IBM UrbanCode Deploy - Upgrading - Don't forget the database

So I'm upgrading my UCD installation, from 6.2.6.1.940532 to 6.2.7.0.951830, using the provided script install-server.sh as per this: -

….

     [echo] Installing IBM UrbanCode Deploy version 6.2.7.0.951830

     [echo] A previous version (6.2.6.1.940532) exists in the specified directory. Do you want to upgrade the currently installed version? Y,n [Default Y]
y
     [echo] 
     [echo] Installing IBM UrbanCode Deploy to: /opt/ibm/UCD/server
     [echo] JVM Version detected: 1.8.0
     [echo] JAVA_HOME: /opt/ibm/Java/jre
     [echo] NOTICE: Upgrading the server while there are processes currently running is not supported. Before proceeding with an upgrade, verify that there are no running processes on the Current Activity page.
     [echo] 
     [echo] Server upgrades cannot be rolled back. Please ensure that you have backed up the server's database and filesystem before proceeding. (press enter to continue)

   [delete] Deleting directory /opt/ibm/UCD/server/opt/tomcat/webapps/ROOT/static
     [copy] Copying 2 files to /mnt/ibm-ucd-install/bin/server
     [copy] Copying 168 files to /mnt/ibm-ucd-install/.tmp-old-lib
  [upgrade] Adding upgrade file for processing: /mnt/ibm-ucd-install/database/deploy/always/all/always_sql.xml
java.lang.Exception: Error trying to cancel currently running processes
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:88)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:57)

…

Caused by: : : com.ibm.db2.jcc.am.DisconnectNonTransientConnectionException: [jcc][t4][2043][11550][3.72.30] Exception java.net.ConnectException: Error opening socket to server ucd.uk.ibm.com/127.0.0.1 on port 60,006 with message: Connection refused. ERRORCODE=-4499, SQLSTATE=08001
…

Caused by: : com.ibm.db2.jcc.am.DisconnectNonTransientConnectionException: [jcc][t4][2043][11550][3.72.30] Exception java.net.ConnectException: Error opening socket to server ucd.uk.ibm.com/127.0.0.1 on port 60,006 with message: Connection refused. ERRORCODE=-4499, SQLSTATE=08001
…

Guess what I forgot to do ?

Yep, having rebooted this VM, I forgot to start DB2: -

su - db2inst1

db2start

Having done that, quelle surprise, the upgrade just worked …

...
[propertyfile] Updating property file: /opt/ibm/UCD/server/conf/installed.version
     [echo] After starting the server, you may access the web UI by pointing your web-browser at
     [echo] https://ucd.uk.ibm.com:8443 
     [echo] Installer Complete. (press return to exit installer)

   [delete] Deleting directory /tmp/install-6103865522074515176.tmp
     [copy] Copying 1 file to /opt/ibm/UCD/server/var/install-log

BUILD SUCCESSFUL
Total time: 3 minutes 1 second

UCD Fix List

Upgrading the server in interactive mode