Re: [firebird-support] port requirements for Firebird Services API - IBAnalyst
Follow-up on this issue... The problem was that an old copy of gdb32.dll was sitting in C:\Windows\SysWOW64. That was loaded before IBAnalyst tried to use fbclient.dll, and it was not suitable. The solution was to copying the recent 32-bit fbclient.dll to gds32.dll in the same folder as IBAnalyst.exe. There was no mysterious firewall issue whatsoever. Many thanks to Alexey at IBSurgeon for all the off-list emails and remote support to resolve this. Ann
[firebird-support] How to convert big FIREBIRD DB to one charset (win1251) to UTF8 ?
I need your help and/or suggestions to solve a (maybe uncommon) task. I searched a lot on the web and I had some success using a tool called fbclone but this is definitely not a solution (due to extreme slowness of the conversion, many days, something must be wrong with this software) I have a large Firebird 2.5 DB (a couple of tables have few millions records) to convert from WIN1251 charset to UTF8 charset. Is there a way to do efficiently this kind of conversion? (preferably not using a intermediate text sql dump, that would not applicable because the size of the DB). I'm using Firebird on a linux machine, and I really like to do the job using a bash script, but I can fallback also using a remote Windows pc. Thanks for any suggestions. Best regards.
[firebird-support] Firebird 2.5 built on AIX 6.1 - core dump
Hi All, I'm trying to built FB from the source code v. 2.5.2.26540-0 on AIX 6.1 (PPC). I've made some minor changes in the build script to let it create ./configure script, also a couple of source code files slightly changed (mostly to avoid conflicts). But now I'm facing a problem - attempt to create/access to DB file causes core dump in Jrd::LockManager::attach_shared_file() function. Actually, it happens during the build when empty.fdb and other DB files are created. Manually retrying create_db I can get all all .fdb files created (files are created in spite of core dump). AIX 6.1 PPC, XL C++ compiler My settings: export CC=xlc_r export CXX=xlC_r export CFLAGS=-q64 -gxlc export CXXFLAGS=-q64 -gxlC ./autogen.sh --enable-debug=yes this is the core stack of create_db: (gdb) where #0 0x00010037945c in Jrd::LockManager::attach_shared_file( (long *)) (this=0x7006fa0, status=0xfffe660) at ../src/lock/lock.cpp:344 #1 0x00010038aa9c in __ct__Q2_3Jrd11LockManagerFRCQ2_8Firebird10StringBaseXTQ2_8Firebird16StringComparator_ ( this=0x7006fa0, id=@0xfffef50: ???) at ../src/lock/lock.cpp:232 #2 0x00010038ae98 in create__Q2_3Jrd11LockManagerFRCQ2_8Firebird10StringBaseXTQ2_8Firebird16StringComparator_ ( id=@0xfffef50: ???) at ../src/lock/lock.cpp:182 #3 0x00010026d6a8 in jrd8_attach_database (user_status=0x6d0, filename=0x7008c60 error: Cannot access memory at address 0x7008c60, handle=0x318, dpb_length=17, dpb=0x4c8 \001M) at ../src/jrd/jrd.cpp:1039 #4 0x0001000a64e8 in isc_attach_database (user_status=0x6d0, file_length=0, file_name=0xa55 empty.fdb, public_handle=0x770, dpb_length=4, dpb=0x7b8 \001@\001\001П) at ../src/jrd/why.cpp:1493 #5 0x00011338 in main (argc=2, argv=0x910) at ../src/utilities/create_db.cpp:49 Any ideas what should I do to make it working would be appreciated. Thanks.
[firebird-support] Update only changed tuple/ execute if-statement via execute statement?
Hello, I would be very happy if anybody could help me. I want to create a update trigger which sets the current date to a field modified if values has changed. I have a lot of tables with a lot of columns so i want to work with system table for that task. I build the if-statement within a select and wat to execute this statement Like: CREATE TRIGGER PLZTEST_MODIFIED FOR PLZTEST ACTIVE BEFORE UPDATE POSITION 0 AS declare variable stmt varchar(1024); begin for select 'if (new.' || rdb$field_name || ' is null and old.' || rdb$field_name || ' is not null or new.' || rdb$field_name || 'is not null and old.' || rdb$field_name || ' is null or new.' || rdb$field_name || ' old.' || rdb$field_name || ') then new.MODIFIED = current_timestamp;' from rdb$relation_fields where rdb$relation_name = 'PLZTEST' into :stmt do execute statement stmt; end The resulting statement looks good. The problem here seems, that i could not execute statements starts with if. the error occur is Dynamic SQL Error. SQL error code = -104. Token unknown - line 1, column 1. if. Or maybe is there another way to realise that? Thank you in advance
RE: [firebird-support] Update only changed tuple/ execute if-statement via execute statement?
Hello, I would be very happy if anybody could help me. I want to create a update trigger which sets the current date to a field modified if values has changed. I have a lot of tables with a lot of columns so i want to work with system table for that task. I build the if-statement within a select and wat to execute this statement Like: CREATE TRIGGER PLZTEST_MODIFIED FOR PLZTEST ACTIVE BEFORE UPDATE POSITION 0 AS declare variable stmt varchar(1024); begin for select 'if (new.' || rdb$field_name || ' is null and old.' || rdb$field_name || ' is not null or new.' || rdb$field_name || 'is not null and old.' || rdb$field_name || ' is null or new.' || rdb$field_name || ' old.' || rdb$field_name || ') then new.MODIFIED = current_timestamp;' from rdb$relation_fields where rdb$relation_name = 'PLZTEST' into :stmt do execute statement stmt; end The resulting statement looks good. Are you sure? I’ve never tried doing what you’re doing, but would (unfortunately) be surprised if new.* and old.* was available in rdb$relations_fields. The problem here seems, that i could not execute statements starts with if. the error occur is Dynamic SQL Error. SQL error code = -104. Token unknown - line 1, column 1. if. Or maybe is there another way to realise that? Rather than writing a general trigger for modifying any table, I think I would recommend that you write a stored procedure that takes a table name as an input parameter that then dynamically creates a CREATE OR ALTER TRIGGER statement specifically targeted towards the table in question (hence a stored procedure that creates specific triggers (DDL) as opposed to one generic trigger). By the way, if you’re using Firebird 2.x, it’s simpler to use IS DISTINCT FROM which treats NULL as if it was a value and have one rather than three comparisons for each field. HTH, Set
RE: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance
Hi Alexey,Here is where I read it. Page 7. PPT Presentation during FDD 2012, Brazil.http://www.slideshare.net/ibsurgeon/resolving-firebird-performance-problems#Keep in mind, we are still using 1.5 FB.Thank you,-Halim To: firebird-support@yahoogroups.com From: firebird-support@yahoogroups.com Date: Fri, 30 May 2014 08:06:04 +0400 Subject: Re: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance Halim, It is out of context. Recent 2.5.2 has no such problem. Where did you read it? Regards, Alexey Kovyazin IBSurgeon 30.05.2014 4:41 пользователь halim1...@hotmail.com [firebird-support] firebird-support@yahoogroups.com написал: We recently upgraded our database server from Win server 2003 to Win 2008 server. We upgraded hardware as well. The new hardware (IBM x3550 M4) is way more advanced than the old one. 4 times the RAM and CPU speed. We ran some tests on the new hardware(a few select/update queries), the performance was way less than the old server using the same database. I read somewhere on one of IB Surgeon slides that All architectures of 32 bit Firebird will work bad at 64-bit Windows with 4Gb RAM. Since we can't upgrade our Firebird DB to 2.x, Do we need to downgrade our OS to a 32 bit version and install less RAM to gain a little more performance or we missing something else? Thanks, -Halim
Re: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance
Halim, Ok, thank you. 1.5 is really old, upgrade asap. Regards, Alexey Kovyazin Hi Alexey, Here is where I read it. Page 7. PPT Presentation during FDD 2012, Brazil. http://www.slideshare.net/ibsurgeon/resolving-firebird-performance-problems# Keep in mind, we are still using 1.5 FB. Thank you, -Halim To: firebird-support@yahoogroups.com From: firebird-support@yahoogroups.com Date: Fri, 30 May 2014 08:06:04 +0400 Subject: Re: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance Halim, It is out of context. Recent 2.5.2 has no such problem. Where did you read it? Regards, Alexey Kovyazin IBSurgeon 30.05.2014 4:41 пользователь halim1...@hotmail.com mailto:halim1...@hotmail.com [firebird-support] firebird-support@yahoogroups.com mailto:firebird-support@yahoogroups.com написал: We recently upgraded our database server from Win server 2003 to Win 2008 server. We upgraded hardware as well. The new hardware (IBM x3550 M4) is way more advanced than the old one. 4 times the RAM and CPU speed. We ran some tests on the new hardware(a few select/update queries), the performance was way less than the old server using the same database. I read somewhere on one of IB Surgeon slides that All architectures of 32 bit Firebird will work bad at 64-bit Windows with 4Gb RAM. Since we can't upgrade our Firebird DB to 2.x, Do we need to downgrade our OS to a 32 bit version and install less RAM to gain a little more performance or we missing something else? Thanks, -Halim
RE: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance
Will do.Thank you.-Halim To: firebird-support@yahoogroups.com From: firebird-support@yahoogroups.com Date: Fri, 30 May 2014 14:31:07 +0400 Subject: Re: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance Halim, Ok, thank you. 1.5 is really old, upgrade asap. Regards, Alexey Kovyazin Hi Alexey, Here is where I read it. Page 7. PPT Presentation during FDD 2012, Brazil. http://www.slideshare.net/ibsurgeon/resolving-firebird-performance-problems# Keep in mind, we are still using 1.5 FB. Thank you, -Halim To: firebird-support@yahoogroups.com From: firebird-support@yahoogroups.com Date: Fri, 30 May 2014 08:06:04 +0400 Subject: Re: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance Halim, It is out of context. Recent 2.5.2 has no such problem. Where did you read it? Regards, Alexey Kovyazin IBSurgeon 30.05.2014 4:41 пользователь halim1...@hotmail.com [firebird-support] firebird-support@yahoogroups.com написал: We recently upgraded our database server from Win server 2003 to Win 2008 server. We upgraded hardware as well. The new hardware (IBM x3550 M4) is way more advanced than the old one. 4 times the RAM and CPU speed. We ran some tests on the new hardware(a few select/update queries), the performance was way less than the old server using the same database. I read somewhere on one of IB Surgeon slides that All architectures of 32 bit Firebird will work bad at 64-bit Windows with 4Gb RAM. Since we can't upgrade our Firebird DB to 2.x, Do we need to downgrade our OS to a 32 bit version and install less RAM to gain a little more performance or we missing something else? Thanks, -Halim
Re: [firebird-support] Update only changed tuple/ execute if-statement via execute statement?
On Sat, May 24, 2014 at 8:51 AM, eric wulfhekel eric.wulfhe...@gmail.com [firebird-support] firebird-support@yahoogroups.com wrote: I want to create a update trigger which sets the current date to a field modified if values has changed. I have a lot of tables with a lot of columns so i want to work with system table for that task. I build the if-statement within a select and wat to execute this statement I've left your example below. You're on the right track. The actual problem you're having is that EXECUTE STATEMENT executes SQL statements. You're generating a statement that can be used only in triggers and stored procedures. As Set suggested, a better plan would be to use your current approach, but generate actual CREATE TRIGGER statements rather than the PSQL. Yes, that means that you will need to recreate triggers when your tables change, but you may be able to do that - or at least signal that maintenance is required - with a DDL trigger. Alternately you could generate a series of SQL statements - UPDATE ... WHERE NEW.field IS DISTINCT FROM OLD.field - and execute them. However, that would be horribly inefficient - searching the system tables, generating a query, passing that query to the engine where it has to be parsed, compiled, optimized, executed, and released - all of that for every field in every record you change. I'd bet that performance would be measured not by wall clock, but by calendar. Good luck, Ann Here's the statement you tried and the error... CREATE TRIGGER PLZTEST_MODIFIED FOR PLZTEST ACTIVE BEFORE UPDATE POSITION 0 AS declare variable stmt varchar(1024); begin for select 'if (new.' || rdb$field_name || ' is null and old.' || rdb$field_name || ' is not null or new.' || rdb$field_name || 'is not null and old.' || rdb$field_name || ' is null or new.' || rdb$field_name || ' old.' || rdb$field_name || ') then new.MODIFIED = current_timestamp;' from rdb$relation_fields where rdb$relation_name = 'PLZTEST' into :stmt do execute statement stmt; end The resulting statement looks good. The problem here seems, that i could not execute statements starts with if. the error occur is Dynamic SQL Error. SQL error code = -104. Token unknown - line 1, column 1. if. Or maybe is there another way to realise that? Thank you in advance
RES: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance
Maybe you dont have a HDD cached controller. Run a program like Crystal Disk Mark in the old computer and in the new computer. If the performance of new computer is terrible you must change your physical hard disk controller. I had this problem with a Dell server that is a “internet server” (without cache) instead of a “Database serve”. De: firebird-support@yahoogroups.com [mailto:firebird-support@yahoogroups.com] Enviada em: quinta-feira, 29 de maio de 2014 21:42 Para: firebird-support@yahoogroups.com Assunto: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance We recently upgraded our database server from Win server 2003 to Win 2008 server. We upgraded hardware as well. The new hardware (IBM x3550 M4) is way more advanced than the old one. 4 times the RAM and CPU speed. We ran some tests on the new hardware(a few select/update queries), the performance was way less than the old server using the same database. I read somewhere on one of IB Surgeon slides that All architectures of 32 bit Firebird will work bad at 64-bit Windows with 4Gb RAM. Since we can't upgrade our Firebird DB to 2.x, Do we need to downgrade our OS to a 32 bit version and install less RAM to gain a little more performance or we missing something else? Thanks, -Halim
Re: RES: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance
We recently had to deal with this issue. Going from 2003 32bit to 08 64bit. The problem is the way FB utilizes system memory when using an older version on a 64bit system. We upgraded to 2.5.2 64bit and it gave us more options for tweaking the usage of system memory VS FB cache. It also fixed FB's memory bug on 64bit systems. Completely solved our issue. We also did a bunch of other tweaks that really helped. Let me know if you need any help with this. -Josh _*Josh Hartmann*_ Senior Engineer COMPUtek Dental Systems P: 970-224-4022 F: 970-224-4001 On 05/30/2014 09:38 AM, 'Fabiano - Desenvolvimento SCI' fabi...@sci10.com.br [firebird-support] wrote: Maybe you dont have a HDD cached controller. Run a program like Crystal Disk Mark in the old computer and in the new computer. If the performance of new computer is terrible you must change your physical hard disk controller. I had this problem with a Dell server that is a “internet server” (without cache) instead of a “Database serve”. De: firebird-support@yahoogroups.com [mailto:firebird-support@yahoogroups.com] Enviada em: quinta-feira, 29 de maio de 2014 21:42 Para: firebird-support@yahoogroups.com Assunto: [firebird-support] Firebird 1.5 on 64bit OS. Newer Hardware but bad performance We recently upgraded our database server from Win server 2003 to Win 2008 server. We upgraded hardware as well. The new hardware (IBM x3550 M4) is way more advanced than the old one. 4 times the RAM and CPU speed. We ran some tests on the new hardware(a few select/update queries), the performance was way less than the old server using the same database. I read somewhere on one of IB Surgeon slides that All architectures of 32 bit Firebird will work bad at 64-bit Windows with 4Gb RAM. Since we can't upgrade our Firebird DB to 2.x, Do we need to downgrade our OS to a 32 bit version and install less RAM to gain a little more performance or we missing something else? Thanks, -Halim
