Re: D-ISAM, anybody?

Path: emory!europa.asd.contel.com!darwin.sura.net!wupost!cs.utexas.edu!sun-barr!cronkite.Central.Sun.COM!exodus.Eng.Sun.COM!appserv.Eng.Sun.COM!sun!amdcad!weitek!pyramid!infmx!aland From: aland@informix.com (Colonel Panic) Newsgroups: comp.databases.informix Summary: no thanks Keywords: C-ISAM D-ISAM Informix compatible NOT Message-ID: <1992Feb6.022434.9493@informix.com> Date: 6 Feb 92 02:24:34 GMT References: <1992Feb5.082442.5059@infoac.rmi.de> Sender: news@informix.com (Usenet News) Organization: International Brotherhood of Geeks, Local 619 In article <1992Feb5.082442.5059@infoac.rmi.de> dseismo@infoac.rmi.de (Lennartz Electronic ) writes: >Hello netlanders, > >I am getting more and more annoyed by C-ISAM's reluctance to work across >NFS links (I've yet to understand the reason why; German Informix support >techies just tell me that it is that way and that it can't be changed). Depends on the NFS implementation. If the NFS provides *guaranteed* proper support of fcntl()/flock() over NFS, then we can use it. For example, on SunOS 4.1.1 and up, C-ISAM version 4.10.UC2 and up allows NFS use. If we have to use "create" locking, there is a risk of multiple machines accessing the same file not detecting each other's locks. NFS use is checked for and forbidden; ISAM error -125 results. -125 ISAM error: can't use nfs. >I am considering moving to a product called D-ISAM which is supposed to >be compatible with C-ISAM at the file and call level, and it is available heh heh heh... read the fine print; there's plenty. No 4.X or 5.X version compatibility. Version 3.X "compatibility" omits transaction support and clustering. It's basically billed as C-ISAM 2.11 compatible; C-ISAM 2.11 is, what, 8 years old? (It's what the pre-SQL products, e.g. Informix 3.3 and File-It 1.X, are built on). Their ads don't say what locking methods they support, or whether any choices are built-in to the code. >in (purportedly portable) Unix source. Also, it can be distributed without >royalties (in compiled form). The license itself is quite clear and straightforward. >I'd like to hear educated opinions on that subject ;-) > >-- Dieter Stoll -- Alan Denney # aland@informix.com # {pyramid|uunet}!infmx!aland Confidentially, she never called me 'Baby Doll' Confidentially, I never had much pride So now I rock a barstool and I drink for two Just pondering this time bomb in my mind -- "Lucky Ball and Chain", TMBG