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Connect to MS Access w/o ODBC, DSN, from Win32

by chiller (Scribe)
on Dec 12, 2001 at 04:54 UTC ( #131130=perlquestion: print w/replies, xml ) Need Help??
chiller has asked for the wisdom of the Perl Monks concerning the following question:

I have been reading thru the articles w/r/t ADO and ODBC and getting thoroughly confused.

Is this even possible? I need to connect to a Microsoft Access database on an NT machine without an ODBC Data Source control panel. I cannot set up a DSN. This is not the way I'd like it, but for paranoid security reasons, that is just the way it is.

I have looked at Win32::OLE and DBI::ADO and these all seem to require a DSN. I cannot use any ODBC anything, for obvious reasons.

Short of redesigning the Access DB to export information to CSV, what are possible solutions?


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Re: Connect to MS Access w/o ODBC, DSN, from Win32
by Kanji (Parson) on Dec 12, 2001 at 05:04 UTC

    DBD::ODBC (alt.) has supported DSN-less connections for awhile.

    From the POD...

    Connect without DSN
    The ability to connect without a full DSN is introduced in version 0.21. Example (using MS Access):
    my $DSN = 'driver=Microsoft Access Driver(*.mdb);dbq=\\\\cheese\\g$\\p +erltest.mdb'; my $dbh = DBI->connect("dbi:ODBC:$DSN", '','') or die "$DBI::errstr\n" +;


      Thanks, all. I tried the suggestions, but I get this error:
      DBI->connect(driver=Microsoft Access Driver *.mdb);dbq=\\SERVER\My_Dat +abase.mdb) failed: [Microsoft][ODBC Driver Manager] Invalid string or + buffer length (SQL-S1090)(DBD: db_login/SQLConnect err=-1) at connec line 7 [Microsoft][ODBC Driver Manager] Invalid string or buffer + length (SQL-S1090)(DBD: db_login/SQLConnect err=-1)
      (What I am attempting to do is: get table from Access DB on Novell server, determine if Access DB in local machine in the same version, then copy a new version to the local machine if there has been an update... sounds easy enough.)
Re: Connect to MS Access w/o ODBC, DSN, from Win32
by mortis (Pilgrim) on Dec 12, 2001 at 06:08 UTC
    On Win32 you can connect directly to the access mdb file, but it still is through DBD::ODBC. The following code is a summarizaion of code I've used to manipulate pre-existing ms access databases:
    use strict; use warnings; use DBI; my $file = 'c:/path/to/access/database.mdb'; my $dsn = 'dbi:ODBC:driver=Microsoft Access Driver (*.mdb);dbq=' . $fi +le; my $dbh = DBI->connect($dsn,undef,undef);
    I'm not 100% sure this will solve your immediate problems, but it has worked for me when there was no system wide DSN for the access database. I do beleive this solution is documented somewhere in the DBI/DBD pod documentation.

    Also, for the creation of a new MDB file (which you can't otherwise do without resorting to Win32 calls or ADO), I created a simple empty database with Access, and then serialized it using MIME::Base64 and stuffed the serialized version into a module so it was easy to just create a new blank db:

    use strict; use warnings; use BlankMDB; BlankMDB->writeToFile('c:/path/to/file.mdb');
Re: Connect to MS Access w/o ODBC, DSN, from Win32
by strat (Canon) on Dec 12, 2001 at 17:10 UTC

    You could create and delete DSNs on the fly; have a look at DSN's at Re: DSN's. But I prefer the the two other possibilities given here until now...

    Best regards,
    perl -e "print a|r,p|d=>b|p=>chr 3**2 .7=>t and t"

    Edit ar0n -- Changed text link to node link

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