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DB_E_BADCOMMANDFLAGS
Meaning
Windows documents DB_E_BADCOMMANDFLAGS as “Command persistence flag is invalid”. In this case, a command persistence method receives an invalid combination of persistence flags.
Evidence to collect
When recording diagnostic data involving command text, persistent command names and schema identifiers, use types, lengths, hashes or redacted identifiers rather than secrets or complete business data.
- Evidence 1: raw command flag mask.
- Evidence 2: persistence method and requested operation.
- Evidence 3: provider-supported command persistence behavior.
Relevant contract
Persisted OLE DB commands use DBIDs and persistence flags that are distinct from command text. A live command can execute successfully without having a persistent identity, and a persistent name is scoped to the provider namespace.
Investigation of this result should start with the command object, current DBID, persistence flags and provider namespace.
Conditions that specifically lead to it
- Cause 1: unknown flag bits are set.
- Cause 2: mutually exclusive create, replace or load modes are combined.
- Cause 3: flags from another persistence API are forwarded unchanged.
Diagnostic sequence
- Identify the exact failing stage: a command persistence method receives an invalid combination of persistence flags.
Corrective actions
- Action 1: build flags from the exact persistence action.
- Action 2: reject unknown bits.
- Action 3: separate create-new, overwrite and load paths.
Practical scenario
A wrapper combines create and overwrite modes unconditionally; selecting one explicit mode avoids it.
Retry and recovery
Retry rule: retry after replacing the mask with one valid for the persistence method.
Difference from nearby HRESULT values
DB_E_BADCOMMANDID rejects the command identifier, while DB_E_BADCOMMANDFLAGS rejects how persistence should operate.
Official Microsoft references
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