I have developed a Python executable programm (with PyInstaller).
This executable use Firebird.
My computer is 64bits, so as my Python and my libraires then.
My executable works perfectly with Firebird 64bits.
The issue is that I want my executable to work on other computers that have only Firebird 32bits installed.
For now, when I try on an other computers the log tells me that (Sorry I have only the picture because my client only send me this and not the 'text' error) :
Is there a way to make it work with Firebird x32 ?
Thanks
You application need client libraries of Firebird.
[Application] <--> [Firebird client libraries] <==> (local or remote connection) <==> [Firebird client libraries] <-> [Firebird server]
If your application is Win64, then it needs Win64 client libraries of Firebird to make connection to ANY Firebird server.
So you need to distribute and install client libraries of Firebird matching your application architecture together with your app. Or you may require users to download and install client part of Firebird with the required architecture, before installing your app.
See also:
connecting to firebird server from client
https://firebirdsql.org/manual/qsg10-client-only-install.html
https://firebirdsql.org/file/documentation/reference_manuals/driver_manuals/odbc/html/fbodbc205-download-fbclient.html
https://firebirdsql.org/file/documentation/reference_manuals/user_manuals/html/qsg3-installing.html
If your app is 32bit than you need 32bit fb client dll/so to load, even on 64bit platform. You can connect on any compatible fbserver(regardless 64 or 32bit). So fb client lib(dll) issues are those you need to resolve. If you use fb as embedded library you need only one dll, and it must be compatible with your app binary interface and on 32bit system you need 32bit fbclient.dll to load. I hope this helps.
Related
I am connecting to an Oracle DB using LDAP and the Python cx_Oracle library. I have proper sqlnet.ora, ldap.ora and tnsnames.ora files. On my Windows machine everything works fine using the 12.1 Oracle client and the following Python code:
import cx_Oracle
connection = cx_Oracle.connect(user/password#db, mode=cx_Oracle.SYSDBA)
I have installed the Oracle instant client 12.1 on my Linux machine (Debian) following the zip file installation method advised on the Oracle website (at the bottom of https://www.oracle.com/be/database/technologies/instant-client/linux-x86-64-downloads.html).
ldconfig correctly lists the oracle client libraries and their paths.
I copy the exact same sqlnet.ora, ldap.ora and tnsnames.ora files from my Windows machine to my Linux machine
in /opt/oracle/instantclient_12_1/network/admin, as advised by the cx_Oracle documentation.
Now running the above Python code on my Linux machine I have the following error:
cx_Oracle.DatabaseError: ORA-12154: TNS:could not resolve the connect identifier specified
I tried as well setting the environment variable TNS_ADMIN=/opt/oracle/instantclient_12_1/network/admin and ORACLE_HOME=/opt/oracle/instantclient_12_1/ with no success neither
Could any of you help me debugging this and understand why the client config on my Linux machine does not work?
Installed the latest 19 client and everything works as expected.
I'm trying to use QOCI driver to connect to Oracle Database, but the driver is not available. For this simple code:
from PyQt5 import QtSql
QtSql.QSqlDatabase.isDriverAvailable('QOCI')
I get False.
I tried checking the PATH environmental settings, and I see that there is TNS_ADMIN variable set to folder with driver file oci.dll:
C:\Atena\instantclient_11_2
but it's still unavailable.
I tried downloading the driver from Oracle site, setting it up according to Oracle instructions (changing the PATH variable to the new driver folder, copying TNSnames.ora file etc.), but still the driver is unavailable.
I want to have the driver available for PyQt5, load it, and the use it to connect to Oracle database.
The OCI.DLL is included for example in instantclient-basic-windowsXXXXX.zip
Assume you have unzipped file to
C:\ORACLE\IC\12201\instantclient_12_2
to make it available for other applications, set in user environment
ORACLE_HOME=C:\ORACLE\IC\12201\instantclient_12_2
PATH=%PATH%;%ORACLE_HOME%
with this setting any application using OCI.DLL should find it.
Of course you have to install the right bitsize - i.e. if you application is 32bit, you need to install a 32bit Instant Client - if it is a 64bit App, you need 64bit instant client.
So - as far as I can see you need to build the QOCI manually. To do that, you need definetly the SDK package for instant client.
Sources on the web state that you need to include headers and libs from SDK - unfortunatly it looks like the QOCI still depends on Oracle Client 11.X - not instant client but regular client.
following libraries need to be used (last one is for client 12.x)
oci.lib ociw32.lib oraocci12.lib
on regular client
%ORACLE_HOME%\oci\lib\msvc
on instant client
%ORACLE_HOME%\sdk\lib\msvc
following headers need to be included
oci.h
on regular client
%ORACLE_HOME%\oci\include
on instant client
%ORACLE_HOME%\sdk\include
Unfortunatly there is no much support for MinGW so I cannot do that.
the "configure" command to prepare everything needs to include
-sql-oci -plugin-sql-oci
I have been trying to connect Python 3.7.1 to TOAD 11, with a client version 10.2.
When I try running the code below
import cx_Oracle
connection = cx_Oracle.connect('myusername/mypassword#orcl')
cursor = connection.cursor()
querystring = "select * from TABLE_NAME"
cursor.execute(querystring)
I get the following error:
DatabaseError: DPI-1047: Cannot locate a 64-bit Oracle Client library: "C:\ORACLE\PRODUCT\10.2.0\CLIENT_1\bin\oci.dll is not the correct architecture". See https://oracle.github.io/odpi/doc/installation.html#windows for help
I have been trying to download a 64 bit client, but I don't understand why I need one since TOAD and it's current client are 32-bit. The issue is that with my company, it does not say the bits in the description whenever something is requested to be installed (due to the security in the network, I cannot download anything unless it is approved by the IT department, and it can only be downloaded through their server). I attempted to download the instant client 11g, but it seems it was installed but the 10.2 version it's still the only one I can find in my machine. I cannot see where it is located anywhere, so I cannot even set an environment variable for it, but I can see it in the "uninstall wizard", but it doesn't show it's location. I don't even know if 11g is 64 bit or 32 bit.
Has anybody fixed this problem before?
Is my code off and maybe that's why its not working?
The error message is saying you need a 64-bit Oracle Client because Python is 64-bit.
For cx_Oracle you need Oracle client libraries version 11.2 or later. You can get the libraries as part of Oracle Instant Client from http://www.oracle.com/technetwork/topics/winx64soft-089540.html On Windows you will also need the Redistributable noted on that download page.
Also see the cx_Oracle installation instructions at https://cx-oracle.readthedocs.io/en/latest/installation.html#installing-cx-oracle-on-windows
You will have to work with your IT people to make this happen.
I'm trying to install MYSQLdb on a windows client. The goal is, from the Windows client, run a python script that connects to a MySQL server on a LINUX client. Looking at the setup code (and based on the errors I am getting when I try to run setup.py for mysqldb, it appears that I have to have my own version of MySQL on the windows box. Is there a way (perhaps another module) that will let me accomplish this? I need to have people on multiple boxes run a script that will interact with a MySQL database on a central server.
you could use a pure python implementation of the mysql client like
pymysql
(can be used as a dropin-replacement for MySQLdb by calling pymysql.install_as_MySQLdb())
MySql-Connector
You don't need the entire MySQL database server, only the MySQL client libraries.
It's been a long time since I wrote python db code for windows...but I think something like this should still work.
If you're running the client only on windows machines, install the pywin32 package. This should have an odbc module in it.
Using the windows control / management tools, create an odbc entry for either the user or the system. In that entry, you'll give the connection parameter set a unique name, then select the driver (in this case MySQL), and populate the connection parameters (e.g. host name, etc.) See PyWin32 Documentation for some notes on the odbc module in pywin32.
Also, see this post: Common ways to connect to odbc from python on windows.
I have a Twisted application that runs in an x86 64bit machine with Win 2008 server.
It needs to be connected to a SQL Server database that runs in another machine (in a cloud actually but I have IP, port, db name, credentials).
Do I need to install anything more that Twisted to my machine?
And which API should be used?
twisted.enterprise.adbapi will help you use any DB-API 2.0 module without blocking. It gives you a non-blocking, Deferred-based API by running database operations in a thread pool. python-mssql appears to be a DB-API 2.0 compliant module for MSSQL (I've never used it myself though).
If you want to have portable mssql server library, you can try the module from www.pytds.com.
It works with 2.5+ and 3.1, have a good stored procedure support. It's api is more "functional", and has some good features you won't find anywhere else.