RE: Re: Accessing MS Access through the DBI ODBC
Just my opinion, but I don't think this is good advice. For one, it creates extra administration on the system, by forcing the user/programmer /sysadmin/webadmin to create an ODBC DSN setting for every new setup. For two, DBI and ODBC both support dynamic DSNs, so why not use them? If you have separate development, test and production environments, it's sometimes easier to use DSNs. That way, when you migrate from dev to test, for example, you automagically get the test environment connection information. That's one reason why I like DSNs over putting them in the code. Of course, TMTOWTDI... Jeff
RE: Insert help...
-- NIPP, SCOTT V \\(SBCSI\\) [EMAIL PROTECTED] OK... I have been able to solve this problem, and it was no big deal. However, the problem I am currently facing is really hosing me up... Basically, a NULL field is getting converted to a 0 in the database. This causes a comparison of the same file and the database to yield a lot of differences. Please help. I think this has got to be related to the INSERT. The table column is setup as 'smallint' allowing NULLS with the default value set to NULL. This column however is getting a '0' if the input file is empty for that field. Here is the pertinent code... Simple fix: Don't store NULL's in your database. If you pick an appropriate non-NULL value then the entire problem goes away and you can tell what the outcome of joins really is. -- Steven Lembark 85-09 90th Street Workhorse ComputingWoodhaven, NY 11421 [EMAIL PROTECTED] 1 888 359 3508
Re: Perl error in fetching data from Clob datatype.
-- Rishi Bansal, Japan IT [EMAIL PROTECTED]
Hi,
I am trying to fetch data from CLOB datatype in Database.
I am getting an Error as : error:ORA-03127: no new operations allowed
until the active operation ends (DBD ERROR: OCISessionEnd).
I guess I am not handling the data fetched properly.
The code snippet is pasted here.
$dbh-{LongReadLen} = 1024 * 1024 * 1024;
Q: Do you really need a 1GiB buffer?
That alone may be causing you problems.
--
Steven Lembark 85-09 90th Street
Workhorse ComputingWoodhaven, NY 11421
[EMAIL PROTECTED] 1 888 359 3508
Re: Unable to connect to Oracle on another Unix host in a perl programming using DBI
-- Kairam, Raj [EMAIL PROTECTED]
To those who could help me with a problem connecting to an Oracle
database on HP-UX from within a perl script that uses DBI
I have a perl program on a unix (HP-UX) host(A) running Oracle 8.1.6
In the program I am trying to connect to another unix (HP-UX) host(B)
running Oracle 8.1.7 holding a table c1dwg.
The perl script that runs on host A contains these lines.
$ENV{'ORACLE_HOME'} = '/u01/app/oracle/product/8.1.6';
$ENV{'ORACLE_SID'} = 'CAD';
use DBI;
$dbh = DBI-connect('dbi:Oracle:Mycad4prod', 'user', ''password') ||
Just for the fun of it try:
my $dbh = DBI-connect
(
dbi:Oracle:host=$ip_address;sid=$sid,
$user,
$pass
);
The point here is to bypass any other issues and see
if you can reach a tnslsnr on the IP address with an
explicit ORACLE_SID value.
--
Steven Lembark 85-09 90th Street
Workhorse ComputingWoodhaven, NY 11421
[EMAIL PROTECTED] 1 888 359 3508
RE: A good Perl Book
-- Reidy, Ron [EMAIL PROTECTED] 1. Programming Perl 2. Perl Cookbook 3. Object Oriented Perl 4. Extending and Embedding Perl 5. Writing CGI Applications with Perl Watch O'Reilly Press' list for Perl Best Pratices by Damian Conway. -- Steven Lembark 85-09 90th Street Workhorse ComputingWoodhaven, NY 11421 [EMAIL PROTECTED] 1 888 359 3508
Re: Should prepare_cached() manage its total size or memory usage?
-- Mark Stosberg [EMAIL PROTECTED] Hello, I have a database application that selects about 50,000 rows one by one, does some process in Perl, and then executes a SELECT statement for each one, with slight variations in the SQL and parameters. I was using prepare_cached() on this repeatedly called SELECT statement. Depends on how you're using the caching. If it looks something like: my $sth = prepare_cached( 'select foo from bar where ( bletch = ?)' ); Then this should generate a single query and re-cycle it for later use. If you are using ANYthing hardcoded specific to the query then caching will just leave a huge number of row-specific queries lying around; which is probably not what you want. Q: Are the placeholders in the existing query(s) or do they use hard-coded values? If you have a small number of placeholder queries then this is odd behavior; if not then all you've done is generate the non-recycled-cache-from-hell and the behavior is normal. -- Steven Lembark 85-09 90th Street Workhorse ComputingWoodhaven, NY 11421 [EMAIL PROTECTED] 1 888 359 3508
Re: [DBI] Re: What is wrong with select?
Basicly $StateProvince in a string value in you sql statement, so you either single quote yourself, or let DBI do it. Or use a placeholder and save yourself the pain of figuring it out: select ... where name_short = ? will do the deed without your having to even think about quoting. -- Steven Lembark 85-09 90th Street Workhorse ComputingWoodhaven, NY 11421 [EMAIL PROTECTED] 1 888 359 3508
