Ged Haywood writes:
Hi there,
On Fri, 1 Mar 2002, Axel Andersson wrote:
I run a mod_perl/mysql site, which works fine most of the time. Some
pages, however, come out completely blank. Reload.. and hey presto,
[snip]
Well, it's a longshot, but thanks anyway.
Another long shot, do you always specify full paths to files in your code?
If you don't get anywhere with that then I'd suggest looking at the debugging
section of the Guide: http://prel.apache.org/guide and/or peppering your code
at strategic places with 'print STDERR $something_useful\n' statements.
73,
Ged.
I have been getting the same problems with the same setup ( Mod_Perl /
MySQL). But I am having a little fun with this setup. I populated a small
table in the 'test' DB in MySQL withe the contents of
'/usr/local/share/dict/propernames'. I then have the script to randomly
chose an id from the DB table and then to select a row of info. I will post
the scipt contents and some debugging data to give some more info on the
internal processes.
The Script is :
1 package DBNE;
2
3 use strict;
4 use vars qw($DBH);
5 use Apache;
6 #use Apache::File;
7 use DBI();
8
9 sub handler {
10 $DBH = DBI-connect(DBI:mysql:test,webuser,mult1scan)
|| die $DBH-errstr;
11 my $r = shift;
12 my $h = $DBH-trace(5,/tmp/DBI.log);
13
14 $r-send_http_header;
15 my $sth = $DBH-prepare(SELECT MAX(id) FROM webtest);
16 $sth-execute;
17 my ($id) = $sth-fetchrow;
18
19 my $sth = $DBH-prepare(SELECT * FROM webtest WHERE id =
ROUND( (RAND() * $id) + 1));
20 $sth-execute;
21
22 my ($id,$name,$last,$town) = $sth-fetchrow;
23 $r-print($id\t\t $name\t\t $last\t\t $town \n);
24 $sth-finish;
25
26 }
27
28 1;
The debuging info is:
- DESTROY= undef at /home/mcalvo/ModPerl/DBNE.pm line 11
DBI::db=HASH(0x81faf3c) trace level set to 5 in DBI 1.20-nothread
Note: perl is running without the recommended perl -w option
- prepare for DBD::mysql::db (DBI::db=HASH(0x81e90e4)~0x81faf3c 'SELECT
MAX(id) FROM webtest')
dbih_setup_handle(DBI::st=HASH(0x8156390)=DBI::st=HASH(0x81e90d8),
DBD::mysql::st, 81faef4, Null!)
dbih_make_com(DBI::db=HASH(0x81faf3c), DBD::mysql::st, 204)
dbih_setup_attrib(DBI::st=HASH(0x81e90d8), Err, DBI::db=HASH(0x81faf3c))
SCALAR(0x818bc78) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81e90d8), State,
DBI::db=HASH(0x81faf3c)) SCALAR(0x81aef9c) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81e90d8), Errstr,
DBI::db=HASH(0x81faf3c)) SCALAR(0x818bc54) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81e90d8), Handlers,
DBI::db=HASH(0x81faf3c)) ARRAY(0x81e90b4) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81e90d8), Debug,
DBI::db=HASH(0x81faf3c)) 5 (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81e90d8), FetchHashKeyName,
DBI::db=HASH(0x81faf3c)) 'NAME' (already defined)
Setting mysql_use_result to 0
- prepare= DBI::st=HASH(0x8156390) at /home/mcalvo/ModPerl/DBNE.pm line
15
- execute for DBD::mysql::st (DBI::st=HASH(0x8156390)~0x81e90d8)
- dbd_st_execute for 081fac90
- dbd_st_execute 1 rows
- execute= 1 at /home/mcalvo/ModPerl/DBNE.pm line 16
- fetchrow for DBD::mysql::st (DBI::st=HASH(0x8156390)~0x81e90d8)
- dbd_st_fetch for 081fac90, chopblanks 0
dbih_setup_fbav for 1 fields = 0x8135854
Storing row 0 (1323) in 081fae64
- dbd_st_fetch, 1 cols
- fetchrow= ( '1323' ) [1 items] row1 at /home/mcalvo/ModPerl/DBNE.pm
line 17
- prepare for DBD::mysql::db (DBI::db=HASH(0x81e90e4)~0x81faf3c 'SELECT
* FROM webtest WHERE id = ROUND( (RAND() * 1323) + 1)')
dbih_setup_handle(DBI::st=HASH(0x81faf90)=DBI::st=HASH(0x81faf24),
DBD::mysql::st, 81faf78, Null!)
dbih_make_com(DBI::db=HASH(0x81faf3c), DBD::mysql::st, 204)
dbih_setup_attrib(DBI::st=HASH(0x81faf24), Err, DBI::db=HASH(0x81faf3c))
SCALAR(0x818bc78) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81faf24), State,
DBI::db=HASH(0x81faf3c)) SCALAR(0x81aef9c) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81faf24), Errstr,
DBI::db=HASH(0x81faf3c)) SCALAR(0x818bc54) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81faf24), Handlers,
DBI::db=HASH(0x81faf3c)) ARRAY(0x81e90b4) (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81faf24), Debug,
DBI::db=HASH(0x81faf3c)) 5 (already defined)
dbih_setup_attrib(DBI::st=HASH(0x81faf24), FetchHashKeyName,
DBI::db=HASH(0x81faf3c)) 'NAME' (already defined)
Setting mysql_use_result to 0
- prepare= DBI::st=HASH(0x81faf90) at /home/mcalvo/ModPerl/DBNE.pm line
19
- execute for DBD::mysql::st (DBI::st=HASH(0x81faf90)~0x81faf24)
- dbd_st_execute for 081e9084
- dbd_st_execute 0 rows
- execute= '0E0' at /home/mcalvo/ModPerl/DBNE.pm line 20
- fetchrow for DBD::mysql::st
