You get complaints from users of several different applications that performance has degraded over time. These applications run in this configuration: 1. There are three different databases and…

You get complaints from users of several different applications that performance has degraded over time. These applications run in this configuration: 1. There are three different databases and database instances. 2. Two of the poorly performing applications run in the same Pluggable Database (PDB) in an Oracle 12c multitenant Container Database (CDB) with four PDBs. 3. One of the poorly performing applications runs in a different PDB in the same CDB. 4. One of the poorly performing applications runs in an Oracle 12c non- CDB, which also hosts other applications. 5. You have the Oracle Resource Manager configured for the CDB, all PDBs, and the non-CDB. 6. Each application has a separate consumer group associated with the sessions that are running that application. A check of wait events for the sessions belonging to these applications shows that the sessions are waiting longer and that there are more sessions from other applications in the same database instance. You wish to avoid scaling up your Database as a Service (DBaaS) instance in Oracle Cloud. Which three should you check and possibly reconfigure to avoid the need to scale up the DBaaS instance?