Oracle 12c: How to apply Oct 21 PSU – 12.1.0.2.211019

This activity is part of a GI upgrade from 12.1.0.2 to 19c, in which we need to apply latest PSU first, so here are the steps: 1:- Patches available here: 2:- (as ROOT) Update OPACH version to latest available. (p6880880_122010_Linux-x86-64.zip) 3:- (as ROOT) Run prepatch script. (RDBMS instances should be stopped first) 4:- GI patching:... » read more

How to Configure: Oracle Database Native Network Encryption

Setting up Network Encryption in our Oracle environment is very easy, we just need to add these lines to the sqlnet.ora on server side: Ideally, on the client side we should add these too: But since ENCRYPTION_CLIENT by default is ACCEPTED, if we see this chart, connection would be encrypted (ACCEPTED – REQUESTED case) Lets... » read more

How To fix: PDB in restricted

This is a weird case we had for a Customer where DB/PDB’s were running fine and after a restart, one of the PDB’s went to restricted YES.We don’t know why it went to restricted mode because there hasn’t been a patching activity for a while and DB had few restarts in the past with no... » read more