Hi,

From the error stack trace I can see Datasource is not configured properly, not able to load required classed from the Database. Please check is rule base setup completed and configure the jdbc/PegaRULES.

Hi Please verify if you have made the following changes 

1. Locate the PegaRULES datasource resource section. It will look similar to the following:

                              <resource-ref id="ResourceRef_1">

                              <description>PegaRULES datasource</description>

                                             <res-ref-name>jdbc/PegaRULES</res-ref-name>

                                                            <res-type>javax.sql.DataSource</res-type>

                                                            <res-auth>Container</res-auth>

                                                            <res-sharing-scope>Shareable</res-sharing-scope> <!--Shareable is default -->

</resource-ref>

1. Add the following line below the <description> line:

<lookup-name>java:jboss/PegaRULES</lookup-name>

1. 3. Add the lookup name for the PegaRULES Admin data source:

Locate the PegaRULES Admin datasource resource section. It will look similar to the following:

                              <resource-ref id="ResourceRef_2">

                                                            <description>PegaRULES Admin datasource</description>

                                                            <res-ref-name>jdbc/AdminPegaRULES</res-ref-name>

                                                            <res-type>javax.sql.DataSource</res-type>

                                                            <res-auth>Container</res-auth>

                              <res-sharing-scope>Shareable</res-sharing-scope> <!--Shareable is default -->

1.  Add the following line below the <description> line:

<lookup-name>java:jboss/AdminPegaRULES</lookup-name>

Also consider that lookup name should be same as your database jndi lookup value.