This was really handy when I stood up my OEM 12cR3 environment

Monitoring Templates can be exported and imported with a few mouse clicks

  1. On existing OMS, open Enterprise | Monitoring | Monitoring Templates page
  2. Select the monitoring template to copy
  3. Hit the Export button to dump the template to a zip file.   The zip file will be copied to your Downloads directory.  The export of my host monitoring template was put into a file named host_MT.zip and the export of database monitoring template was put into oracle_database_MT.zip by default.
  4. On the new OMS, open the same Enterprise | Monitoring | Monitoring Templates page
  5. Press the Import button
  6. Choose that same zip file (host_MT.zip, etc.)
  7. Presto