I have a really weird issue to solve. I'm getting following error line when trying to start Liferay Portal on Tomcat:
java.lang.IllegalStateException: Attempting to deploy an older Liferay Portal version. Current build version is 6201 and attempting to deploy version 6101.
at com.liferay.portal.tools.DBUpgrader.upgrade(DBUpgrader.java:105)
at com.liferay.portal.events.StartupAction.doRun(StartupAction.java:144)
at com.liferay.portal.events.StartupAction.run(StartupAction.java:52)
at com.liferay.portal.servlet.MainServlet.processStartupEvents(MainServlet.java:1306)
at com.liferay.portal.servlet.MainServlet.init(MainServlet.java:214)
at javax.servlet.GenericServlet.init(GenericServlet.java:160)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5015)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
I've found only topics where people actually wanted to upgrade portal and got this message. What my workspace looks like is as this:
I don't want to upgrade, I just want to have both versions present.
Thanks guys!
In the Liferay installation directory you'll typically find a file named portal-ext.properties. This typically has the configuration for the database that Liferay shall use. Both versions that you are running should point to a different database, then you can have both installations in paralell.
If you want to run them at the same time, you'll also need to modify tomcat (assuming that's the appserver you use. Look for all port="xxxx" declarations in tomcat/conf/server.xml and change them to distinct values (OOTB there are three for every tomcat installation). In Eclipse/Liferay IDE you can also find the port declaration in the server information screen.