What is the current consensus on the old "app server" vs the tomcat based one?

What are a few of your opinions on this topic? How do they compare in the following ways: Speed an efficiency, reliability, complexity in configuration, flexibility?

We are planning on upgrading from OE 11.6 soon and it is my understanding the old app server is not compatible with versions 12.0 and above.

We are running Linux on our servers.



ProgressTalk.com Moderator
Staff member
Unless you're running Webspeed, then the switch to PASOE is usually very simple. Yes the config side's a little bit more complicated, or can be, but the benefits far outweigh the difficulties. Plus, as Tom says, Classic AppServer is dead. At some point you will be forced to migrate in order to stay on a supported OE release, so do it now.

Rob Fitzpatrick

ProgressTalk.com Sponsor
11.7 is the last release in which the "Classic" App Server is available. After that, only the Tomcat-based PASOE is available.

There is certainly a learning curve with PASOE but it is the future. My advice is to embrace it as soon as you can; it's not as if App Server is going to make a comeback.

Migrating existing App Server-based applications to it isn't too difficult. We've migrated our App Server-based web services to PAS.

PAS gives several benefits from being Tomcat-based. It uses the Spring security framework, it can be used with third-party Tomcat load balancers, and there is information available online on best practices for configuration, hardening, etc., and you will be able to find people in the job market with Tomcat experience (much more readily than finding people with App Server experience). It also ships with web apps that help you inspect the health of, manage, and monitor your PAS instances and apps.

Most importantly, it will grow and improve over time as PSC invests in new features, better performance, reliability, security, and bug fixes. App Server is frozen in time. It will never improve and when you inevitably upgrade to 12.x you'll have to leave it anyway. Yes, there will be bumps along that road but you have to travel on it eventually. Might as well get the bumps behind you sooner rather than later.