While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck.
FORCE LOGGING is enabled for the database.
Which two could improve read performance? (Choose two.)

T schema owned by the RC12C user. The RCAT11 database contains an Oracle Database version 11g catalog schema owned by the RC11 user in which several databases are registered. Both the databases are open. You execute the RMAN commands: RMAN> CONNECT CATALOG rcl2c/passl2c@catdbl2c RMAN> IMPORT CATALOG rcll/pwdcatll@ractll Which two tasks are performed as part of the import?

Choose the best answer. Examine this configuration: 1. CDB1 is an Oracle container database from an older release. 2. PDB1, PDB2, PDB3, and PDB4 are pluggable databases in CDB1. A priority list UpgrdList has these entries: 1, pdb2 2, pdb1, pdb3 You execute this command: $ /u01/app/oracle/product/18.1.0/ db_1/rdbms/admin/dbupgrade -L UpgrdList In which order will the upgrade occur?

A user complains about poor database performance.
You want to verify if the user's session has waited for certain types of I/O activity. Which view displays all waits waited on by a session at least once?

Choose three. Which three are true about upgrading an application in an application container?