Queries ???

Hi, I am currently working on Informix-5.01 . I am facing the following problems : 1. We are using OLTP/Tuxedo as Transaction Manager. The following file "libinfxxa.a" is reqd. for connecting with OLTP/Tuxedo . This file should be present in $INFORMIXDIR/lib/esql according to Tuxedo manual but I am unable to find it in the whole system . Can anyone tell me about it . 2. We have installed Informix-Star for multi servers purpose. I understand there's a script which comes as a part of INFORMIX-STAR & which when included in the .profile calls the server menu and any one of these severs can be selected to work on. Right now I don't have this script. Can anyone tell me about it ? 3. Our system functionality requires to make a physical copy of the whole database in the evening so that all the batch programs are run on it throughout the night time. There are certain utilities in informix like - dbimport/dbexport,tbunload/tbload etc. Has anyone used them extensively for such purpose? I want to clear some of the doubts regarding it . I am quite new to the system, thus I am sorry if my problem seems trivial to anybody . Thanks in advance, Namita P.S. - Please respond to me at namita@tulnepz.unisys.com