
Query to get the front end URL from back-end
SELECT home_url FROM icx_parameters; http://hostname.domainname.com:8000/OA_HTML/AppsLogin

Below is the error message I received while I was trying to install Oracle Database 19c on Oracle Linux 7.
PRVF-7573 : Sufficient swap size is not available on node
As per my error on the installer screen I needed 16GB of SWAP space where as my system has just 4GB. So I need to add a swap file for the installation to continue.
Below steps will outline the steps for the same.
dd if=/dev/sdb of=/tmp/swap01 bs=1K count=16M
chmod 600 /tmp/swap01
mkswap /tmp/swap01
swapon /tmp/swap01
Make sure the bs (*) count is equal to your required SWAP space. Also, the /dev/sdb has enough storage as needed
Run the following query to find out who are the Oracle Apps Users currently Logged into the application.
SELECT DISTINCT icx.session_id, icx.user_id, fu.user_name, fu.description FROM icx_sessions icx, fnd_user fu WHERE disabled_flag != 'Y' AND icx.pseudo_flag = 'N' AND (last_connect + DECODE (fnd_profile.VALUE ('ICX_SESSION_TIMEOUT'), NULL, limit_time, 0 , limit_time, fnd_profile.VALUE ('ICX_SESSION_TIMEOUT')/60) / 24) > SYSDATE AND icx.counter < limit_connects AND icx.user_id = fu.user_id;
Oracle Database 20c is about to release this year but Oracle has already announce some wonderful features of 20c release in OOW and 20c Webcast.
Most Important things of this year is,
1) Oracle Cloud – Free Tier :
Always Free Services- 1 ADW, 1 ATP , 2 Compute services always free
2) De-support of non-cdb architecture, facilitating 3 PDB’s with no cost :
Few new enhancements which catches my eyes on Oracle Database 20c Release.
1) In-Memory Enhancements :
– Spatial & Text
– Vector Joins
– Hybrid Scans
– Auto populate and evict in-memory
Read more here about In-Memory Enhancements
https://blogs.oracle.com/in-memory/oracle-database-20c-aim-enhancements
2) New Binary JSON data type :
Read more here,
https://blogs.oracle.com/sql/how-to-store-query-and-create-json-documents-in-oracle-database
3) Auto Machin Learning in OML4py :
Automatically build and compare Machine Learning models
Read more here,
https://blogs.oracle.com/machinelearning/automated-machine-learning-for-data-scientists
4) Native Blockchain Table :
New blockchain type table. This allows only Inserts and select.
Read more here,
https://blogs.oracle.com/blockchain/blockchain-tables-in-oracle-database:-technology-convergence