You notice that the performance of your production 24x7 Oracle 12c database has significantly degraded. Sometimes, you are not able to connect to the database instance because it hangs.
How can you detect the cause of the degraded performance?
Which should be tuned first when doing a performance tuning exercise for an Oracle Database environment?
Choose two. Which two are true about an Oracle gold image-based installation in Oracle 18c and later releases?
Examine the command for creating pluggable database PDB2 in container database CDB2. Select three options, any one of which is required for it to execute successfully. (Choose three.)
Your SALES_ROOTapplication container has two application PDBs.
The SALES_APPapplication has a common table, FIN.REVENUE, in the two PDBs.
Examine this query and its output:
Which two are true? (Choose two.)