Hello, All.
Theoretical question: must every connection provide a valid key, or first
connection
unlock the database for everyone?
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17.11.2015 18:01, Leyne, Sean wrote:
>> - Client application set callback for providing a key
> I don't understand why client needs to know anything about whether database
> is encrypted or not.
This step depends on implementation of KeyHolder plugin and may be not
required.
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17.11.2015 17:40, Leyne, Sean wrote:
> For me, the sequence of operations for accessing a database would be:
>
> - Client initiates connection to remote server, requesting access to database
> XYZ.fdb (there is nothing new in the connection string other than what is
> available now)
> - engine
Hello, All.
Which code for establishing two connections is right?
This one:
IProvider* disp = master->getDispatcher();
IAttachment* att1 = disp->attachDatabase(status, "DB1", 0, NULL);
IAttachment* att2 = disp->attachDatabase(status, "DB2", 0, NULL);
Or this one:
IProvider* disp1
09.11.2015 9:56, Alex Peshkoff wrote:
>> > Is callback set with subj supposed to work with custom key holder
>> > plugin only?
>> >
> It should work with any key holder.
But there is no default key holder, that's why it doesn't work by default.
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30.10.2015 12:24, Alex Peshkoff wrote:
> You did not pay attention to
>> >There are 2 types of plugin configuration
> As a minimum them must be separated one from another
Frankly, I see no point in "two types of plugin configuration".
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30.10.2015 12:28, Alex Peshkoff wrote:
> I can agree with it. Just to make it explicit - a method of locating
> file with_internal_ configuration values by name of plugin with
> extension changed to .conf must be dropped in that case. Is it OK?
To make explicit:
a) Every plugin has
30.10.2015 13:25, Alex Peshkoff wrote:
> But Adriano is talking about a place for information that currently must
> go into plugins.conf and we try to find a solution that does not require
> editing plugins.conf when such info must be set on plugin install.
AFAIU, Adriano said that config from
30.10.2015 13:35, Adriano dos Santos Fernandes wrote:
> I said that external plugins are not loaded without editing Firebird
> supplied configuration files.
Avalerion's CDC plugin is loaded perfectly well without editing plugins.conf.
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Hello, All.
I've managed to encrypt a database using sample DbCrypt plugin. But after
command
"alter database decrypt" database is still encrypted:
> Data pages: total 46, encrypted 45, non-crypted 1
> Index pages: total 56, encrypted 56, non-crypted 0
> Blob pages: total 0, encrypted 0,
Hello, All.
Is configuration when DB encryption key is provided by key holder configured
in
firebird.conf on client side supposed to work at all?
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07.11.2015 15:49, Vlad Khorsun wrote:
>> Is it too late to include most of page header into encrypted part of a
>> page, leaving
>> >unencrypted only page type and flags?
> For what ? IIRC, pag_scn and pag_pageno is required for physical backup
> to be not encrypted
To make
Hello, All.
Is callback set with subj supposed to work with custom key holder plugin
only?
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07.11.2015 15:57, Vlad Khorsun wrote:
> I'd say it will be good to have ability to validate encryption key when
> it is passed into the engine. I.e. not at every page read
Say, a malefactor has algorithm, but not a key (which is usual situation in
OSS world).
In this case it is easy to
Hello, All.
Is it too late to include most of page header into encrypted part of a page,
leaving
unencrypted only page type and flags?
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Hello, All.
Because currently there is no checksum on db pages (even a fake one), there
is no way
to check if a page was decrypted right. As the result, any application that
provide a
wrong key, crash the engine and whole server.
Any thoughts?..
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Hello, All.
Plugin factory can produce only one type of plugin? If my module provides
several
plugins, I have to create separate factories for each one?
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05.11.2015 14:27, Alex Peshkoff wrote:
> Did not check that code for a long time.
> How to reproduce?
1) Compile the plugin
2) Set "Auto" to "Y" in its config
3) In isql execute commands "create database "test"; alter database encrypt
with
"DbCrypt_example"; alter database decrypt;"
That's
Hello, All.
Something must be wrong with recent network changes because after executing
following
script I'm getting in firebird.log number of "INET/inet_error: read errno =
10054" errors
equal to number of unsuccessful connection attempts.
connect localhost:test user sysdba password
Hello, All.
Example application works for embedded database access, but not for remote.
Is it as
expected?
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06.11.2015 9:34, Alex Peshkoff wrote:
> On 11/05/2015 06:59 PM, Dimitry Sibiryakov wrote:
>> Is configuration when DB encryption key is provided by key holder
>> configured in
>> firebird.conf on client side supposed to work at all?
>
> No.
Are there some theor
06.11.2015 14:39, Alex Peshkoff wrote:
> On linux I do not reproduce this:
One or more unsuccessful attempts AND then a successful one is a requirement.
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19.10.2015 16:03, Vlad Khorsun wrote:
> It is bad idea, believe me. Better idea is to provide dump of process
> memory:
Taing into account that "MiniDumpWriteDump may not produce a valid stack
trace for the
calling thread", it is better to use both.
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15.10.2015 15:51, marius adrian popa wrote:
> In InterBase 7 is changed so procedure and trigger programming language to no
> longer
> require the use of SET TERM
IMHO, this is unnecessary complication of isql's parser. I'd prefer to
follow KISS concept.
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15.10.2015 22:32, Norman Dunbar wrote:
> No set term is required. These are the default terminators, and effectively,
> for Oracle,
> the only two required.
Nevertheless, SQL*Plus has command SET SQLT[ERMINATOR].
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15.10.2015 18:14, Tony Whyman wrote:
> counting BEGIN/END block nesting is not the most complex of programming
> problems.
Yes, but current parser operates with plain stream of bytes. Splitting it to
separate
lexical units is a higher level of complexity and, I'm afraid, will slow it
down.
16.10.2015 15:01, Ivan Přenosil wrote:
> There are actually two separators/terminators - one to be used in scripts
> to separate commands, one to be used inside PSQL commands.
> The whole problem is caused by the fact that somebody chose
> the same character for both.
> So the solution by Adriano
Hello, All.
Subj, actually, on Windows with MSVC 2010 Express.
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Hello, All.
Is there a method to dump call stack on Windows into firebird log in some
useful form
to find out how a routine got called?
Igor Valchenko seems to be able to reproduce a very old problem with
unexpected server
shutdown during BLOB operation and I would like to see where
Hello, All.
In BuildExecutableInstall.bat I see following comment:
> :: External docs aren't necessary for a snapshot build, so we don't throw
> :: an error if FB_EXTERNAL_DOCS is not defined. On the other hand,
> :: if the docs are available then we can include them.
But in reality
Hello, All.
Since operation mode is now configured in config file, does firebird.exe
still require
-m switch to be multi-threaded?
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07.10.2015 14:06, Alex Peshkoff wrote:
> Paul, taking into an account that it was written by non-native english
> speaker it's more than possible. Can you suggest a better text?
Text is irrelevant. Just remove apostrophes from examples of patch and/or
write example
with full syntax.
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13.10.2015 16:09, marius adrian popa wrote:
> noticed this issue on wikipedia
All this and many side-effects are already in tracker waiting for fix.
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18.11.2015 18:27, Leyne, Sean wrote:
> this is solution should be described in the context of how the embedded
> engine will support encryption. This thread was about SS/other engines.
There is no such things in Firebird 3. Only one engine is used everywhere.
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18.11.2015 16:48, Mark Rotteveel wrote:
> You don't seem to realise how hard it is to implement a protocol if you
> only have hard to follow source code available in a language you are not
> fluent in, and when some cases seem to work and others don't. I am
> seriously considering to quit
18.11.2015 18:55, Leyne, Sean wrote:
> What is the sequence of operations for server-side key management?
Crypt plugin either get the key somehow itself, or ask all configured key
holder
plugins for it.
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18.11.2015 19:05, Alex Peshkoff wrote:
> In remote case it will have to send secret key over
> the wire to probably modified engine. No idea how can it be secure.
Server security is not our thing.
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18.11.2015 19:36, Alex Peshkoff wrote:
> But Iagree, from all other aspects placing databases ID in RDB$Database
> table is better.
MON$DATABASE if you wish.
> For example it's stored encrypted.
What's the point?
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14.11.2015 23:16, Jim Starkey wrote:
> So here's a simple scheme. The basic idea of a redundant set of
> lightweight key servers running at various points in the network. When a
> database wants to start up, it runs through a list of key server
> addresses looking for one that is actually
18.11.2015 22:32, Dmitry Yemanov wrote:
>> >as long as UUID and Crypt Database ID are understood to be separate values
> Here I completely agree.
Ok, I, actually, don't care which one my plugin will get. All I need is
something for
key holder to make decision which key it must return.
31.08.2015 18:38, Геннадий Забула wrote:
> For example, I have a storage container implemented as a file (VHD or
> DD image, no matter) and want to use database placed in it without
> extraction to OS filesystem.
Firebird database IS a file, and tables in it can be used witout their
31.08.2015 19:03, Геннадий Забула wrote:
> We are researching transparent encryption for a database file.
It is done via encryption plugin. Loot at examples in 3.0 source tree.
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01.09.2015 15:51, Mark Rotteveel wrote:
> As an aside: I notice that the performance of this build seems to be
> very poor compared to a normal Firebird build. The Jaybird test class
> TestFBDatabaseMetaData takes 11 seconds on a normal Firebird 3 build,
> but with the build above it takes 76
01.09.2015 16:12, Mark Rotteveel wrote:
> Ok. I suspected that, but I found the factor 7 difference worthy to mention.
You can try a fresh release build from http://www.ibphoenix.com/ibpr_devel/
to compare
speed.
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16.09.2015 11:56, Vlad Khorsun wrote:
> Just run make_boot and newly generated firebird.msg have size 148104
> bytes.
May be Paul got French one in UTF-8?..
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17.09.2015 17:07, Paul Reeves wrote:
> That's an idea. But the installer has always offered the option to choose the
> architecture and I don't see any problem with continuing to provide that
> support.
But what for? KISS.
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17.09.2015 16:23, Paul Reeves wrote:
> The installer calls instsvc and instsvc includes all the code we need to
> un/install services. And instsvc is only 250Kb. So I don't see a big win in
> terms of reducing the size of the installation package. And personally, I use
> instsvc.exe a lot on
17.09.2015 16:32, Dmitry Yemanov wrote:
> For v3, I'd say that the installer should be the only tool touching
> configuration file(s).
I'd say that installer don't need to touch config file at all.
Version 3 has SMP-friendly superserver, right? It covers 99,99% of usage.
The rest of
users
14.09.2015 21:22, Helen Borrie wrote:
> Could some isql boffin confirm, or explain?
isql does not start transaction itself. It just send SET TRANSACTION query
to server as
is. Server don't use any kind of "history of session", so it can use only these
flags that
are set in command itself.
29.09.2015 13:21, Paul Vinkenoog wrote:
> So a CASCADE option would be a welcome addition for such cases.
Another question: how many levels should this cascade go?
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21.09.2015 9:30, Helen Borrie wrote:
> but presumably the xsqlda can carry them?
Currently - not because XSQLVAR.sqllen is a signed short int.
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08.12.2015 1:39, Carlos H. Cantu wrote:
> I guess the proposed
> enhancement will be useful for 99% of the cases, when user don't care
> about loosing some accuracy in the middle of the calculation, but
> still cares about accuracy of stored data (what you store is exactly
> what you get when you
08.12.2015 13:39, Vlad Khorsun wrote:
>I don't know how to guarantee atomic execution of sequence of two
> instructions on Intel HW.
Don't be confused by pseudocode in function description.
> You have a proof of course...
Test program from your link.
MSVC assembler:
> ; Line
Hello, All.
Currently to do subj, code like this is used:
> while (true)
> {
> AtomicCounter::counter_type old = dbb_flags;
> if ((old & (DBB_sweep_in_progress |
> DBB_sweep_starting)) || (dbb_ast_flags &
08.12.2015 11:26, Dimitry Sibiryakov wrote:
> Is there a reason not to use _InterlockedOr() intrinsic with MSVC and
> __sync_or_and_fetch() with GCC for such cases?
Pardon, __synch_fetch_and_or(), of course,
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08.12.2015 12:29, Vlad Khorsun wrote:
> Note, with MSVC, when return value of _InterlockedOr() intrinsic is used
> by the caller, compiler will
> generate almost the same code as above (with a loop and compare_exchange).
Yes, but they do it on assembler level.
> But __sync_fetch_and_or()
08.12.2015 15:31, Vlad Khorsun wrote:
> This code is not the same as code that you blamed and it is not correct
> at all.
At first, I don't blame your code. It is robust and fast enough. It is just
a little
confusing at first glance and leave some more room for threads racing if you
08.12.2015 14:56, Vlad Khorsun wrote:
> Do you see the principal difference with Firebird asm code i show ?
Principal difference - no. Size difference - yes.
> Do you see the loop with compare_exchange ?
Yes.
> Do you see the "lock or" operation ?
Yes.
> Do you still have
08.12.2015 17:12, Jim Starkey wrote:
> But I don't get the logic that saving 10 ns. is worth introducing a
> bug.
Could you elaborate what bug you have on mind?
> I suppose there are cases where you want to set a bit and don't
> care whether it was already set are diminishingly small -- and
08.12.2015 17:45, Vlad Khorsun wrote:
> I see no races there. Especially considering another flags.
Yeah, my bad.
> This code must not set DBB_sweep_starting flag if it not going to start
> sweep thread.
> I.e. if sweep thread:
> - already starting
In this case flag
08.12.2015 16:29, Jim Starkey wrote:
> In virtual all cases involving updates of non-interlocked data structures,
> the logic is --
> and must be:
Unfortunately, this logic doesn't work quite well for bit flags.
Consider two threads, setting flags A and B respectively.
> for (;;)
>
08.12.2015 21:00, Carlos H. Cantu wrote:
> I'll let any core developer to answer you, since I don't know the reason for
> the two files.
Look at build scripts which one is used during build.
PS: In Firebird 3 there is only one file.
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02.12.2015 17:18, Alex Peshkoff wrote:
> Not sure what do you mean under
> Firebird::exception - Firebird::status_exception or Firebird::Exception
Firebird::Exception, of course which whole codebase is used to.
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02.12.2015 15:39, Alex Peshkoff wrote:
> For internal use in firebird another wrapper (working with
> status_exception) will be used, but it's not v.3 task.
Why you need another wrapper? Wouldn't be enough to typedef
Firebird::exception as
FbException?
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Hello, All.
YHelper calls this->addRef() in constructor. But if the rest of the
constructor throw
anything, destructor is called automatically and die on assertion
fb_assert(refCounter.value() == 0).
Is it a design flaw?
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03.12.2015 11:22, Alex Peshkoff wrote:
> Yes, and looks like assert() did it best to help find it.
Remove the call of addRef(), find all YHelper's descendants and fix every
single
creation of them is the right fix for that?
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06.12.2015 20:15, Mário Reis wrote:
> Is there some way of get a msg file of certain language?
Sure. That's how German and French translations are done now.
> As i do have a few hours i'll w'ill be happy to help for example translating
> de original
> msg file into portuguese but i need to
>
08.12.2015 23:26, Vlad Khorsun wrote:
>> 1) allowSweepThread() set DBB_sweep_starting
> Then code attempts to start sweep thread. Which could fail.
If start thread fail, clearSweepFlags() will be called, clearing both flags.
May be you mean failed sweeper attach? Yes, this case will
09.12.2015 12:17, Vlad Khorsun wrote:
> 09.12.2015 12:49, Dimitry Sibiryakov wrote:
>> 08.12.2015 23:26, Vlad Khorsun wrote:
>>>> 1) allowSweepThread() set DBB_sweep_starting
>>> Then code attempts to start sweep thread. Which could fail.
>>
>>
03.12.2015 12:11, Alex Peshkoff wrote:
>> Remove the call of addRef(), find all YHelper's descendants and fix
>> every single
>> >creation of them is the right fix for that?
>> >
> Yes, something like this.
In YTransaction::enterDtc(), copy->addRef() is already called. Must it be
now
02.12.2015 14:17, Alex Peshkoff wrote:
> Internally we do not use ThrowStatusWrapper (except UDR plugin).
I know. That's why the question: what is it for and how/where can be used?
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Hello, All.
What's the purpose of the subj? I don't see it to be called from anywhere
and IDL file
also has no comment about it.
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Give
Hello, All.
Subj throws FbException, but everywhere in code Firebird::exception is being
caught.
How it is supposed to work?
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Give your
02.12.2015 14:37, Alex Peshkoff wrote:
> Let me not describe trivial class here.
Ok, I got it: for end-user applications only, cannot be used in any part of
Firebird
itself.
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16.12.2015 18:42, Alex Peshkoff wrote:
> One more advice - check the result before committing. After this commit
> we once get:
>
> # ./isql -z aa
> ISQL Version: LI-V3.0.0.3-dev Firebird 3.0 Release Candidate 2
> Statement failed, SQLSTATE = 08006
> Unable to complete network request to host
Hello, All.
Trying to understand why crypt key is requested several times during one
connect to a
database, I added some logging into cryptomanager and got following log:
> SD-HP Sat Dec 12 19:02:17 2015
> 02016F20 crypt manager loaded AES128
> SD-HP Sat Dec 12 19:02:17 2015
>
14.12.2015 15:10, Alex Peshkoff wrote:
> in a case when cache to be decreased reopen is unavoidable.
Errr... Cache? What this routine does at all?
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14.12.2015 14:04, Alex Peshkoff wrote:
>> 1) Slow connect
> Connect second time - you will not see this effect for SS & SC, for CS
> it's known problem.
Is it in tracker? Is it going to be fixed?
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14.12.2015 15:25, Alex Peshkoff wrote:
> On 12/14/2015 05:15 PM, Dimitry Sibiryakov wrote:
>> 14.12.2015 15:10, Alex Peshkoff wrote:
>>> in a case when cache to be decreased reopen is unavoidable.
>> Errr... Cache? What this routine does at all?
>
> Routine? not
14.12.2015 15:48, Alex Peshkoff wrote:
> On 12/14/2015 05:42 PM, Dimitry Sibiryakov wrote:
>> 14.12.2015 15:39, Alex Peshkoff wrote:
>>>>> Routine? not routine, but parameter in DPB makes it possible to decrease
>>>>>>> cache size.
>>>>&g
14.12.2015 15:39, Alex Peshkoff wrote:
>>> Routine? not routine, but parameter in DPB makes it possible to decrease
>>> >>cache size.
>> > If you make the routine to work with already loaded database, these
>> > parameters will be
>> >already applied before it is called, no?
>> >
> No.
15.12.2015 12:54, Alex Peshkoff wrote:
> No. To change (or not) cache settings we need to know whether current
> user has DBO rights or not. And this becomes known only after the call
> to mapUser.
Do you mean cache settings written into database or memory cache settings?
I was sure that
17.12.2015 13:27, Paul Beach wrote:
>>> > >It would be nice to offer an ecryption plugin that works to all Firebird
>>> > >users, not
>>> > >just via our own internal replication fork.
>> >
>> >Certainly, but let's avoid breaking code when doing it.
> Agreed - especially at an RC stage of
18.12.2015 0:09, Vlad Khorsun wrote:
> I fixed a very old bug which you used to run very questionable
> configuration.
Ok, ok, but now get back gsec to work, please.
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17.12.2015 17:56, Dimitry Sibiryakov wrote:
> Ability to use "Providers = Remote,Loopback,Engine12" which you have just
> broken was
> useful
BTW, gsec stopped to work in embedded mode as we
15.12.2015 13:47, Alex Peshkoff wrote:
> So you want to say that in case of CS there is no need in checking for
> DBO and therefore calling mapUser too early? Seems to be so.
And in the case of SS, if error "not enough rights" is thrown, then the
connection
failed, database is unloaded,
15.12.2015 14:35, Alex Peshkoff wrote:
> When database is opened by SS and
> is ready for processing mapping request it can be used by another
> attachment - and it will be used with wrong cache settings, which may
> badly affect performance.
What do you think about this:
1) For first
15.12.2015 13:54, Dimitry Sibiryakov wrote:
> if error "not enough rights" is thrown, then the connection
> failed, database is unloaded, cache setting are reset.
All this is in the case if dynamic cache size grow is impossible, of course.
15.12.2015 13:47, Alex Peshkoff wrote:
> I will review the code when finish with crypt manager.
During your finishing, consider following case:
1) Server has two encrypted database
2) First DB is encrypted using CryptPlugin1 + KeyHolder1
3) Second DB is encrypted using CryptPlugin2 +
10.12.2015 17:54, Dmitry Yemanov wrote:
> And I have
> absolutely no wish adjusting the snapshot compile box accordingly.
IIRC, this box uses MSVC 2010 SP1, right?
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10.12.2015 17:58, preeves wrote:
> Is there anything in the Service Pack that is relevant to the
> compiler or the debugger?
Yes, several bug fixes:
https://support.microsoft.com/en-us/kb/983509#kb-link-91
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15.12.2015 14:57, Alex Peshkoff wrote:
> Single additional attachment once per server operation is not worth
> wasting time on it.
You are wrong here.
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15.12.2015 15:49, Alex Peshkoff wrote:
> If DbCryptPlugin::setKey is written badly - will not be called.
DbCryptPlugin2 won't have a chance to call it if KeyHolder1 returned 1.
Ok, I realized that KeyHolderPlugin is to be set in databases.conf only.
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04.01.2016 14:34, Geoff Worboys wrote:
> I thought that maybe it might be important to grab the current
> counter values with that first call to isc_que_events, but that
> doesn't make any sense, as it appears that the returned counter
> is always an increment of the passed in existing counter
29.12.2015 11:43, Alex Peshkoff wrote:
That I do not expect to get something better than this bell curve:
I was unable to create a good load on database with my weak notebook, but oltp-emul
with 5 windows gave me these numbers for lock manager using CRC32:
Hash slots: 8191, Hash lengths
29.12.2015 18:08, Dmitry Yemanov wrote:
> Really?
Yep. Look into Hash.h. It is much different (and much slower).
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Hello, All.
Isn't it a good time to drop support of 20 years old processors and raise
-march value
from i386 to i686?
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06.01.2016 1:03, Arno Brinkman wrote:
> Well. this :
>
> SELECT 1 / 3 FROM RDB$DATABASE
> SELECT 1.0 / 3 FROM RDB$DATABASE
>
> should return 0.333, agree ?
Actually, I agree. I believe that division should produce double precision
result.
06.01.2016 8:28, Mark
07.01.2016 15:56, Adriano dos Santos Fernandes wrote:
>> Remember that a CAST(? as CHAR(10) CHARACTER SET OCTETS) is described in
> I mean CAST(? as CHAR(10) CHARACTER SET UTF8)...
You (and currently engine too) mix up data size in bytes and count of
characters in a
string.
xsqlvar.sqllen
31.12.2015 12:33, Adriano dos Santos Fernandes wrote:
> As I said, if 10.2 is supposedly converted to INTEGER then to VARCHAR
> and results in '10.2', INTEGER is being ignored.
IMHO, this is a bug. Routine should get '10' in this case or an error to be
raised.
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