We upgraded UniVerse 10.0.11 from AIX 4.3.3 to AIX 5.2 last October. We also run Oracle and Vantive on the same box. One thing we have found is that we need to have at least twice the amount of Paging Space as real memory. If the free Paging Space gets down to zero the machine dies a horrible death. As I understand it with AIX the data is first written to the Paging Space then to memory - rather unusual. So if your Paging Space is low then you may be doing a lot of swapping out to somewhere else. After the upgrade we noticed that the batch processes were faster but we did notice a degradation in the user interface for Oracle / Vantive although not noticeable with UniVerse. When you run topas check to see if there are any processes consuming large amounts of cpu constantly. One of our non-UniVerse applications suffers from run-aways and we see them consuming one cpu each constantly. Fortunately we have 4 cpus so can live with these run-aways (as we cannot remove them without dropping multiple users in critical applications). If you get more run-aways AIX will drop their priority so this will become less obvious - but it will affect all users of the machine. It is not common to have UniVerse run-aways but we have seen it infrequently. If you see a process consuming high cpu look at it in PORT.STATUS to see what it is doing. Check you are not using PORT.STATUS for any utilities that run often. This can have a major effect on the performance of the machine. Also topas has an effect as well. We are not running any ML patches on our production machine as neither ML1 nor ML2 are compatible with one of our other applications - the one that runs away. Generally we are very pleased with the performance on AIX - only management wants us to move from this platform. Our approx specs are p660, 4 cpu, 6Gb RAM, 12Gb Paging Space Universe 10.0.11, 320 users Oracle 9.2 - usually about 600 oracle processes Vantive 9 - 100 processes each with up to 5 threads Sara Burns Sara Burns (SEB) Development Team Leader
Public Trust Phone: +64 (04) 474-3841 (DDI) Mobile: 027 457 5974 < <mailto:[EMAIL PROTECTED]> mailto:[EMAIL PROTECTED]> Information contained in this communication is confidential. If you are not the intended recipient the information should not be used, disclosed, copied or commercialised. The information is not necessarily the views nor the official communication of Public Trust. No guarantee or representation is made that the communication is free of errors, virus or interference. -- u2-users mailing list [EMAIL PROTECTED] http://www.oliver.com/mailman/listinfo/u2-users
