A. Multiple database upgrades in a single job
B. Pre-upgrade checks and automated fixups
C. RMAN block change tracking disablement
D. Automated SQL Tuning Advisor task generation
A. Oracle Label Security (OLS) applied at the container root
B. PDB-Scoped Unified Auditing policies
C. Data Redaction with shared policy inheritance
D. Fine-Grained Auditing (FGA) with database-wide default policy
A. Differential backups reset the backup optimization counters, cumulative backups do not
B. Cumulative backups capture only changed blocks from the last backup, differential captures entire database
C. Cumulative backups capture changes since the last level 0, differential captures since last level 1
D. There is no difference; both back up changes since the last level 0 backup
A. Enable block change tracking
B. Use multiple channels for parallel backup
C. Restrict memory usage by disabling compression
D. Disable redo log archiving during backup
A. To ensure the optimizer uses only known, verified execution plans
B. To dynamically change SQL text at runtime
C. To lock execution plans for a fixed period
D. To disable adaptive query optimization features
A. PDB$SEED can be opened in READ WRITE mode for patching
B. MOUNT is the default state when a PDB is created
C. Dropping a PDB can optionally keep its datafiles for reuse
D. PDB states are persisted automatically without explicit SAVE STATE
A. The PDB cannot open unless an instance parameter is modified
B. The PDB opens only for read-only transactions and remains in that mode permanently
C. The PDB opens in read-write mode and remains open permanently
D. The PDB opens in read-write mode but returns to MOUNT state on CDB restart
A. It merges temporary and permanent tablespaces
B. It bypasses datafile header checks
C. It creates a new incarnation of the database and resets the redo sequence
D. It preserves the SCN for the next recovery
