Unidac in a Windows Service?
I have spent a lot of time trying to get a couple of applications using Unidac to work as a service. I can get these applications to work ok in GUI mode, but they will not run as a service. I can install the service ok, but when I try to Start the service,
Devart.Data.Oracle.EF6: Can it have .Net Framework support in Nuget?
Hello, I am currently updating our dotConnect for Oracle (DevArt.Data.Oracle) package to 10.3.10 in our .NET Framework 4.6.2 solution. I would also like to update Devart.Data.Oracle.EF6 to 10.3.10 but the dependencies in nuget requires .NET Standard 2.1:
OracleSQLCompatibility with EF Core 8
Hi, I am working on an application that uses the Devart.Data.Oracle.EFCore nuget package to read data from an Oracle data base. I want to update the application to EFCore 8 but I have a problem with Contains in LINQ queries when I use a older Oracle database.
Unidac do not connect to NEON database site.
In Delphi I can connect using FIREDAC components and its works fine. But I need use UNIDAC (TUNICONNECTION). And when I try to connect with NEON DATABASE, using the exact same connections informations, this error shows up (SSL_do_handshake = -1) I had
SQLite data access issue
I have successfully installed the Devart SQLite ODBC driver and I can connect to the SQLite database using MS Access. I can update data and delete rows but I am having 2 issues I hope you can help me with. · I am unable to add new rows to any SQLite table
Unidac Postgres - Postgres 14 and older UniDAC postgres
I had to rebuild my old dev environment and installed newer Postgres version, previously had 9.x and went to 14. I have resolved the error, but want to share my solution here. this link let When developing with older unidac 8.4 I ran into issue where
SQLite upper() function Unicode
Hello, SQLite doesn't support unicode SQL upper() function. My question: is there a way in UniDAC to enable it? Example: current: select upper('aou-äöü') -> 'AOU-äöü' expected: select upper('aou-äöü') -> 'AOU-ÄÖÜ' Some suggestion? Br, /Werner
TUniConnection feature request
Hello Please add TUniConnection.CommandTimeout specific option for SQL Server because ConnectionTimeout and CommandTimeout are not the same things. See MSClassesUni.pas, line 1246 It's need for Connection.ExecProc and Connection.ExecProcEx
PostgreSQL: "Unexpected server response : ¹."
The question is how can I avoid this exception? UniDAC 10.1.0 with PosgreSQL server. I try to return a blob field of PosgreSQL type bytea using this code with TUniQuery.Create(nil) do try Connection := ucDL; SQL.Add('SELECT ' + FieldN + ' FROM ' + sNumeTabelComenzi
Strange Refresh Failed error message
Hello, I have a TOraQuery component, with a relatively simple select. It joins tables for the master table called ATB. select atb.rowid, atb.*, sby.c_nev1 c_belep_szintnev, bko.c_nev c_szervezetnev, saj.c_nev1 c_uzemkodnev, bkp.c_nev c_onelszamolonev,
Access violation Unidac in 64bit
I can't connect by using the TUniconnection compornent. My connection makes connection editor. 32 bit is ok, but 64bit is fail. My Environment is Win 11 & Delphi 12.1 & Unidac 10.2.1
Connection Pool is used like this ?
---------------------------------------------------------------------------------------- program api; {$MODE DELPHI}{$H+} uses cthreads, db.dataset; begin db.dataset.PoolConexao; end. ----------------------------------------------------------------------------------------
Regression in UniDAC 10.2+ with PostgreSQL
Hello, When running our database test suite I noticed multiple EOutOfRangeArgument exceptions being thrown by UniDAC (10.2 and 10.2.1) with PostgreSQL (v13.14). When executing the same SQL requests (simple UPDATE statement) directly against the database
ut8 collation
Starting with SQL Server 2019, there is a new collation named Latin1_General_100_BIN2_UTF8 which seems to allow to use unicode-characters in traditional varchar-fields. Can you share any experience with columns using that collation? We access our database
dotConnect for MySQL can't display Chinese Character
Hi, trying to evaluate if the dotConnect is useful for my project, I downloaded the free version. managed to get the thing to work after jumping through many many many hoops. (Like, it doesn't work in VS2022, had to hunt down a copy of VS2019 to get it
PostgreSQL column default values
Hi, I'm using PostgreSQL 15 with Delphi 11 and latest UniDAC components. Create a table: CREATE TABLE sample (col_a VARCHAR DEFAULT 'A'); Then use a TUniQuery that "SELECT * FROM sample", add a TDataSource linked to the query and a grid and dbnavigator
Issue with Dynamics ODBC
Good morning, We've a recurrent issue with this ODBC...every 2 weeks - more or less - we're not able to use it due to this error: We bought a full license months ago. We've tried several times what you suggested on previous communications: remove the
Update to 12.2 with C++Builder 12.0 not working
Hello support, I made an updaet tp 12.2 and got these errors. [C++ Error] Crtypes.hpp(230, 7): unknown type name '_DELPHI_CONST' [C++ Error] Crtypes.hpp(230, 29): cannot define or redeclare 'Int8' here because namespace 'Crtypes' does not enclose namespace
UniDAC Providers components disappear Delphi 11.0
Yesterday I downloaded the UniDAC trial version, installed under Delphi 11.0. Created a program that consisted of a connection, provider, data source, and a dbgrid. Got connected to my SQL Server and the grid populated with the results of the query. Fantastic,
dotConnect for MySQL is missing a detail on running a Update in ASP .NET MVC
I am attempting to follow the code snippets on the link shown below and have been able to retrieve and create new database records. dotConnect for MySQL Entity Framework Tutorial (devart.com) The issue is that trying this code snippet below doesn't actually
UniDAC 10.1.0 - StoredProcedure incorrect results
Database: Firebird. Since the update, it may happen that StoredProcedures return incorrect results. For some colleagues with Delphi 11 or Delphi 12 it happens that a TUniStoredProc does not return the correct result. But not with all of them, so unfortunately
Can I use dotConnect Universal with Entity Framework?
Hello, I'm very new to your product and I consider using it in our project. We need to have the ability to switch between two different databases - Oracle and Postgre. My question is would that be possible with dotConnect Universal while also working
License issue when upgrading from EF Core 7 to 8
Hi, I am working on an application that uses the Devart.Data.Oracle.EFCore nuget package to read data from an Oracle 10g data base. Originally, my application was based on .NET 6.0 and Entity Framework 7. Recently .NET 8.0 was approved for usage within
"The client code page 65001 does not have a corresponding SQL Server Collation. InMemory Rowset creation failed."
A customer has set a Windows setting that was marked as beta, but is probably now required by several applications: Control Panel > Clock and Region > Region > Administrative tab > Change system locale button > Beta:Use Unicode UTF-8 for worldwide language
OperationalError: Trial period has expired
Hi guys! I'm trying use devart.ase lib for python (3.10) and i get this message: "OperationalError: Trial period has expired." Is this lib free for use? if not, how much is? and how can i get a valid license? Thank you in advance
Unexpected SqlParameterExpression implementation when using Oracle spatial functions in EF Core 8
We are planning to upgrade EF Core 6 to EF Core 8 along with upgrade from .NET 6 to .NET 8. We frequently use Oracle spatial functions: "SDO_RELATE" and "SDO_WITHIN_DISTANCE", which unfortunately do not have built-in support in dotConnect for Oracle according
Unidac 10.1 (in)compatibility issue with Delphi 12.1 in 64bits mode
Hello, We came across an issue while trying to use Unidac from packages compiled with Delphi 12.1 (Version 29.0.51961.7529) on 64bits windows platform. At launch, the package tries to resolve a symbol called __init_record_FILENAME, which, was apparently
How to use UniDAC to connect to Borland's Paradox database
Hello everyone, I'm maintaining a legacy project, developed in Delphi 7, and using the Paradox database (plzl.DB). I now need to migrate the database using the UniDAC component, but I found that there is no Paradox option in the ProviderName property.
Keep getting an exception of "ORA-00971: missing SET keyword" where SET keyword is there.
Hello friends, I keep getting an exception of "ORA-00971: missing SET keyword" for the following source code. I have no idea why. As you can see, it has SET keyword. Any ideas? Thank you so much! try { OracleConnection connection = new OracleConnection(_connectionString);
How can detect which driver is used by active TMSConnection?
Hello, How can detect which driver is just used by active TMSConnection from code.. For example if is used Native client 11 or Native client 10 or Ole db provider, or SQL server OLE DB driver 19 or 18....... etc... need something like this showmessage('Iam
constraint failed virutalquery
Hi, With the code below : //---- Ouverture de la tables des paramètres (L_PARAM_AS is a TUniTable component on L_PARAM_AS table in attach file) L_PARAM_AS.Open; //---- RequeteParametreDispo is a TVirtualQuery with L_PARAM_AS in source dataset RequeteParametreDispo.Sql.Text
SQL Statement Parsing Error
Greetings; In version 10.1.0 of UniDac I have a problem in type conversions with PostgreSQL, this problem was not present in the previous version. Example: "SELECT id, name::text FROM customer" In the example SQL statement I get an error in the "name::text"
Solution for .NET entity framework database connection using web API
We have a windows .NET application which is built using Entity framework and WCF. Looking for Database connectivity tool to stablish secure connection with SQL Server Database using web API
Firebird - RETURNING not working
Hello. I'm having problem in Firebird with RETURNING value with latest Unidac 10.1.0 on Delphi 11 update 3. Problem occurs when "same" query is used for SELECT and INSERT/UPDATE. I've attach db.txt with sample table T1 with three fields (ID,f1,f2). Here
UniDAC loading and saving Delphi TMemo
How can I load and then save a Delphi TMemo contents into an sqlite table?
Entity Developer and Composite Keys
Hello, Is there are way within Entity Developer, prior to code generation, to flag attributes, and remove the warnings e.g. Northwind db (image) so my generated code mappings won't have an issue. Thanks.
performance of simple "select count(*) from ....."
I run a simple "select count(*) from mytable", but it is quite slow. sqlite3 database. If I do it with sqlitestudio 3.3.3 I get the answer instantaneous. 264000 records. With unidac it takes 6 secs, when I set unidirectional = false or it is much worse
GetDate() error for Dynamics ODBC Driver
I'm getting an error message when I use GetDate() in a SQL query I'm writing using the ODBC driver. Basically I only want to pull records created today. Has anyone run into this issue and found a work around? Thanks
ItemInventory missing custom fields in QuickBooks Desktop
I'm trying to select from ItemInventory with a python script and I'm finding that the table structure is different, when I use the DevArt driver rather than the QODBC driver. Particularly, the custom fields are missing. I'm not seeing any settings in
SocketException with dotConnect for Magento while Opening Connection
Hello, I am experiencing a Socket connection error with ADO.NET provider for dotConnect for Magento while opening a connection. Interestingly there is no problem connecting to the database with MySQL Nuget package by Oracle. The Connection Errors are:
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