This is a discussion on RE: HDR unusable with 9.40 within the Informix forums, part of the Database Server Software category; --> Ajay, Thank You very much for pointing to the major reason: physical log size I took a look at ...
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| Ajay, Thank You very much for pointing to the major reason: physical log size I took a look at the 'onstat -a' output I made on both servers when I first noticed the problem: Physical log was 78% full on Secondary. That means, that blocking checkpoint was triggered by the 75% fullness of the physical log on secondary. That is, index size exceeded 75% of the physical log size I was able to create all indexes after I considerably increased physical log size on both servers. Unfortunately, that workaround (to make physical log size at least 33.3% larger then the biggest index I'm going to build from scratch) is not acceptable for our production database: we have two 5-GB detached indexes (about 2.5 mln pages) build against 30-GB tables, and our physical log is 'just' 2GB (physical log space must be contagious, and one can't allocate larger contagious space under pre-9.40). Formally, I can try to allocate 'extended capacity' 16-GB chunk under 9.40 and dramatically increase our physical log to, say, 8 or even 16 GB... Frankly speaking, I'm not going to do that for the production system, just because I'm not sure that IDS 9.40 is fully tested with PHYSFILE>2000000 (PHYSFILE limit in pre-9.40 IDS) P.S. Initial posting 'subject' should be slightly modified: HDR is unusable with 9.40 FOR LARGE SYSTEMS ------------------------------------------ Alexey Sonkin -----Original Message----- From: ajaykg68@yahoo.com [mailto:ajaykg68@yahoo.com] The bug number for this problem is 167294. Yes. Increasing physical log is a workaround. Forcing a checkpoint on primary during index transfer can avoid this problem. -Ajay Gupta Fernando Nunes <spam@domus.online.pt> wrote in message news:<2o3iftF6hbpkU1@uni-berlin.de>... > Madison Pruet wrote: > > Could you let everyone know the bug number? > > > > > > "Ajay Gupta" <ajaykg68@yahoo.com> wrote in message > > news:26ad1e92.0408121748.c164043@posting.google.co m... > > > >>Yes. This is a known bug and is fixed in later release of 9.40. > >> > >>-Ajay Gupta > >> > > Hello Ajay. > > I'm also interested in this. The description seems like a bug only > corrected in late 7.31 versions, but if it's specific to 9.40 I'm very > interested in this. > > Also if there is a tech support case it would be nice to know which is it. > > P.S.: could a bigger physical log improve the behavior? > > Kind regards, > > Fernando Nunes sending to informix-list |