Hi,
I have a problem with an installation of Alfresco. First of all, I am new to Alfresco, so if I ask some noob questions, please don´t blame me 
I have a organisation that came to me with a broken installation of Alfresco, version 4.2c. It´s a standalone installation, without docker. Installed on Ubuntu 12.04.
The Alfresco instance doesn´t work at all anymore. When I try to start it, it shows:
user01@cms01:/opt/alfresco$ sudo ./alfresco.sh start
/opt/alfresco/tomcat/scripts/ctl.sh : tomcat (pid 1731) already running
When you try to open the Alfresco page, it takes ages, and then it doesn´t load (Keeps loading forever).
When I try to stop Alfresco it shows this:
user01@cms01:/opt/alfresco$ sudo ./alfresco.sh stop
Using CATALINA_BASE: /opt/alfresco/tomcat
Using CATALINA_HOME: /opt/alfresco/tomcat
Using CATALINA_TMPDIR: /opt/alfresco/tomcat/temp
Using JRE_HOME: /opt/alfresco/java
Using CLASSPATH: /opt/alfresco/tomcat/bin/bootstrap.jar:/opt/alfresco/tomcat/bin/tomcat-juli.jar
Using CATALINA_PID: /opt/alfresco/tomcat/temp/catalina.pid
Where do I need to start to get this solved? We've looked multiple hours/days into this problem, without any succes.
I've also tried to get a new install (docker), and import the databse, but when importing the old databse to the new installation, it throws a lot of errors (I think they are not compatible).