install recovery 12.1.0.5
a fresh install warmed me that it was going to use up most, but not all, of the target filesystem. it filled up to 100% and hung. I added some space to the target install and tried to "Retry" on the runInstaller console, but it hangs.
oracle.sysman.top.oms_2016-01-06_11-35-39-AM.log:
INFO: oracle.sysman.top.oms:Backup directory is /apps/database/oracle/product/gc_inst/em/EMGC_OMS1/sysman/backup
INFO: oracle.sysman.top.oms:Machine is Admin Server host. Performing Admin Server backup...
INFO: oracle.sysman.top.oms:Error: null
INFO: oracle.sysman.top.oms:Operation Failed...Please check /apps/database/oracle/product/gc_inst/em/EMGC_OMS1/sysman/log/emctl.log for details