1Z0-082 Study Guide 2026
Everything you need to pass the 1Z0-082 exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 1Z0-082 Exam Format at a Glance
📚 1Z0-082 Topics to Study (21)
✍️ Sample 1Z0-082 Questions & Answers
1. When a table is dropped using the DROP TABLE command in Oracle, where does it go by default?
By default in Oracle 10g and later, dropped tables are moved to the Recycle Bin and can be recovered using the FLASHBACK TABLE ... TO BEFORE DROP statement.
2. Which Oracle feature is primarily used for monitoring database performance in real-time?
The Automatic Workload Repository (AWR) is an Oracle feature that automatically collects, processes, and maintains performance statistics for problem detection and self-tuning. It captures snapshots of database performance metrics at regular intervals, providing a historical record that can be analyzed to identify performance bottlenecks and trends. AWR is crucial for proactive performance management and diagnostics.
3. Which of the following is a mandatory background process in an Oracle Database?
The Log Writer (LGWR) is a mandatory background process in an Oracle Database. Its crucial role is to write the contents of the redo log buffer to the redo log files on disk. This ensures that all changes made to the database are permanently recorded, providing a vital mechanism for database recovery and maintaining data integrity.
4. When using Automatic Undo Management (AUM), what happens if the instance starts and the undo tablespace specified in the `UNDO_TABLESPACE` parameter is not available?
If the specified undo tablespace is unavailable, or if none is specified and no undo tablespace is available, the instance will still start. However, it will store undo records in the `SYSTEM` tablespace. This is a non-recommended configuration, and an alert will be written to the alert log to warn the DBA. [1, 5]
5. Which DDL command is used to modify an existing column's data type or add a new column to a table?
The ALTER TABLE statement is used to modify existing table structure, including adding, modifying, or dropping columns and constraints.
6. Which data dictionary view lists all indexes owned by the current user?
USER_INDEXES shows all indexes owned by the currently connected user, providing details such as index type, uniqueness, and associated table.