Windows: OCI plugin working on development PC and not when deployed : unable to logon

Exaecho

Hello,

I just built the OCI 19c plugin from source, everything works fine in the Qt IDE.

I create a portable version with windeployqt, also putting all path dependencies by hand in the application folder, I remove everything from user AND system path, and everything still works on the development pc.

When I try to run the exported application on another PC (same version of windows, 64 bits), it doesn't work anymore!

I get the error: "unable to logon".

Here is the code used

this->db.setUserName("MYUSER");
this->db.setPassword("MYPASS");
QString myco = "(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = MYHOST)(PORT = 1521))(CONNECT_DATA = (SERVICE_NAME = MYSERVICENAME)))";
this->db.setDatabaseName(myco);
this->db.setHostName("");
this->db.open()

db.lastError() returns :

unable to logon

I already did all this deploying thing few months ago for OCI oracle 11g, and it was working fine...
I've been stuck for a week now, I dont know what to do at all...
Any advice?

Thank you in advance,
Exaecho

jsulm

@Exaecho Try this:

Set QT_DEBUG_PLUGINS in a terminal
After setting QT_DEBUG_PLUGINS start your app from the same terminal
Check the output (you can also post it here)

See https://doc.qt.io/qt-6/debug.html

Exaecho

First of all, thank you for answering @jsulm !

I have not been able to get any feedback on the PC that is causing the problem, there is nothing written in the terminal... I don't know how to get it written.

However on the PC with Qt Creator 5.9.1, when I add QT_DEBUG_PLUGINS in env vars, I get the following (filtered) return in Qt Creator "Application Output" tab:

[debug](unknown:0):     0.642 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqloci.dll"
[warning](unknown:0):     0.643 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqloci.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QOCI8",
            "QOCI"
        ]
    },
    "className": "QOCIDriverPlugin",
    "debug": false,
    "version": 329985
}
[...]
[debug](unknown:0):     0.643 - Got keys from plugin meta data ("QOCI8", "QOCI")
[debug](unknown:0):     0.643 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlocid.dll"
[warning](unknown:0):     0.645 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlocid.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QOCI8",
            "QOCI"
        ]
    },
    "className": "QOCIDriverPlugin",
    "debug": true,
    "version": 329985
}
[...]
[debug](unknown:0):     0.645 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlocid.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[...]
[debug](unknown:0):     0.653 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqloci.dll"

And the whole code is here :

Starting D:\Data\myuser\LogAnalysisToolV9\BuildLATGUI\release\release\LogAnalysisToolGUI.exe...
QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qminimal.dll"
Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qminimal.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 329985
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qminimald.dll"
Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qminimald.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "className": "QMinimalIntegrationPlugin",
    "debug": true,
    "version": 329985
}


"The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qminimald.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qoffscreen.dll"
Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qoffscreen.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 329985
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qoffscreend.dll"
Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qoffscreend.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "className": "QOffscreenIntegrationPlugin",
    "debug": true,
    "version": 329985
}


"The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qoffscreend.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qwindows.dll"
Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qwindows.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "windows"
        ]
    },
    "className": "QWindowsIntegrationPlugin",
    "debug": false,
    "version": 329985
}


Got keys from plugin meta data ("windows")
QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qwindowsd.dll"
Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qwindowsd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "windows"
        ]
    },
    "className": "QWindowsIntegrationPlugin",
    "debug": true,
    "version": 329985
}


"The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qwindowsd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/platforms" ...
loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platforms/qwindows.dll"
QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/platformthemes" ...
QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/platformthemes" ...
QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/styles" ...
QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/styles" ...
[debug](unknown:0):     0.057 - QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/iconengines" ...
[debug](unknown:0):     0.057 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/iconengines/qsvgicon.dll"
[warning](unknown:0):     0.057 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/iconengines/qsvgicon.dll, metadata=
{
    "IID": "org.qt-project.Qt.QIconEngineFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz",
            "svg.gz"
        ]
    },
    "className": "QSvgIconPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.058 - Got keys from plugin meta data ("svg", "svgz", "svg.gz")
[debug](unknown:0):     0.058 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/iconengines/qsvgicond.dll"
[warning](unknown:0):     0.059 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/iconengines/qsvgicond.dll, metadata=
{
    "IID": "org.qt-project.Qt.QIconEngineFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz",
            "svg.gz"
        ]
    },
    "className": "QSvgIconPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.059 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/iconengines/qsvgicond.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.059 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/iconengines" ...
[debug](unknown:0):     0.127 - QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats" ...
[debug](unknown:0):     0.127 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qgif.dll"
[warning](unknown:0):     0.128 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qgif.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "gif"
        ],
        "MimeTypes": [
            "image/gif"
        ]
    },
    "className": "QGifPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.128 - Got keys from plugin meta data ("gif")
[debug](unknown:0):     0.128 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qgifd.dll"
[warning](unknown:0):     0.129 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qgifd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "gif"
        ],
        "MimeTypes": [
            "image/gif"
        ]
    },
    "className": "QGifPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.130 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qgifd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.130 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicns.dll"
[warning](unknown:0):     0.130 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicns.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "icns"
        ],
        "MimeTypes": [
            "image/x-icns"
        ]
    },
    "className": "QICNSPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.130 - Got keys from plugin meta data ("icns")
[debug](unknown:0):     0.130 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicnsd.dll"
[warning](unknown:0):     0.132 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicnsd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "icns"
        ],
        "MimeTypes": [
            "image/x-icns"
        ]
    },
    "className": "QICNSPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.132 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicnsd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.132 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qico.dll"
[warning](unknown:0):     0.132 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qico.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "ico",
            "cur"
        ],
        "MimeTypes": [
            "image/vnd.microsoft.icon"
        ]
    },
    "className": "QICOPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.132 - Got keys from plugin meta data ("ico", "cur")
[debug](unknown:0):     0.133 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicod.dll"
[warning](unknown:0):     0.134 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicod.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "ico",
            "cur"
        ],
        "MimeTypes": [
            "image/vnd.microsoft.icon"
        ]
    },
    "className": "QICOPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.134 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicod.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.134 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qjpeg.dll"
[warning](unknown:0):     0.135 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qjpeg.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "jpg",
            "jpeg"
        ],
        "MimeTypes": [
            "image/jpeg",
            "image/jpeg"
        ]
    },
    "className": "QJpegPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.135 - Got keys from plugin meta data ("jpg", "jpeg")
[debug](unknown:0):     0.135 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qjpegd.dll"
[warning](unknown:0):     0.137 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qjpegd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "jpg",
            "jpeg"
        ],
        "MimeTypes": [
            "image/jpeg",
            "image/jpeg"
        ]
    },
    "className": "QJpegPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.137 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qjpegd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.137 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qsvg.dll"
[warning](unknown:0):     0.138 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qsvg.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz"
        ],
        "MimeTypes": [
            "image/svg+xml",
            "image/svg+xml-compressed"
        ]
    },
    "className": "QSvgPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.138 - Got keys from plugin meta data ("svg", "svgz")
[debug](unknown:0):     0.138 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qsvgd.dll"
[warning](unknown:0):     0.139 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qsvgd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "svg",
            "svgz"
        ],
        "MimeTypes": [
            "image/svg+xml",
            "image/svg+xml-compressed"
        ]
    },
    "className": "QSvgPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.140 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qsvgd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.140 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtga.dll"
[warning](unknown:0):     0.140 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtga.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tga"
        ],
        "MimeTypes": [
            "image/x-tga"
        ]
    },
    "className": "QTgaPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.140 - Got keys from plugin meta data ("tga")
[debug](unknown:0):     0.140 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtgad.dll"
[warning](unknown:0):     0.142 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtgad.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tga"
        ],
        "MimeTypes": [
            "image/x-tga"
        ]
    },
    "className": "QTgaPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.142 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtgad.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.142 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtiff.dll"
[warning](unknown:0):     0.142 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtiff.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tiff",
            "tif"
        ],
        "MimeTypes": [
            "image/tiff",
            "image/tiff"
        ]
    },
    "className": "QTiffPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.143 - Got keys from plugin meta data ("tiff", "tif")
[debug](unknown:0):     0.143 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtiffd.dll"
[warning](unknown:0):     0.145 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtiffd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "tiff",
            "tif"
        ],
        "MimeTypes": [
            "image/tiff",
            "image/tiff"
        ]
    },
    "className": "QTiffPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.145 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtiffd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.145 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwbmp.dll"
[warning](unknown:0):     0.145 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwbmp.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "wbmp"
        ],
        "MimeTypes": [
            "image/vnd.wap.wbmp"
        ]
    },
    "className": "QWbmpPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.145 - Got keys from plugin meta data ("wbmp")
[debug](unknown:0):     0.145 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwbmpd.dll"
[warning](unknown:0):     0.147 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwbmpd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "wbmp"
        ],
        "MimeTypes": [
            "image/vnd.wap.wbmp"
        ]
    },
    "className": "QWbmpPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.147 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwbmpd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.147 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwebp.dll"
[warning](unknown:0):     0.147 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwebp.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "webp"
        ],
        "MimeTypes": [
            "image/webp"
        ]
    },
    "className": "QWebpPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.148 - Got keys from plugin meta data ("webp")
[debug](unknown:0):     0.148 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwebpd.dll"
[warning](unknown:0):     0.150 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwebpd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QImageIOHandlerFactoryInterface",
    "MetaData": {
        "Keys": [
            "webp"
        ],
        "MimeTypes": [
            "image/webp"
        ]
    },
    "className": "QWebpPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.150 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwebpd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.150 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/imageformats" ...
[debug](unknown:0):     0.151 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qgif.dll"
[debug](unknown:0):     0.152 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qicns.dll"
[debug](unknown:0):     0.152 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qico.dll"
[debug](unknown:0):     0.153 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qjpeg.dll"
[debug](unknown:0):     0.154 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qsvg.dll"
[debug](unknown:0):     0.154 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtga.dll"
[debug](unknown:0):     0.155 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qtiff.dll"
[debug](unknown:0):     0.155 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwbmp.dll"
[debug](unknown:0):     0.156 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/imageformats/qwebp.dll"
[debug](unknown:0):     0.157 - QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/accessible" ...
[debug](unknown:0):     0.157 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/accessible" ...
[warning](unknown:0):     0.172 - QFileSystemWatcher::addPaths: list is empty
[debug](unknown:0):     0.633 - QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/accessiblebridge" ...
[debug](unknown:0):     0.633 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/accessiblebridge" ...
[debug](unknown:0):     0.636 - QFactoryLoader::QFactoryLoader() checking directory path "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers" ...
[debug](unknown:0):     0.637 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlite.dll"
[warning](unknown:0):     0.638 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlite.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QSQLITE"
        ]
    },
    "className": "QSQLiteDriverPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.638 - Got keys from plugin meta data ("QSQLITE")
[debug](unknown:0):     0.638 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlited.dll"
[warning](unknown:0):     0.642 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlited.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QSQLITE"
        ]
    },
    "className": "QSQLiteDriverPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.642 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlited.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.642 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqloci.dll"
[warning](unknown:0):     0.643 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqloci.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QOCI8",
            "QOCI"
        ]
    },
    "className": "QOCIDriverPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.643 - Got keys from plugin meta data ("QOCI8", "QOCI")
[debug](unknown:0):     0.643 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlocid.dll"
[warning](unknown:0):     0.645 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlocid.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QOCI8",
            "QOCI"
        ]
    },
    "className": "QOCIDriverPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.645 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlocid.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.645 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlodbc.dll"
[warning](unknown:0):     0.646 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlodbc.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QODBC3",
            "QODBC"
        ]
    },
    "className": "QODBCDriverPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.646 - Got keys from plugin meta data ("QODBC3", "QODBC")
[debug](unknown:0):     0.646 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlodbcd.dll"
[warning](unknown:0):     0.648 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlodbcd.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QODBC3",
            "QODBC"
        ]
    },
    "className": "QODBCDriverPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.648 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlodbcd.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.648 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlpsql.dll"
[warning](unknown:0):     0.648 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlpsql.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QPSQL7",
            "QPSQL"
        ]
    },
    "className": "QPSQLDriverPlugin",
    "debug": false,
    "version": 329985
}


[debug](unknown:0):     0.648 - Got keys from plugin meta data ("QPSQL7", "QPSQL")
[debug](unknown:0):     0.649 - QFactoryLoader::QFactoryLoader() looking at "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlpsqld.dll"
[warning](unknown:0):     0.650 - Found metadata in lib C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlpsqld.dll, metadata=
{
    "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
    "MetaData": {
        "Keys": [
            "QPSQL7",
            "QPSQL"
        ]
    },
    "className": "QPSQLDriverPlugin",
    "debug": true,
    "version": 329985
}


[debug](unknown:0):     0.650 - "The plugin 'C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqlpsqld.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)" 
         not a plugin
[debug](unknown:0):     0.651 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/LogAnalysisToolV9/BuildLATGUI/release/release/sqldrivers" ...
[debug](unknown:0):     0.653 - loaded library "C:/MyPrograms/Qt/Qt5.9.1/5.9.1/mingw53_32/plugins/sqldrivers/qsqloci.dll"

SGaist

Hi,

@Exaecho said in Windows: OCI plugin working on development PC and not when deployed : unable to logon:

First of all, thank you for answering @jsulm !

I have not been able to get any feedback on the PC that is causing the problem, there is nothing written in the terminal... I don't know how to get it written.

Open the terminal
Define the environment variable
Start the application from the terminal

Exaecho

@SGaist Thank you for your answer !

maybe I should have said it more explicitly, but I already tried that and I have no feedback in the terminal:

C:\Users\Exaecho\MyApp\prog>set QT_DEBUG_PLUGINS=1

C:\Users\Exaecho\MyApp\prog>LogAnalysisToolGUI.exe

C:\Users\Exaecho\MyApp\prog>

Am I doing something wrong?
Should I compile the program in debug mode? Because at the moment it is in release

SGaist

No, I forgot about that particularity from Windows.

See this post on this thread for the explanation and a solution.

Exaecho

Thank you for your answer !

After using that tool I was able to get the good output, and there is only one unusual line :

[...]
[9312] [warning](unknown:0):     3.235 - QOCIDriver: unable to create environment
[...]

Here is the all output :

[9312] QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/platforms" ...
[9312] QFactoryLoader::QFactoryLoader() looking at "C:/Users/Exaecho/MyPrograms/prog/plugins/platforms/qwindows.dll"
[9312] Found metadata in lib C:/Users/Exaecho/MyPrograms/prog/plugins/platforms/qwindows.dll, metadata=
[9312] {
[9312]     "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
[9312]     "MetaData": {
[9312]         "Keys": [
[9312]             "windows"
[9312]         ]
[9312]     },
[9312]     "className": "QWindowsIntegrationPlugin",
[9312]     "debug": false,
[9312]     "version": 329985
[9312] }
[9312] 
[9312] 
[9312] Got keys from plugin meta data ("windows")
[9312] QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/platforms" ...
[9312] loaded library "C:/Users/Exaecho/MyPrograms/prog/plugins/platforms/qwindows.dll"
[9312] QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/platformthemes" ...
[9312] QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/platformthemes" ...
[9312] QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/styles" ...
[9312] QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/styles" ...
[9312] [debug](unknown:0):     0.100 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/iconengines" ...
[9312] [debug](unknown:0):     0.100 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/iconengines" ...
[9312] [debug](unknown:0):     0.226 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/imageformats" ...
[9312] [debug](unknown:0):     0.227 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/imageformats" ...
[9312] [debug](unknown:0):     0.244 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/accessible" ...
[9312] [debug](unknown:0):     0.244 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/accessible" ...
[9312] [warning](unknown:0):     0.300 - QFileSystemWatcher::addPaths: list is empty
[9312] [debug](unknown:0):     2.708 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/accessiblebridge" ...
[9312] [debug](unknown:0):     2.709 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/accessiblebridge" ...
[9312] [debug](unknown:0):     2.716 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/plugins/sqldrivers" ...
[9312] [debug](unknown:0):     2.718 - QFactoryLoader::QFactoryLoader() looking at "C:/Users/Exaecho/MyPrograms/prog/plugins/sqldrivers/qsqloci.dll"
[9312] [warning](unknown:0):     2.722 - Found metadata in lib C:/Users/Exaecho/MyPrograms/prog/plugins/sqldrivers/qsqloci.dll, metadata=
[9312] {
[9312]     "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
[9312]     "MetaData": {
[9312]         "Keys": [
[9312]             "QOCI8",
[9312]             "QOCI"
[9312]         ]
[9312]     },
[9312]     "className": "QOCIDriverPlugin",
[9312]     "debug": false,
[9312]     "version": 329985
[9312] }
[9312] 
[9312] 
[9312] [debug](unknown:0):     2.723 - Got keys from plugin meta data ("QOCI8", "QOCI")
[9312] [debug](unknown:0):     2.726 - QFactoryLoader::QFactoryLoader() checking directory path "C:/Users/Exaecho/MyPrograms/prog/sqldrivers" ...
[9312] [debug](unknown:0):     2.752 - loaded library "C:/Users/Exaecho/MyPrograms/prog/plugins/sqldrivers/qsqloci.dll"
[9312] [warning](unknown:0):     3.235 - QOCIDriver: unable to create environment
[9312] [warning](unknown:0):    70.747 - Unable to free Error handle: -2
[9312] [warning](unknown:0):    70.803 - QLibraryPrivate::unload succeeded on "C:/Users/Exaecho/MyPrograms/prog/plugins/sqldrivers/qsqloci.dll" 
[9312] [warning](unknown:0):    70.804 - QLibraryPrivate::unload succeeded on "C:/Users/Exaecho/MyPrograms/prog/plugins/platforms/qwindows.dll"

It is possible that it is due to the wrong files used during the build like here :
https://forum.qt.io/topic/7958/qocidriver-unable-to-create-environment-solved

But then I dont understand why would it work on the development computer without any problems

SGaist

Did you check that you have all the dependencies deployed ? And of the correct architecture ?

Exaecho

@SGaist Thank you for your answer !

@SGaist said in Windows: OCI plugin working on development PC and not when deployed : unable to logon:

Did you check that you have all the dependencies deployed ?

On the dev PC I removed everything from Path, and ran the program, it's working well :

[14428] QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/platforms" ...
[14428] QFactoryLoader::QFactoryLoader() looking at "D:/Data/myuser/Test 9.3.1/platforms/qwindows.dll"
[14428] Found metadata in lib D:/Data/myuser/Test 9.3.1/platforms/qwindows.dll, metadata=
[14428] {
[14428]     "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
[14428]     "MetaData": {
[14428]         "Keys": [
[14428]             "windows"
[14428]         ]
[14428]     },
[14428]     "className": "QWindowsIntegrationPlugin",
[14428]     "debug": false,
[14428]     "version": 329985
[14428] }
[14428] 
[14428] 
[14428] Got keys from plugin meta data ("windows")
[14428] loaded library "D:/Data/myuser/Test 9.3.1/platforms/qwindows.dll"
[14428] QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/platformthemes" ...
[14428] QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/styles" ...
[14428] [debug](unknown:0):     0.012 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/iconengines" ...
[14428] [debug](unknown:0):     0.079 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/imageformats" ...
[14428] [debug](unknown:0):     0.080 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/accessible" ...
[14428] [warning](unknown:0):     0.097 - QFileSystemWatcher::addPaths: list is empty
[14428] [debug](unknown:0):     0.558 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/accessiblebridge" ...
[14428] [debug](unknown:0):     0.561 - QFactoryLoader::QFactoryLoader() checking directory path "D:/Data/myuser/Test 9.3.1/sqldrivers" ...
[14428] [debug](unknown:0):     0.561 - QFactoryLoader::QFactoryLoader() looking at "D:/Data/myuser/Test 9.3.1/sqldrivers/qsqloci.dll"
[14428] [warning](unknown:0):     0.561 - Found metadata in lib D:/Data/myuser/Test 9.3.1/sqldrivers/qsqloci.dll, metadata=
[14428] {
[14428]     "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
[14428]     "MetaData": {
[14428]         "Keys": [
[14428]             "QOCI8",
[14428]             "QOCI"
[14428]         ]
[14428]     },
[14428]     "className": "QOCIDriverPlugin",
[14428]     "debug": false,
[14428]     "version": 329985
[14428] }
[14428] 
[14428] 
[14428] [debug](unknown:0):     0.561 - Got keys from plugin meta data ("QOCI8", "QOCI")
[14428] [debug](unknown:0):     0.563 - loaded library "D:/Data/myuser/Test 9.3.1/sqldrivers/qsqloci.dll"

So I think that all dependencies are deployed !

@SGaist said in Windows: OCI plugin working on development PC and not when deployed : unable to logon:

And of the correct architecture ?

All program is built in 32 bits, OCI plugin also, and both computers are 64 bits... Should I check something else ?

SGaist

Check where each dependency is found on your dev PC just in case it loads something from an unusual place.

Exaecho

@SGaist Everything is working !

I checked with Dependencies all dependencies, nothing unusual.
After I checked all runtime dependencies with the windows built-in ressource monitor and....one DLL was loaded from my oracle installation folder...

Why ?
In order to create my portable application I copied/pasted the DLLs from my Oracle database installation folder. Even though I put the loaded file in the application folder, it was going to look for the one in the oracle installation folder, maybe because a hard link in one of files must have pointed to it

Solution:
Use an instant-client !
I just copied/pasted all files from the instant-client and everything was working !

Thank you all for your help !