unable to connect to the database: Can't open lib 'MySQL ODBC 3.51 Driver'

[shravankumar147]

Issue

unable to connect with the database:
Error:
('01000', "[01000] [unixODBC][Driver Manager]Can't open lib 'MySQL ODBC 3.51 Driver' : file not found (0) (SQLDriverConnect)")

Environment

• Python: 2.7
• pyodbc: latest from pip install
• OS: ubuntu 16.04 x64
• DB:MySQL
• driver:MySQL ODBC 3.51 Driver

[gordthompson]

Have you actually installed the ODBC driver for MySQL? If so, did you register the driver so that it appears in odbcinst.ini, for example:

[MySQL ODBC 3.51 Driver]
Driver=/home/gord/Downloads/mysql-connector-odbc-3.51.30-linux-glibc2.3-x86-64bit/lib/libmyodbc3.so
UsageCount=1

You should be able to use the odbcinst -j command to check the location of odbcinst.ini. On Ubuntu it is typically /etc/odbcinst.ini.

[shravankumar147]

Tried and worked Thanks

[kevalshah90]

It appears that I have MySQL ODBC 8.0 Driver installed. Content of odbcinst.ini -

[ODBC Drivers]
MySQL ODBC 8.0 Unicode Driver = Installed
MySQL ODBC 8.0 ANSI Driver = Installed

[ODBC Connection Pooling]
PerfMon = 0
Retry Wait =

[MySQL ODBC 8.0 Unicode Driver]
Driver = /usr/local/mysql-connector-odbc-8.0.15-macos10.14-x86-64bit/lib/libmyodbc8w.so

[MySQL ODBC 8.0 ANSI Driver]
Driver = /usr/local/mysql-connector-odbc-8.0.15-macos10.14-x86-64bit/lib/libmyodbc8a.so

However, I am getting the following error when running -

connstr = pyodbc.connect(Driver='{MySQL ODBC 8.0 Driver}',
server='localhost',
Database='dbname1',
UID='root',
PWD='xxxxxx')

Error: ('01000', u"[01000] [unixODBC][Driver Manager]Can't open lib 'MySQL ODBC 8.0 Driver' : file not found (0) (SQLDriverConnect)")

[v-makouz]

@kevalshah90 When specifying the driver in the connection string it has to match exactly what appears in odbcinst.ini, so in this case it should be either Driver='{MySQL ODBC 8.0 Unicode Driver}' or Driver={MySQL ODBC 8.0 ANSI Driver}

[kevalshah90]

@v-makouz Thanks. I have attempted both of those, still getting the same error.

[kevalshah90]

Error: ('01000', u"[01000] [unixODBC][Driver Manager]Can't open lib 'MySQL ODBC 8.0 Unicode Driver' : file not found (0) (SQLDriverConnect)")

Error: ('01000', u"[01000] [unixODBC][Driver Manager]Can't open lib 'MySQL ODBC 8.0 ANSI Driver' : file not found (0) (SQLDriverConnect)")

@v-makouz

[v-makouz]

@kevalshah90 If the name is correct, but the driver can't be loaded you can try to check is there is any problem with the driver file itself:
otool -L /usr/local/mysql-connector-odbc-8.0.15-macos10.14-x86-64bit/lib/libmyodbc8w.so

[v-makouz]

@kevalshah90 Also try
isql -v -k "DRIVER={MySQL ODBC 8.0 Unicode Driver};SERVER=<server>;UID=<user>;PWD=<password>"
It might give a more informative message about what it's not finding

[kevalshah90]

Unfortunately, same message upon running the above line of code.

Can't open lib 'MySQL ODBC 8.0 Unicode Driver' : file not found (0) (SQLDriverConnect)").

I wonder if it is looking in the right place for the file? Is there a way to check?

[v-makouz]

@kevalshah90 If isql shows this and not the filename it means that the Driver Manager still can't match MySQL ODBC 8.0 Unicode Driver with an entry in odbcinst.ini. So the next thing to check is to run odbcinst -j, it will display (among other things) something like this:
DRIVERS............: /usr/local/etc/odbcinst.ini
Make sure that the odbcinst.ini that the Driver Manager expects is the one that has the MySQL entries

[kevalshah90]

So, here are the paths for the driver -

[MySQL ODBC 8.0 Unicode Driver]
Driver = /usr/local/mysql-connector-odbc-8.0.15-macos10.14-x86-64bit/lib/libmyodbc8w.so

[MySQL ODBC 8.0 ANSI Driver]
Driver = /usr/local/mysql-connector-odbc-8.0.15-macos10.14-x86-64bit/lib/libmyodbc8a.so

whereas the output of odbcinst -j suggests /usr/local**/etc/**odbcinst.ini.

I wonder if that's the discrepancy?

[v-makouz]

@kevalshah90 I mean when you are looking at the odbcinst.ini, is that the same odbcinst.ini that's listed by odbcinst -j?

[kevalshah90]

Different paths. The one I am looking at is /Library/ODBC/odbcinst.ini and the one listed by odbcinst -j is /usr/local/etc/odbcinst.ini.

I am guessing I need to add the MySQL entries to /usr/local/etc/odbcinst.ini. Umm..I am not seeing a way to access or edit those files?

[v-makouz]

@kevalshah90 You'll need to copy the entries (or the whole file) to /usr/local/etc/odbcinst.ini because that's the one that the Driver Manager is reading

To copy the whole file you can run cp /Library/ODBC/odbcinst.ini /usr/local/etc/odbcinst.ini which will overwrite everything in the destination.

[kevalshah90]

Thanks for your help. For the record, MySQL ODBC 8.0 ANSI Driver works.

[gisael]

@kevalshah90 You'll need to copy the entries (or the whole file) to /usr/local/etc/odbcinst.ini because that's the one that the Driver Manager is reading

To copy the whole file you can run cp /Library/ODBC/odbcinst.ini /usr/local/etc/odbcinst.ini which will overwrite everything in the destination.

You are amazing. Your very detailed explanation made my date. I appreciate your elaborated help here. Thanks!