OEM 13cR3: OEM Catalog Updation OFFLINE

In almost every environment the outside world access is restricted. 
So, in that case what do you do if you want to upload the OEM Catalog.

You follow the offline way. (Remember in Provisioning and Patching you must set the mode to offline)

How? 
Go to Setup --> Extensibility --> Self Update 

Then click on the Check Updates Button

And viola you get your steps on what needs to be done. 

So, I download the file on my server 

https://updates.oracle.com/Orion/Download/download_patch/p9348486_112000_Generic.zip

and you can download like this

$ wget https://updates.oracle.com/Orion/Download/download_patch/p9348486_112000_Generic.zip --http-user=MOS_USERNAME --http-password=MOS_PASS --no-check-certificate --output-document=p9348486_112000_Generic.zip

Next is simple just impor the file directly into your Database using emcli 

$ ./emcli login -username=sysman

$ ./emcli sync

$ ./emcli import_update_catalog -file=/u01/Templates/p9348486_112000_Generic.zip -omslocal

And after about 2 minutes it should be over, you should have now refreshed your Catalog Updation. 

The log is below for your nerdy reference and comparison 

Processing catalog for Agent Software

Processing catalog for Middleware Profiles and Gold Images

Processing catalog for Data Masking and Subsetting templates

Processing catalog for Extensibility Development Kit

Processing catalog for Plug-in

Processing catalog for Management Connector

Processing catalog for Compliance Content

Processing catalog for Informational

Processing catalog for Provisioning Bundle

Processing catalog for Event Monitoring Service

Processing catalog for ORAchk Metadata

Processing catalog for Diagnostic Tools

Successfully uploaded the Self Update catalog to Enterprise Manager. Use the Self Update Console to view and manage updates.

Time taken for import catalog is 29.921 seconds.