Re: [firebird-support] Question about few Firebird details

2016-05-24 Thread 'livius' liviusliv...@poczta.onet.pl [firebird-support]
-support] Question about few Firebird details Hi Karol, 44. This option turn off individual savepoints. Our tests proof that gives slight increase in case of massive inserts or updates. Use it with caution, since the rollback will be forced (through TIP), so if you insert less than 50k records

Re: [firebird-support] Question about few Firebird details

2016-05-23 Thread Alexey Kovyazin a...@ib-aid.com [firebird-support]
Hi Karol, 44. This option turn off individual savepoints. Our tests proof that gives slight increase in case of massive inserts or updates. Use it with caution, since the rollback will be forced (through TIP), so if you insert less than 50k records, there could be difference with and without

Re: [firebird-support] Question about few Firebird details

2016-05-23 Thread Dimitry Sibiryakov s...@ibphoenix.com [firebird-support]
23.05.2016 21:05, liviuslivius liviusliv...@poczta.onet.pl [firebird-support] wrote: > 44. Use NO_AUTO_UNDO - what happend when i do rollback? You will get hard rollback, frozen OAT counter and unavoidable run of sweep. -- WBR, SD.

[firebird-support] Question about few Firebird details

2016-05-23 Thread liviuslivius liviusliv...@poczta.onet.pl [firebird-support]
Hi,   https://ib-aid.com/en/articles/45-ways-to-speed-up-firebird-database/ i have few questions: 44. Use NO_AUTO_UNDO - what happend when i do rollback? I do not understand what really do this option.. 30. Use derived tables to optimize SELECT with ORDER BY/GROUP BY -  SELECT T.FIELD_KEY,