We are currently running 3 instances. We have a sandbox, development, and test all on one server. Modifications do have to be made to the server.conf file so that you are pointing to the instance and db you want.
I had at one point 3 instances on one server, 2 7.1 instances and one 6.0 instance. We ran into an issue with starting up the application. We had to edit the Java settings to get the application to start, but it is a known issue if you are have AIX JRE 1.4.2.
I do not have a report, but these were the directions from HP support:
PPM 7.1 supports SDK 220.127.116.11 for IBM AIX OS, as you can find in the system requirement matrix guide.
I think I have found the resolution of this error after discussing with R&D. It was known issue for IBM AIX JRE 1.4.2.
On AIX, bouncycastle JARs need to be moved out of WEB-INF lib, otherwise, the security algorithm will fail as we see the errors thrown in the server log.
Workaround: Manually set the bouncycastle provider on AIX:
1. Copy bcprov-jdk13-133.jar from WEB-INF/lib into $JAVA_HOME/jre/lib/ext dir 2. Modify $JAVA_HOME/jre/lib/security/java.security to add the following line in security provider list: security.provider.5=org.bouncycastle.jce.provider.BouncyCastleProvider 3. Delete bcprov-jdk13-133.jar, bcprov-jdk14-129.jar from WEB-INF/lib
This was just one of the issues that we encountered just after the upgrade, but before we started the server.