Here's a silly little issue I hit this afternoon - mostly a case of "administrator error" but a time waster nevertheless.
To
recap, there was a big change to Web Tier administration in 12.1.2 in
that OHS is controlled with what's now called the "WebLogic Management
Framework" - in short this means OHS instance configuration is handled
via WLST and lifecycle (start/stop etc) by Node Manager (i.e. OPMN has
gone). You have a choice of either co-locating OHS in your existing
WebLogic domain (diagrams from the Oracle Documentation):
Otherwise you can have OHS on its own: Read the complete article here.
For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center.