Maximum Grades By Making ready With 1Z0-183 Dumps UPDATED 2026 [Q46-Q62]

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Maximum Grades By Making ready With 1Z0-183 Dumps UPDATED 2026

Prepare 1Z0-183 Exam Questions [2026] Recently Updated Questions

Q46. Which two Flashback features require undo data to function properly?
(Choose two)

Flashback Table

Flashback Drop

Flashback Query

Flashback Database

Q47. Which two benefits are provided by using a recovery catalog instead of relying solely on the control file?
(Choose two)

Stores RMAN scripts and historical metadata

Allows cross-database reporting and centralized management

Eliminates need for archived logs

Stores redo log switch history

Q48. Which tool is typically used to perform an Oracle Grid Infrastructure installation for a standalone server?

Oracle Universal Installer (OUI)

DBCA

Oracle Restart Configurator

Net Configuration Assistant

Q49. What is the purpose of SQL Performance Analyzer (SPA)?

To identify optimizer parameter changes

To capture and replay real application workloads

To predict the impact of database changes on SQL performance

To adjust SGA components dynamically

Q50. What is the primary purpose of an Automatic Workload Repository (AWR) baseline?

To schedule automatic database backups

To define a reference workload for comparing performance over time

To enable flashback database functionality

To store SQL Plan Baselines for specific queries

Q51. Which two features are supported by AutoUpgrade?
(Choose two)

Pre-upgrade checks and automated fixups

Automated SQL Tuning Advisor task generation

Multiple database upgrades in a single job

RMAN block change tracking disablement

Q52. When creating a new PDB from PDB$SEED, which two options can you specify?
(Choose two)

Custom administrative user and password

Separate undo tablespace per PDB by default

File name conversion for datafiles

Automatic upgrade scripts execution for backward compatibility

Q53. What differentiates an incremental level 1 cumulative backup from an incremental level 1 differential backup?

Cumulative backups capture changes since the last level 0, differential captures since last level 1

Cumulative backups capture only changed blocks from the last backup, differential captures entire database

Differential backups reset the backup optimization counters, cumulative backups do not

There is no difference; both back up changes since the last level 0 backup

Q54. What is the effect of issuing ALTER PLUGGABLE DATABASE ALL OPEN READ ONLY;?

All PDBs in the CDB are opened in READ WRITE mode

Only PDB$SEED opens, as it is the default template PDB

All user-created PDBs except PDB$SEED open in read-only mode

The command fails because PDB$SEED cannot change open mode

Q55. Which two tasks are automated during a Grid Infrastructure upgrade?
(Choose two)

ASM listener relocation

Cluster node rolling patching

Conversion of database links

Validation of cluster node status

Q56. What differentiates an Application PDB from a regular PDB in Oracle 23ai multitenant architecture?

Application PDBs cannot host schemas or objects

Application PDBs share a common application root that enables simplified patching and upgrades

Application PDBs automatically inherit all common users from all other PDBs

Application PDBs require dedicated listener processes

Q57. Which two tools are part of the Real Application Testing option?
(Choose two)

SQL Performance Analyzer (SPA)

Database Replay

Active Session History (ASH)

LogMiner

Q58. What is the role of the RMAN recovery catalog compared to the control file?

It stores backup metadata permanently, whereas control file records may be overwritten

It manages redo log files directly

It replaces the need for archived redo logs

It automatically encrypts all backups

Q59. What is the difference between opatch and opatchauto
Response:

opatchauto handles both GI and database patching, while opatch is used for a single Oracle Home

opatch is GUI-based, while opatchauto is command-line only

opatchauto applies interim patches, and opatch applies bundle patches

opatch can patch Grid Infrastructure, but opatchauto cannot

Q60. How does Oracle Database 23ai enforce security isolation between different PDBs within the same CDB?

By sharing the SYSTEM and SYSAUX tablespaces across all PDBs

By using a separate data dictionary and undo tablespace for each PDB

By ensuring each PDB has its own data dictionary and schemas isolated from others

By automatically encrypting all cross-PDB links without user configuration

Q61. Which feature allows RMAN to skip backing up unchanged blocks when using incremental backups?

Backup compression

Block change tracking

Crosscheck

Flashback logging

Q62. Which configuration change can improve RMAN backup performance for large databases?

Disabling block change tracking

Enabling backup compression at BASIC level

Increasing the number of RMAN channels for parallelism

Using archivelog-only backups exclusively

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