Sorry if this response is a little off-topic. 1) T24 continues to use jBase locking in all releases, additionally locking data may be maintained in the F.RECORD.LOCK file to aid the stateless nature of the T24 Browser. 2) F.OS.TOKEN and F.OS.TOKEN.USE play no part in T24 record locking 3) NFS or GPFS can be used to share the &HOLD& directory but no longer play a part in Locking for Multi-Server T24 installations (although they could...) 4) Indexes can be added locally where appropriate after thorough investigation of performance bottlenecks where no other mechanism is possible (although there are almost always alternative approaches) 5) Online Commit / Rollback is implemented via the T24 TXN.UPDATE utility which MUST be used once and once only for every logical transaction. 6) Triggers are not encouraged due to point 5 and their failure in a T24 context of ensuring an ACID compliant transaction. 7) T24 is oriented for banking and as such is incredibly complex; people must ensure they understand the application before tinkering. 8) I chose the word tinkering on purpose.
There may be many things that need addressed in T24 but please lets not add imaginary issues. Many thanks, John. On Apr 13, 9:23 am, vianney lorieux <[email protected]> wrote: > hi, > From R6 version T24 don't use locks using shared memories but files F.TOKEN, > F.TOKEN.USE and F.RECORD.LOCK for a multi server configuration. > About NFS i don't heard anything about this possibility. T24 is a very poor > implementation of jBASE. No index, no trigger no commit-rollback (in COB > only). > T24 is oriented for banking! > > 2009/4/12 Pawel (privately) <[email protected]> > > > > > > > Hi, > > > As far as I remember (and I was not doing this setup) NFS on AIX required > > special mount parameter(s) which assured proper sharing of file locks > > between (T24) application servers. > > I think that jBASE in native locking mode uses "flock" function to lock > > records. Therefore such kind of (filesystem) locks must be properly handled > > on NFS mounted device. I think also that it required lockd deamon to be run > > under AIX. > > > Hope I am not misleading you :) Please correct me if I am wrong. > > > Kind regards > > Pawel > > > Dnia 10-04-2009 o godz. 8:35 Geniester Gennefer napisał(a): > > > Hi, > > Yes its T24 -R8 release with browser. > > How about using NFS technique ? > > > Thanks, > > > 2009/4/9 Pawel (privately) <[email protected]> > > >> Hi, > > >> I think he is - T24 R08. > > >> 1. You need to install jBASE on all 3 application (T24) servers. > >> 2. You need to put your jBASE data files into shared drive / SAN and > >> mount this resource on all (T24) application servers. > >> 3. You need to make sure that record locking on all T24 application > >> servers is working well (simple test). You may use jDLS or native > >> filesystem locking. Second one will require some special work from you I > >> guess. I am not sure if it is possible to use native locking mechanism > >> under Windows. > > >> By the way: Are you going to use Browser? > > >> Kind regards > >> Pawel > > >> Dnia 7-04-2009 o godz. 15:09 Mike Preece napisał(a): > >> > Is your application T24? > > >> > On Apr 6, 7:46 am, Geniester Gennefer <[email protected]> > >> > wrote: > >> > > Hi All, > >> > > For a client we have 3 tier architecture of servers i.e Application, > >> > > Webserver & Database Server. > >> > > Currently we have installed jbase 5 in database server. R8 database in > >> > > application server, how do we establish connectivity between > >> Application & > >> > > database servers. > >> > > Are there any jbase drivers catering to this ,if so which one we will > >> have > >> > > to use on windows 2003 (64 bit) machine?? > >> > > Please advise on methods, > > >> > > Thanks, > > > ---------------------------------------------------- > > Wyślij kurczaka na święta - Kliknij: > > >http://klik.wp.pl/?adr=http://corto.www.wp.pl/as/wielkanocnykurczak.h... > > -- > Vianney LORIEUX > 18,cours des Juilliottes > 94700 MAISONS-ALFORT > 0 149 770 846 > [email protected] Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ Please read the posting guidelines at: http://groups.google.com/group/jBASE/web/Posting%20Guidelines IMPORTANT: Type T24: at the start of the subject line for questions specific to Globus/T24 To post, send email to [email protected] To unsubscribe, send email to [email protected] For more options, visit this group at http://groups.google.com/group/jBASE?hl=en -~----------~----~----~----~------~----~------~--~---
