conn
is a pointer to the connection descriptor that a previous call to mi_open() or mi_server_connect() has established.
filename
must be NULL.
flags
must be MI_LO_INTERNAL_LO.
mode
smgr
is the storage manager on which the object is created. Currently, the only valid value is MI_LO_DEFAULT_SMGR.
asmgr
is the archive storage manager for the smart large object. Current legal values are MI_LO_DEFAULT_SMGR, MI_LO_NOSMGR, and NULL. Currently, no difference exists among these values.
smgropts
asmgropts