Re: Migration from 5.01 to 7.2

On 24 Jun 1997, MS CARLEEN C AVANT wrote: > I am a federal employee for the Naval Safety Center in Norfolk, Virginia. [Grin] That's good to know. > We currently are running Informix 5.01.UD1 on a Bull DPX380 using BOS 68k > 2.x operating system which is simply a sys V rel 4. We are migrating to a > Sun E3000 and E4000 utilizing Informix 7.2 engine and 6.x tools. Hrm. That's a healthy jump altogether. > We would welcome any input regarding experiences, knowledge, etc. regarding > this migration effort. Well, we've done one sun 5->7 port, and a heckuva lot of IBM and HP ones... > One particular "burning" question we have is will our current applications > utilizing 4.x tools migrate "transparently" to 7.2 engine utilizing 6.x > tools? We have been lead to believe they will. You have been mislead. The vast majority of your functionality will remain the same, but there are enough little differences to bite you. Even little things, like the way a NULL string is shown in a DISPLAY statement (I know, but it happens) can change. Believe it or not, that one we even got a real genuine Informix patch for! The most important thing is not to treat this as a recompile, but as a full port. Everything needs retesting, for instance. We pretended that it just meant a rebuild (at first, a while back, before I was here). A big mistake indeed. Its well worth getting training in the new 7.x engine features as well, the expanded onstat commands by themselves are a great help. > Thanks in advance. Let me (or the group) know if you have any specific questions or concerns & I (or someone else) will be happy to chat about 'em, I'm sure. -Richard