Ensure that the jta package is not installed and prevent it from being installed when you install Spacewalk.

To check if the jta package is installed:

# yum list installed | grep jta

To remove the jta package:

# yum remove jta

To prevent the jta package from being installed when you install Spacewalk, either disable the Oracle Linux 6 Add ons [ol6_addons] channel, or add the jta package to the exclude directive in the yum configuration file /etc/yum.conf, for example:

exclude=jta*

Enable access to the Spacewalk Server repository.

Spacewalk is installed from the Oracle Linux yum server at https://yum.oracle.com.

Download the latest the yum repository configuration file (https://yum.oracle.com/public-yum-ol6.repo) to the yum repositories directory (by default /etc/yum.repos.d) and enable the ol6_spacewalk20_server repository in that file.

Alternatively, you can create a yum repository configuration file, for example /etc/yum.repos.d/spacewalk20.repo, with the following content:

[ol6_spacewalk20_server]
name=Spacewalk Server 2.0 for Oracle Linux 6 ($basearch)
baseurl=https://yum.oracle.com/repo/OracleLinux/OL6/spacewalk20/server/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1

Install Spacewalk.

# yum install spacewalk-oracle

Configure Spacewalk.

If you are using an Oracle database, either on the same server or on a remote server, use the following command:

# spacewalk-setup --disconnected --external-db

Otherwise, use the following command:

# spacewalk-setup --disconnected

The following example shows an interactive configuration:

# spacewalk-setup --disconnected --external-db
 * Setting up Oracle environment.
 * Setting up database.
 ** Database: Setting up database connection for Oracle backend.
 Database service name (SID)? <orcl.domain.com>
 Database hostname [localhost]? <spacewalk-db.domain.com>
 Username? <spacewalk-db-user>
 Password? ** 
 Database: Testing database connection. 
 ** Database: Populating database. 
 *** Progress: ############################################################ 
 * Setting up users and groups. 
 ** GPG: Initializing GPG and importing key. 
 ** GPG: Creating /root/.gnupg directory 
 You must enter an email address. 
 Admin Email Address? <your.email@domain.com> 
 * Performing initial configuration. 
 * Activating Spacewalk. 
 ** Loading Spacewalk Certificate. 
 ** Verifying certificate locally. 
 ** Activating Spacewalk. 
 * Enabling Monitoring. 
 * Configuring apache SSL virtual host. 
 Should setup configure apache's default ssl server for you (saves original ssl.conf) [Y]? 
 ** /etc/httpd/conf.d/ssl.conf has been backed up to ssl.conf-swsave 
 * Configuring tomcat. 
 ** /etc/sysconfig//tomcat6 has been backed up to tomcat6-swsave 
 ** /etc/tomcat6//server.xml has been backed up to server.xml-swsave 
 ** /etc/tomcat6//web.xml has been backed up to web.xml-swsave 
 * Configuring jabberd. 
 * Creating SSL certificates. 
 CA certificate password? 
 Re-enter CA certificate password?
 Organization? <Oracle Demo>
 Organization Unit [spacewalk.domain.com]? 
 Email Address [your.email@domain.com]? 
 City? <Redwood Shores>
 State? <CA>
 Country code (Examples: "US", "JP", "IN", or type "?" to see a list)? <US>
 ** SSL: Generating CA certificate. 
 ** SSL: Deploying CA certificate. 
 ** SSL: Generating server certificate. 
 ** SSL: Storing SSL certificates. 
 * Deploying configuration files. 
 * Update configuration in database. 
 * Setting up Cobbler.. 
 Processing /etc/cobbler/modules.conf 
 `/etc/cobbler/modules.conf' -> `/etc/cobbler/modules.conf-swsave' 
 Processing /etc/cobbler/settings `/etc/cobbler/settings' -> `/etc/cobbler/settings-swsave' 
 cobblerd does not appear to be running/accessible 
 Cobbler requires tftp and xinetd services be turned on for PXE provisioning functionality.
 Enable these services [Y]? 
 cobblerd does not appear to be running/accessible 
 * Restarting services. 
 Installation complete. 
 Visit https://spacewalk.domain.com to create the Spacewalk administrator account.