MyDAC MyConnection ignores Password
In various circumstances, the TMyConnection "Password" field doesn't seem to work properly. 1. In the Delphi Object Inspector, right after I enter a password into the Password field, if I then set Connected to True, a connect dialog pops up with the Password
invalid bytes count error - DotConnect for Oracle
Hi, we moved from Oracle 12c to 19c and upgraded Devart.Data.Oracle to 10.0.0.0 and to Devaty.Data.Oracle EntirtE6 and we getting that error invalid bytes count right at the start up, during getting user profiles from database. What can be a reason for
Passing parameters to TUniStoredProc without SELECT privilege
Hello. I have MySQL database with some of the stored procedures for accessing data in it. The only global privilege enabled is EXECUTE, others are disabled. I'm trying to call a stored procedure in MySQL database with the help of TUniStoredProc using
Update SQLite Direct ?
Hello, Any ideas why you don't update the SQLite direct to the latest version ? Thank you
How to get entire BLOB content with dbExpress
I have a Firebird 3.x database with UTF8 characters, connected with Devart dbExpress from a Delphi Intraweb program and cannot get it to display more than one character of a BLOB memo field. Presumably I need to set something different when connecting
MyDAC and SDAC question
I am trying to retrieve data from MS SQL Server (about 40000 records) and copy them to TDictionary as fast as possible. My problem is that it is slow and some setting changes give strange results. What I do is: 1. I open TMSQuery object MSQArt, it takes
MyDAC Bug 12.4.0
I just switched to the new release and re-compiled my projects. Now I get this error, when I start my program: assertion failure "d:\jenkins\workspace\DAC\MyDAC\Delphi\Dac\Common\Source\CRVioTcpSSL.pas"
Unitable isindex and lookup do not work
Hello, i am using a UniDac UniTable to access a SQL server database. To view the structure of the table i need to know which fields are index fields and which ones are lookup connections. The tunitable has two properties which should give this information:
UniDAC 10.3.2 - Returning - Firebird 4 / Firebird 5
With 10.1.0 “Added support for multiple rows being returned by DML with the RETURNING clause” was introduced. I have now noticed that in a query with returning with Firebird 4 the returning is in the params (fields empty) and with Firebird 5 in the fields
UniDAC 10.4 Source Installation
Hi, I am trying to use Make.bat using Make.bat Delphi WIN32 but get the error: Embarcadero Delphi for Win32 compiler version 36.0 Copyright (c) 1983,2025 Embarcadero Technologies, Inc. odbcprovider290.dpk(28) Fatal: E2225 Never-build package 'rtl' must
Prevent ODAC from appearing in Delphi main menu
Hello, After I install ODAC components into Delphi, "ODAC" is inserted into Delphi's main menu. Is there a way to prevent (or remove) this? Thanks John Dorlon
Delphi 12.3 64bit-IDE support
Hi when can we expect the design-time controls for the 64bit IDE of Delphi 12.3 for the Delphi Data components ? Kind regards, Erik
'relation "__EFMigrationsHistory" already exists' when running multiple migration sets
Hello, I am working on upgrading my company's application, based on dotConnect for PostgreSQL, from EF6 to EF Core. The application has multiple modules with migrations for module-specific entities and all migrations are applied to the same database.
[PgDAC] Error when executing SQL Query in table with blob files
Hi there, hope you'll ok. I recently started using PgDAC for queries that works with blob files, especially using the "execute" command of PostgreSQL (version 16). When i execute the query, i'm getting the following error: "ERROR: Assertion failure (D:\Jenkins\workspace\DAC\PgDAC\Delphi\Dac\PostgreSql\Source\PgSQLProtocol.pas,
Sqlite support to Microsoft Visual Studio Community 2022 (ARM 64-bit)
I'm using Microsoft Visual Studio Community 2022 om a macbook pro M4. Everything work just fine except dotConnect for SQlite. Using latest version 6.4.190 Getting error when try to open SQLiteConnection in debug mode. Application is running fine standalone.
TScSMTPClient for dummies
Hi, I am playing a little around with ScSMTPClient and was able to send mails. I am currently failing to get/receive an errror when using an non existing adress no matter wether used as a from or to address. Am I right that this is probably related to
.NET 9 - Devart.Data.Oracle.EfCore - Discriminator issue with include
Hello Devart, When using discriminators in EF Core and then including navigational properties which aren't available on all discriminated types, only on specific derived types: var result = await ctx.Vehicles .Include(_ => ((Car)_).PossibleEngineTypes)
.NET9 Ef Core 9.0.1+ Object reference not set to an instance of an object.
Hi, I'm getting Object reference not set to an instance of an object. from Microsoft.EntityFrameworkCore.Relational at pretty much each query. For example: await context.TV_USERS.AsNoTracking().Where(x => x.ID == Id).FirstOrDefaultAsync(ct); I'm using
SecureBridge Installer won't let me uncheck any components
Hello, I want to uncheck the following in the SecureBridge installer, but the boxes don't respond when I uncheck them. SecureBridge files for Win64 (Modern) SecureBridge files for macOS SecureBridge files for Android It's not a big deal, just annoying.
DateTimeOffset.Date does not correctly truncate time in dotConnect for PostgreSQL
Hello, I am working on upgrading my company's application, based on dotConnect for PostgreSQL, from EF6 to EF Core. We have been using multiple methods from the DbFunctions class, many of which were removed in EF Core. From my understanding, DateTimeOffset.Date
SDAC older versions download
Hello, Where can I download older versions of SDAC? I have UniDAC installed on our developer machine and it says I need very specific version of SDAC, not any two versions are compatible. So, I need to try SDAC on Delphi 11 Alexandria, specifically version
C++ Builder error: E2015 Ambiguity between 'Crjson::TJSONObject' and 'System::Json::TJSONObject'
I just moved one of my C++ Builder projects to RAD Studio 12.2 and UniDAC 10.3.2. I am getting the above error plus E2015 Ambiguity between 'Crjson::TJSONArray' and 'System::Json::TJSONArray'. I am only using TJSONObject and TJSONArray in this project,
SQLite low-level
i want to understand - can i use unidac/litedac in low-level mode? without connections, datasets and so on. as i see - a can use LiteStaticUni module. and, may be, some thing else. is there are some description or manuals for it?
TUniQuery fails with Parameterized UpdateSQL while updating data in AWS to Bablefish for Aurora PostgresSQL
Hi We have been using your wonderful library of UniDAC components (for SQL Server) for several years now and currently use version 10.1.0 professional version for Delphi 12. Currently we were evaluating to move our database to AWS through Bablefish implementation
Define ClientID and ClientSecret in Dynamics365 ODBC DSN
Hello, how is it possible to store a ClientID and a ClientSecret in a Windows ODBC connection for the Devart driver in the ODBC Manager? I only see the option to generate a token, and I am then prompted to log in. However, I would like to create an app
Oracle Idle Time and Odac
I am running Odac 12.1.1 with Oracle as my database. In Oracle, the idle time is set to 1 min. SQLPlus disconnects perfectly after 1 min idle time. My frontend application however exactly disconnects after 3 min Why is that ? Anyone else seen such behaviour
Why no feature to convert T-SQL to LINQ for .NET 9 Core?
I keep requesting and keep hoping my yearly subscription will get T-SQL to LINQ for .NET 9 core. But sadly every year passes an no feature added? Stored Procedures are a thing of the past and most development projects no longer use them. It's 2025, can't
VirtualQuery IsNULL
Hi, Is use a virutalQuery to show informations : 1. SELECT A.INT_COUT,A.MAT_ID,A.INT_DEB,A.INT_TECH,CAST(SUBSTR(A.INT_DESC,0,255) AS VARCHAR(255)) AS INT_DESC_T,CAST(SUBSTR(A.INT_ACT,0,255) AS VARCHAR(255)) AS INT_ACT_T,A.INT_FIN,A.INT_TYPE,(B.T_CIVILITE
SqLite Localized Order
Hi With Android Studio Java I can select a sqlite table like Select * From MyTable Order By Name Collate Localized The data returns ordered by with my language specific characters But there is no such an option with Delphi/Unidac I receive an exception
Invalid SQL when ordering on a calculated boolean field: "ORA-00920: invalid relational operator"
We are experiencing malformed SQL when ordering on a calculated boolean field. This is an example of the invalid SQL: SELECT "c".ID, "c".NAME "Brand", (CASE WHEN ( SELECT COUNT(*) FROM MODELS "m0" WHERE "m0".CAR_ID = "c".ID) > 1 THEN 1 ELSE 0 END) "HasMoreThenOneModel",
Ora error when filtering/ordering on a calculated boolean field: "ORA-00933: SQL command not properly ended"/"ORA-00920: invalid relational operator"
We are experiencing malformed SQL when ordering/filtering on a calculated boolean field. This is an example of the invalid SQL SELECT "c".ID, "c".NAME "Brand", (CASE WHEN ( SELECT COUNT(*) FROM MODELS "m" WHERE "m".CAR_ID = "c".ID) > 1 THEN 1 ELSE 0 END)
.NET 9 - devart.Data.Oracle.EFCore method not found
Updating everything for .NET 9.0 and suddenly I get the following error: System.MissingMethodException: 'Method not found: 'Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlConstantExpression Microsoft.EntityFrameworkCore.Query.SqlExpressionFactory.Constant(System.Object,
Batch move and creating destination table in Access
Hello! I'm experimenting so that we can move away from Paradox onto something a little bit more useful. For the time being, however, the "temporary fix" is Access. Let's not go into the why, how, etc. For now this is the best course of action. The access
ODAC local filter raises EVariantTypeCastError
We have tried to use a newer ODAC version in production. The following issue is a showstopper for us. It seems that this issue exists since version 12.3.0. Steps: - compile and execute the following command line application Expected: the output is PASS
DBExpress driver for PostgreSQL
Hello, I've read that you can't use multi transaction with Devart drivers for PostgreSQL. But I also read that PostgreSQL seemed to support it. Can you tell me what's going on? Thank you in advance. Lbn69
ODAC: "Invalid Field Type" when calling a stored function with VARCHAR2 params
We have developed a VCL application in C++Builder, using RAD Studio 12 Version 29.0.51961.7529 (Version 12.1 basically) with a target platform Windows64. Our database is Oracle 19 running on an ODA with latest patches. The problem always occurs when I
EntityDAC developer on Oracle
Hello, I'm trying to use Entity Developer to generate model for my Oracle database. It seems that after model generation some table are not still present in the database. I'm using Entity Developer version 6.12.1354 trial. Thank you, Luca
Access denied for user 'x'@'ip' (using password: YES)
Hello, This is maybe a strange question, but I am evaluating the mysql connector and I started by trying to generate a model Entity Developer (with entity framework - database first approach). The problem is that I am not even able to connect to my server,
Universal Error in Mysql
hi all ! Im getting the following error and I dont know whats causing it. Exception thrown: 'System.NotSupportedException' in Devart.Data.dll UniDbType not supported by current data provider This is how I setup the connection public new Devart.Data.Universal.UniConnection
Module Class connect() method ConnectMode = "Unsafe" parameter
Hi All, I am using this connector for a few days now and I am quite happy with it. Recently I had to deal with a connection to a 3rd party Visual Foxpro database in which I couldn't connect because the dbf file I wanted to access was locked by another
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