procedure

Upgrading from 4.0d to 4.2c
1) Stop Alfresco
1.1) service alfresco stop
2) Copy contentstore
3) Copy contentstore.deleted
4) Copy mysql-connector-java-5.1.17.jar /opt/alfresco/tomcat/lib
5) Edit opt/alfresco/tomcat/shared/classes/alfresco-global.properties
5.1) db.driver=org.gjt.mm.mysql.Driver

db.username=alfresco

db.password=alfresco

db.name=alfresco

db.url=jdbc:mysql://localhost/alfresco

6) Restore mysql DB
6.1) mysql --user=alfresco --password=alfresco < alfresco.sql
7) start alfresco
7.1) service alfresco start