Michael Lai Michael Lai - 3 months ago 15
MySQL Question

ODBC connection error:No such command "odbc show" ODBC connection fail in asterisk*CLI

Problems: I am using AsteriskNow which running asterisk 2.0 server in VirtualBox. And i want to connect Asterisk with MySQL databases using ODBC modules. But it fails. When i started with asterisk*CLI> odbc show The command prompt shows that "No such command ODBC SHOW"

My Objectives: configure ODBC in asterisk to access MySQL from Asterisk's dialplan directly and dynamically.

What i did: I installed my AsteriskNow in VirtualBox. The version of asterisk is 2.0, the CentOS version 5.8 final. I firstly installed related Linux RPMs by

yum -y install unixODBC-devel
yum -y install libdbi-dbd-mysql
yum -y install mysql-connector-odbc

My detail configured files are as follows:


Description = MySQL connection to 'asterisk' database
Driver = MySQL
Database = asterisk
Server = localhost
UserName = root
Password = mypassword
Port = 3306
Socket = /var/lib/mysql/mysql.sock


# Driver from the mysql-connector-odbc package
# Setup from the unixODBC-libs package
Description = ODBC for MySQL
Driver = /usr/lib/libmyodbc3_r.so
Setup = /usr/lib/libodbcmyS.so
;Driver64 = /usr/lib64/libmyodbc3_r.so
;Setup64 = /usr/lib64/libodbcmyS.so
FileUsage = 1



When i used "isql" command to connect MySQL databases, it works fine
enter image description here

But when i started the console in CLI, input command odbc show . it shows No SUCH COMMAND "odbc show "

enter image description here

And i am confusing here, and do not know how to solve it. I googled it and find someone recommend to solve it by having the res_odbc.so module loaded. Thus i went through the file modules.conf and add those modification into files

preload => res_odbc.so
preload => res_config_odbc.so

After being modified, the complete file is as follow"

; Asterisk Module Loader configuration file

; Any modules that need to be loaded before the Asterisk core has been
; initialized (just after the logger has been initialized) can be loaded
; using 'preload'. This will frequently be needed if you wish to map all
; module configuration files into Realtime storage, since the Realtime
; driver will need to be loaded before the modules using those configuration
; files are initialized.
; An example of loading ODBC support would be:
preload => res_odbc.so
preload => res_config_odbc.so
; As FreePBX is using Local as the channel for queue members we need to make sure
; that pbx_config.so and chan_local.so are preloaded. If not, queue members
; will be marked as invalid until app_queue is reloaded.
preload => pbx_config.so
preload => chan_local.so
; Uncomment the following if you wish to use the Speech Recognition API
;preload => res_speech.so
; If you want, load the GTK console right away.
; KDE console is obsolete and was removed from Asterisk 2008-01-10
noload => pbx_gtkconsole.so
;load => pbx_gtkconsole.so
noload => pbx_kdeconsole.so
; Intercom application is obsoleted by
; chan_oss. Don't load it.
noload => app_intercom.so
; DON'T load the chan_modem.so, as they are obsolete in * 1.2

noload => chan_modem.so
noload => chan_modem_aopen.so
noload => chan_modem_bestdata.so
noload => chan_modem_i4l.so

; Trunkisavail is a broken module supplied by Trixbox
noload => app_trunkisavail.so

; Ensure that format_* modules are loaded before res_musiconhold
;load => format_ogg_vorbis.so
load => format_wav.so
load => format_pcm.so

; format_au.so is removed from Asterisk 1.4 and later, remove ; to enable
;load => format_au.so

; This isn't part of 'Asterisk' iteslf, it's part of asterisk-addons. If this isn't
; installed, asterisk will fail to start. But it does need to go here for native MOH
; to work using mp3's.
; Note that on a system with a high number of calls, using a compressed audio format for
; musiconhold takes CPU resources. Converting these files to ulaw/alaw makes the job
; much easier for your CPU.
load => format_mp3.so
load => res_musiconhold.so
; Load either OSS or ALSA, not both
; By default, load no console driver
noload => chan_alsa.so
noload => chan_oss.so
noload => app_directory_odbcstorage.so
noload => app_voicemail_odbcstorage.so

After did this, i went back the CLI console to reload the res_odbc.so. But it failed to find the res_odbc.so
enter image description here

I need someone give me hints on solving the ODBC connections problems.


In the AsteriskNOW environment, to get res_odbc.so, which is the module that provides the ODBC resource to Asterisk, you need to have the asterisk-odbc package installed.

(Depending on how your AsteriskNOW installation is configured with respect to the packages.asterisk.org repositories, you may need asterisk18-odbc or a similar versioned package instead.)

If you have res_odbc.so (check in /usr/lib/asterisk/modules for this file) and it is still not loading correctly, you should check the Asterisk logs in /var/log/asterisk for messages relating to res_odbc for more information.