Thanks Mark. From: firebird-support@yahoogroups.com <firebird-support@yahoogroups.com> Sent: Tuesday, 1 May 2018 5:34 PM To: firebird-support@yahoogroups.com Subject: Re: [firebird-support] Transaction ID overflow
On 1-5-2018 09:19, Brian Dunstan brian.duns...@health.telstra.com<mailto:brian.duns...@health.telstra.com> [firebird-support] wrote: > Hi, > > We have a big customer here who processes large numbers of transactions into > a large database and plans to not backup and restore. They should plan for backups and tests restores. But if you reach the transaction limit, then there is really no choice but to backup and restore. > We are using Dialect 3. I think that means that the TID is 32 bits. I think > that means they get 4,294,967,296 transactions before overflow - I'm assuming > the TID is an unsigned integer. Is that correct? In Firebird 2.5 and earlier the transaction id is 32 bit. If I'm not mistaken, it is signed (so effectively 31 bits) with a maximum transaction id of 2^31 - 1. > If we move to dialect 3, does the TID become 64 bits? I assume you mean Firebird 3. In Firebird 3 the transaction id is 48 bits (unsiged), the maximum transaction id is 2^48. -- Mark Rotteveel
