decisive contract boundary for it: the stronger lock’s blocking and concurrency consequences are acceptable for the transaction.
- inspect every output parameter, count, status array, returned interface, or side effect that the method documentation associates with this success-with-information result.
- Compare the observed state before and after it; do not assume that a success severity bit means every optional sub-operation completed.
- reproduce the smallest request with the same object state and then change only the condition identified by the evidence before repeating the operation.
Evidence and telemetry to preserve
- preserve requested and actual lock modes.
- preserve row or object identity.
- preserve transaction isolation level.
- preserve blocking sessions.
- preserve duration until release.
Also record db_s_lockupgraded_operation, db_s_lockupgraded_object, db_s_lockupgraded_state_before, db_s_lockupgraded_state_after, UTC time, process and thread identifiers, and a correlation ID. Keep secrets out of logs while retaining GUIDs, CLSIDs, media subtypes, property IDs, row identities, and hashes needed to distinguish objects.
Correct handling, retry, and recovery
Continue only if stronger locking is acceptable, minimize transaction duration, and expose the effective mode in diagnostics. Do not assume the original concurrency level.
Retry it only when the recorded state can change the documented outcome. Repeating the same call is inappropriate for a stable end marker, cancellation, unsupported format, adjusted property, or partial result whose completed side effects have not been reconciled.
Difference from nearby HRESULT values
DB_S_CANTRELEASE says a lock cannot be downgraded before transaction end; it reports that acquisition itself became stronger.
This distinction determines whether the caller should consume partial outputs, stop iteration, wait, reconfigure, notify the user, or perform no error recovery at all.
Practical validation scenario
A provider upgrades an intended shared lock to an update lock. The application completes the update quickly and records the effective lock so performance analysis explains later blocking.
The negative test should preserve the condition that produces it; the recovery test should alter only that condition and verify the final state as well as the HRESULT.
Developer and administrator guidance
Code handling it should test the exact documented value before a generic SUCCEEDED(hr) branch when outputs or control flow differ. Operational remediation for it should target the owning COM, media, Tablet PC, or OLE DB component instead of resetting unrelated services.
A support report for it should include decimal 265944, hexadecimal 0x00040ED8, the AllStat meaning, the owning API, and the first detailed status or output that explains why the method did not return ordinary S_OK.
References
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