ORACLE 1Z0-182 PRACTICE EXAMS FOR THOROUGH PREPARATION

Oracle 1Z0-182 Practice Exams for Thorough Preparation

Oracle 1Z0-182 Practice Exams for Thorough Preparation

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Oracle Database 23ai Administration Associate Sample Questions (Q24-Q29):

NEW QUESTION # 24
Which three are benefits of using temp UNDO when performing DML on global temporary tables?

  • A. It reduces the amount of UNDO stored in the UNDO tablespace.
  • B. It reduces I/Os to the SYSAUX tablespace.
  • C. It permits DML on global temporary tables even if the database is opened read-only.
  • D. It reduces I/Os to the SYSTEM tablespace.
  • E. It reduces the amount of redo generated.

Answer: A,D,E

Explanation:
Temp UNDO, introduced in Oracle 12c and refined in 23ai, stores undo for global temporary tables (GTTs) in temporary tablespaces:
A . It permits DML on GTTs even if the database is opened read-only.False. In read-only mode, DML on GTTs is allowed regardless of temp UNDO, as GTT data is session-private, but temp UNDO doesn't specifically enable this.
B . It reduces the amount of UNDO stored in the UNDO tablespace.True. Temp UNDO stores undo in the temporary tablespace, reducing usage of the permanent UNDO tablespace.
C . It reduces I/Os to the SYSTEM tablespace.True. By avoiding permanent undo, it reduces metadata updates in the SYSTEM tablespace related to undo management.
D . It reduces the amount of redo generated.True. Temp UNDO changes are not redo-logged to the same extent as permanent undo, minimizing redo generation.
E . It reduces I/Os to the SYSAUX tablespace.False. SYSAUX is unrelated to undo management; temp UNDO affects temporary and SYSTEM tablespaces.


NEW QUESTION # 25
Which three statements are true about a dedicated server configuration?

  • A. The DBA configures the maximum number of dedicated server processes that can share the samedispatcher process.
  • B. Each dedicated server process has its own dispatcher process.
  • C. A dedicated server process can be spawned without a listener when using local clients.
  • D. A dedicated server process can be spawned by the listener when using local clients.
  • E. A dedicated server process may be reused by a new session after the session using that process terminates.
  • F. A dedicated server process communicates directly with a client or middle-tier process once the session is established.

Answer: C,D,F

Explanation:
A .False. Dispatchers are for shared servers, not dedicated.
B .False. Dedicated processes die with the session.
C .True. Direct client-server communication occurs.
D .False. No dispatchers in dedicated mode.
E .True. Listener spawns for local/remote clients.
F .True. Local logins (e.g., sqlplus /) bypass the listener.


NEW QUESTION # 26
Which two statements are true about database instances and Real Application Clusters (RAC)?

  • A. Two RAC databases can share their instances.
  • B. A RAC database can have instances on separate servers.
  • C. A RAC database must have two or more instances.
  • D. A RAC database must have three or more instances.
  • E. A RAC database can have one instance.

Answer: B,E

Explanation:
A .False. RAC can run with one instance (degraded mode).
B .True. Possible, though not typical for RAC.
C .False. No minimum of three.
D .True. RAC instances run on separate nodes.
E .False. Instances are DB-specific in RAC.


NEW QUESTION # 27
At which two container database levels can COMMON Unified Audit Policies be used?

  • A. At the Application Root level of an Application Container.
  • B. At any level by using the COMMON option in the policy.
  • C. COMMON Unified Audit Policies can only be created at CDB level to monitor DBA operation at any level.
  • D. At the PDB level if the policy is created by a COMMON user.
  • E. At the CDB level.

Answer: D,E

Explanation:
A .False. Not limited to CDB; PDBs can use common policies.
B .True. Common policies apply at CDB level.
C .False. Application Root uses app-specific policies.
D .False. "COMMON option" isn't a feature; policies are common by creation context.
E .True. A common user can create policies for PDBs.


NEW QUESTION # 28
Which two methods can be used to purge audit records of the Unified Audits?

  • A. Use DBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL as a privileged user to manually purge audit records.
  • B. Only the owner of a Unified Audit Policy can purge audit records by resetting the policy.
  • C. Use DBMS_AUDIT_MGMT.DELETE_AUDIT_RECORDS('POLICY_NAME') as a privileged user to manually purge audit records of a specified Unified Policy.
  • D. Only viewed audit records can be purged from Unified Audits.
  • E. Use DBMS_AUDIT_MGMT.DELETE_AUDIT_RECORDS('POLICY_NAME') as a privileged user to manually purge audit records of a specified Unified Policy.
  • F. Use DBMS_AUDIT_MGMT.CREATE_PURGE_JOB as a privileged user to schedule an automatic purge job.

Answer: A,F

Explanation:
False. No such procedure exists in DBMS_AUDIT_MGMT. The package offers CLEAN_AUDIT_TRAIL and CREATE_PURGE_JOB, but nothing targets a specific policy's records by name in this format. You can filter records in UNIFIED_AUDIT_TRAIL by policy (e.g., SELECT * WHERE UNIFIED_AUDIT_POLICIES = 'POLICY_NAME'), but purging is all-or-nothing or time-based, not policy-specific via a single command.
Why Incorrect:This appears to be a fabricated or misinterpreted option, possibly confusing audit policy management with trail purging.
Explanation:
Unified Auditing in Oracle 23ai consolidates audit records into a single trail, managed via the DBMS_AUDIT_MGMT package. Let's evaluate each option with extensive detail:
A : Only viewed audit records can be purged from Unified Audits.
False. There's no concept of "viewed" audit records restricting purging. Unified Audit records (stored in UNIFIED_AUDIT_TRAIL) can be purged based on time, policy, or manual intervention, regardless of whether they've been viewed. This option misrepresents audit management capabilities.
Mechanics:Purging is controlled by retention policies or explicit commands, not view status. For example, records older than a set retention period (e.g., 90 days via DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_PROPERTY) are eligible for purging.
Why Incorrect:No Oracle documentation ties purging to viewing, making this a fabricated limitation.
B : Use DBMS_AUDIT_MGMT.CREATE_PURGE_JOB as a privileged user toschedule an automatic purge job.
True. This procedure creates a scheduled job to automatically purge audit records based on a retention policy or custom criteria. It's a standard method for ongoing audit trail maintenance, requiring privileges like AUDIT_ADMIN.
Mechanics:Example: BEGIN DBMS_AUDIT_MGMT.CREATE_PURGE_JOB(AUDIT_TRAIL_TYPE => DBMS_AUDIT_MGMT.AUDIT_TRAIL_UNIFIED, JOB_FREQUENCY => 'DAILY', JOB_STATUS => DBMS_AUDIT_MGMT.JOB_ENABLED); END;. This schedules daily purges of old records, using the retention period set by SET_AUDIT_TRAIL_PROPERTY.
Practical Use:Ideal for production environments to prevent the audit trail from growing indefinitely (e.g., avoiding tablespace exhaustion in SYSAUX).
Edge Case:If no retention period is set, the job purges nothing until configured, highlighting the need for prior setup.
C : Only the owner of a Unified Audit Policy can purge audit records by resetting the policy.
False. Audit policies don't have "owners" in the traditional sense; they're created by users with AUDIT_ADMIN and managed globally. Resetting or disabling a policy (e.g., NOAUDIT POLICY my_policy) stops auditing but doesn't purge existing records. Purging is a separate operation via DBMS_AUDIT_MGMT.
Why Incorrect:This conflates policy management with audit trail cleanup, which are distinct in Oracle.
D : Use DBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL as a privileged user to manually purge audit records.
True. This procedure manually purges all Unified Audit records up to the current timestamp (or a specified time), requiring AUDIT_ADMIN privileges. It's a one-time cleanup tool.
Mechanics:Example: BEGIN DBMS_AUDIT_MGMT.CLEAN_AUDIT_TRAIL(AUDIT_TRAIL_TYPE => DBMS_AUDIT_MGMT.AUDIT_TRAIL_UNIFIED, USE_LAST_ARCH_TIMESTAMP => FALSE); END;. This clears the entire trail unless restricted by a timestamp.
Practical Use:Useful for immediate space reclamation or post-incident cleanup, unlike scheduled jobs.
Edge Case:If the audit trail is large, this may require significant undo space and time, potentially impacting performance.


NEW QUESTION # 29
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