A Database Error Occurred - codeigniter - codeigniter

I got this error :
Unable to connect to your database server using the provided settings.
Filename: C:/xampp/htdocs/soheil/system/database/DB_driver.php
Line Number: 436
but when I add below code inside database.php it prints ok :
echo '<pre>';
print_r($db['default']);
echo '</pre>';
echo 'Connecting to database: ' .$db['default']['database'];
$dbh=mysql_connect
(
$db['default']['hostname'],
$db['default']['username'],
$db['default']['password'])
or die('Cannot connect to the database because: ' . mysql_error());
mysql_select_db ($db['default']['database']);
echo '<br /> Connected OK:' ;
die( 'file: ' .__FILE__ . ' Line: ' .__LINE__);
my config :
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => '',
'password' => '',
'database' => 'soheil',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);

Are you put your username on database? It maybe root user
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => 'root',
'password' => '',
'database' => 'soheil',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
Hope this help.

Related

How do I connect to a database on a different server, say db4free.net from a pdo codeigniter project hosted on heroku

I am trying to host a codeigniter project on heroku, using an external mysql database at db4free.net.
I have tried all I can to no avail but my last effort looks like this
$db['mysql'] = array(
'dsn' => 'mysql:hostname="db4free.net"; dbname=ravenstock',
'hostname' => '',
'username' => 'ravenstockadmin',
'password' => '**************',
'database' => '',
'dbdriver' => 'pdo',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
Please Try This...
'hostname' => '45.113.122.253:3306',
'username' => 'your server username',
'password' => 'your server password',
'database' => 'server database name',
'dbdriver' => 'pdo',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE

Codeigniter Multiple database connection Access Denied issue

in database.php
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => 'bd1',
'password' => 'pass3214',
'database' => 'db1',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
$db['conncetdbtest'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => 'db2',
'password' => 'pass123',
'database' => 'db2',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
in test.php in view
<?php
$DB2 = $this->load->database('conncetdbtest' , TRUE);
$querydb2 = $DB2 ->select('*')->get('test');
print_r($querydb2);
?>
When I run the the code , showing me Message: mysqli::real_connect(): (HY000/1045): Access denied for user 'db2'#'localhost' (using password: YES).
Do not able to solve . Please help me .

uploading codeigniter project with database on 000webhost

The following error occurred while running the URl of my codeigniter project with database in 000webhost, the configuration of the database is given below.
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => 'id4100798_skyloade_msd',
'password' => '******',
'database' => 'id4100798_skyloade_msd',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
it give the following error when we browse the url
error :
Message: Unable to locate the model you have specified: Data
URL:
https://medicalsociodoc.000webhostapp.com/SiteController
it is working fine on localhost.

CodeIgniter mysqli - An Error Was Encountered Invalid DB driver

if i change dbdriver from mysqli to mysql it's working but not in mysqli
What would be the problem?
database.php - database config
$active_group = 'default';
$query_builder = TRUE;
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => '',
'password' => '',
'database' => '',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => FALSE,
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
Please make sure MySQLi Driver is installed and enabled in Apache.
There are three solutions for you
Make sure php-mysqli is installed and enable in apache.
Check System Directory of Codeigniter. If the mysql/mysqli directory not exist at that place then copy it from the fresh codeigniter.
Switch the driver from mysqli to pdo.
$active_group = 'default';
$query_builder = TRUE;
$db['default'] = array(
'dsn' => 'pgsql:host=localhost;port=3306;dbname=myproject',
'hostname' => 'localhost',
'username' => 'root',
'password' => '*******',
'database' => 'myproject',
'dbdriver' => 'pdo',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => FALSE,
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
You can follow the full tutorial from the reference article.
https://mytechnode.com/invalid-db-driver-in-codeigniter-mysqli/

A Database Error Occurred Error Number: It doesn't give a error number

This is the error:
A Database Error Occurred
Error Number:
select a.FOLIO, a.direccion, b.DESC_COLONIA, C.DESC_MPIO
from emergencias#db1 a INNER JOIN AMSGEOCODING#db1 Z ON A.FOLIO=Z.FOLIO inner join cat_colonia#db1 b on A.CVE_COL=b.cve_col and A.CVE_MPIO=b.cve_mpio and A.CVE_ent=b.cve_ent INNER JOIN CAT_MPIO#db1 C ON C.CVE_MPIO =A.CVE_MPIO AND C.CVE_ENT=A.CVE_ENT WHERE a.folio>=8782583 and z.LATITUD =0 and z.LONGITUD<>-1
Filename: C:\wamp\www\myapp\system\database\DB_driver.php
Line Number: 331
What could be wrong with this?
this is my C:\wamp\www\myapp\application\config\database.php
$active_group = 'default';
$query_builder = TRUE;
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost/orcl',
'username' => 'local',
'password' => 'password',
'database' => 'orcl',
'dbdriver' => 'oci8',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);

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