Re: Long running backup after upgrading tp 7.31FC7X4

It is unfortunate but just now I have been told by Informix that bug 101062 AKA "updating old page error " which existed in prior version is not fully fixed. They are coming out with some sort of patch. Let us all jump on Informix because they told us that it is fixed in the new version i.e. 7.31FC7 and now this. Vivek ----- Original Message ----- From: <brett_s_rREMOVECAPITALS@hotmail.com> To: <informix-list@iiug.org> Sent: Wednesday, January 03, 2001 1:54 PM Subject: Re: Long running backup after upgrading tp 7.31FC7X4 > Check the outputs of onstat -b and onstat -u when the slowdown occurs. > I have seen similar symptoms where the archive started "writing" pages > to disk, slowing down the archive (but not the normal-expected level of > physical page "before copy" writes on the system). This (surprisingly) > seemed to cause no corruption with the system. > > However, the system was using ontape. The problem was also highly > intermittent on the system. > > Tech Support recognised the problem as a known issue. I'm not sure of > the "fix release". If you see your archive threads doing frenzied > writes (particularly if you have a "quiet backup window"), then you > could expect the same problem. > > BTW - the Tech Support issue was with "archive incorrectly interpreting > modification timestamps on pages". > > Brett Randall > > Frank wrote: > > > > Hi, > > > > I have a problem where my backups have jumped from a 6-8 hour window to 18+ > > hours after upgrading from 7.30FC6 to 7.31FC7x4. I am using onbar with > > Legato Networker as the storage manager. I have really erratic backup > > behaviour. The backups go to four DLT7000 tape drives, and all four drives > > start writing at 10Mb/sec + (including hardware and software compression). > > However, after the first hour, the throughput to every tape drive drops > > dramatically. > > > > The OS is Tru64 V4.0D. > > > > Any suggestions gratefully received. > > > > Thanks, > > > > Paul. >

In article <930di2$l57$1@news.xmission.com>, vivek chaudhary <vivek.chaudhary@st.com> writes > >It is unfortunate but just now I have been told by Informix that bug 101062 >AKA "updating old page error " which existed in prior version is not fully >fixed. They are coming out with some sort of patch. > >Let us all jump on Informix because they told us that it is fixed in the new >version i.e. 7.31FC7 and now this. > >Vivek > Well....I had been told by UK Tech Support that this was patched by creating a deamon thread which went and updated any timestamps which are too old. Sounds like perhaps the new thread is going a bit mad ...Completely hatstand! And we all though UC7 would be the next one after UC4 that had no serious bugs (UC5 has optmization problems and UC6 can't rollback large index builds which hit a long transaction!) Roll on 7.31.UC8, when it is due? -- David Williams