I am installing a RHEL server with nginx and php that can connect to a db2 database, download and install the "IBM Data Server Client" package, also install the pecl library through:

pecl install ibm_db2

however when I do a connectivity test me responds with the following error:

[IBM] [CLI Driver] SQL10007N Message "0" could not be retrieved. Reason code: "3". SQLCODE = -1390

the code that I'm testing is:

$database = 'mydb';
$user = 'usr';
$password = 'pass';
$hostname = 'ipaddr';
$port = 9501;

$conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;" . "HOSTNAME=$hostname;PORT=$port;PROTOCOL=TCPIP;UID=$user;PWD=$password;";
$conn = db2_connect($conn_string, '', '');

if ($conn) {
    echo "Connection succeeded.";
else {
    echo db2_conn_error();
    echo db2_conn_errormsg();

am I missing something?


searching in the web I found in phpe-ditors this:

If you created a DB2 instance named db2inst1 in /home/db2inst1/, for example, you can add the following line to php.ini:


If you do not set this option in php.ini, you must issue the following command to modify your environment variables to enable access to DB2:

bash$ source /home/db2inst1/sqllib/db2profile

To enable your PHP-enabled Web server to access these functions, you must either set the ibm_db2.instance_name configuration option in php.ini, or source the DB2 instance environment in your Web server start script (typically /etc/init.d/httpd or /etc/init.d/apache).

The problem is that I don't know whats the value for ibm_db2.instance_name

Any idea ?

  • Looks like the DB2 environment is not set up properly. Make sure you execute $INSTANCE_HOME/sqllib/db2profile script.
    – mustaccio
    Jul 16, 2014 at 11:29
  • If you are looking for how to set up the DB2 environment, this was answered in another question: dba.stackexchange.com/questions/31336/adding-user-access-to-db2 Jul 16, 2014 at 12:49
  • @mustaccio: I do not understand what it means in my case $INSTANCE_HOME. since I only installed the client, not the server. In the installation process I do not create specific users for the database, the installation script indicated that the client is in "/opt/ibm/db2/V10.5/". Found in that directory and ran a script called "db2profile" in the subdirectory "cfg" but the error persists. Note that the installation was done with the root user.
    – PCJ
    Jul 16, 2014 at 15:25
  • @Chirs Aldrich: the post that you refer is about install the database and I just want the client, that is because, is a web server that will host a php app that need database connection to an existing DB2 installation.
    – PCJ
    Jul 16, 2014 at 15:29
  • 1) it would be better to create a client instance using the command db2icrt ( more details ) 2) make sure you source the profile: . /whatever/cfg/db2profile -- note the space after the .
    – mustaccio
    Jul 16, 2014 at 15:37

2 Answers 2


With the help of @mustaccio achieved do as follows:

First I added the user db2inst1:     

db2inst1 useradd

Then, I generated the instance (whatever it means)              

/opt/ibm/db2/V10.5/instance/db2icrt db2inst1

Edit the php configuration file (/etc/php.ini) for add the instance:     

 extension = / usr/lib64/php/modules/ibm_db2.so 
 ibm_db2.instance_name = db2inst1

Edit the initialization file of the php-fpm service (/etc/init.d/php-fpm), which in my case is the one who runs php, to do the source of the db2profile script under the user running this service each time it starts.

 #for DB2
 . /opt/ibm/db2/V10.5/cfg/db2profile

And finally restart the service:

php-fpm restart service

Thank you very much for the comments.


Small correction with the answer of @PCJ in my case

Added the user

useradd db2inst1

Ran the below command

/opt/ibm/db2/V11.1/instance/db2icrt db2inst1

Edited php.ini and added below lines


Then restarted the apache service

To test the connectivity, used "Example #2 Creating an uncataloged connection" in link

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