If the program that uses Callable RDO (RDB$INTERPRET) is linked
    implicitly with SYS$SHARE:RDBINTSHR (that is, allows the OpenVMS Linker
    utility (LINKER) to resolve the reference using
    SYS$LIBRARY:IMAGELIB.OLB) then the message vector and transaction handle
    values are not returned to the caller.

    However, if the program is linked explicitly with SYS$SHARE:RDBINTSHR
    as the following example shows, then message vector and transaction
    handle values are returned.  In this case, there must be two PSECTs
    declared and named RDB$TRANSACTION_HANDLE (8 bytes long) and
    RDB$MESSAGE_VECTOR (20 longwords, that is, 80 bytes long) in the
    caller's program.

    $ LINK PROGRAM,SYS$INPUT/OPT
    SYS$SHARE:RDBINTSHR.EXE/SHARE
    PSECT_ATTR=RDB$MESSAGE_VECTOR,SHR
    PSECT_ATTR=RDB$TRANSACTION_HANDLE,SHR

    However the explicit linking against the shareable image
    SYS$SHARE:RDBINTSHR is not upward compatible and the application will
    need to be relinked for each new version of Oracle Rdb released.

    There is no workaround for this problem.