yacLobDescAlloc2函数用于在LOB协议中为loblocator分配空间,返回YAC_SUCCESS表示空间分配成功,返回YAC_ERROR表示空间分配失败。
YacResult yacLobDescAlloc2(YacHandle hConn, YacLobLocator** desc);
yacLobCreateTemporary2 yacLobDescFree2