Cause: Attempted to stream lob data via the polling mode or a callback when lob buffering was enabled for the input lob locator. See the solution below.

Error solution: Lob buffering is useful when reading/writing small amounts of lob data so streaming should not be necessary. Rewrite the OCILobRead/OCILobWrite call so that it does not use streaming. If streaming of data is required, lob buffering should not be used. In this case, flush buffers associated with the input lob locator as necessary, disable buffering on the input lob locator and reissue the OCILobRead/OCILobWrite call.