[Oct-2025] Dumps Brief Outline Of The 1Z0-182 Exam - Dumps4PDF
1Z0-182 Training & Certification Get Latest Oracle Database 23ai
Oracle 1Z0-182 Exam Syllabus Topics:
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NEW QUESTION # 20
You have connected to a PDB to perform the administration operations of changing and verifying a system parameter that is PDB_MODIFIABLE. What is the appropriate mode to open the PDB to achieve this?
- A. RESTRICTED WRITE ONLY
- B. READ ONLY
- C. RESTRICTED READ ONLY
- D. READ WRITE
Answer: D
Explanation:
To change a PDB_MODIFIABLE parameter, the PDB must be in READ WRITE mode, allowing ALTER SYSTEM commands to modify parameters stored in the PDB's SPFILE or memory. READONLY modes prevent modifications, and no RESTRICTED WRITE ONLY mode exists.
NEW QUESTION # 21
Which two statements are true about database instances and Real Application Clusters (RAC)?
- A. A RAC database must have three or more instances.
- B. A RAC database can have one instance.
- C. A RAC database must have two or more instances.
- D. Two RAC databases can share their instances.
- E. A RAC database can have instances on separate servers.
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 # 22
Which two statements are true about the UNLIMITED TABLESPACE system privilege and space quota?
- A. It is overridden by a space quota specified for the user.
- B. It allows a user to have unlimited space in any tablespace in the database.
- C. By default, users have no quota on their default permanent tablespace.
- D. It allows a role to have unlimited space in any tablespace in the database.
- E. It allows a user to have unlimited space only in their default permanent tablespace.
Answer: A,B
Explanation:
A .True. Grants unlimited space across all tablespaces.
B .True. Explicit quotas override the privilege.
C .False. Not limited to default tablespace.
D .False. Roles can't have this privilege directly.
E .False. Default is zero quota unless specified.
NEW QUESTION # 23
You want to apply the principle of least privilege in all your live databases. One of your requirements is to revoke unnecessary privileges from all users who have them using Privilege Analysis. Which two types of analyses can be done using the DBMS_PRIVILEGE_CAPTURE package?
- A. Analysis of privileges granted directly to a role that are then used by a user who has been granted that role.
- B. Analysis of privileges that a user has on other schemas' objects.
- C. Analysis of privileges granted indirectly to a role that are then used by a user who has been granted that role.
- D. Analysis of privileges that a user has on their own schema objects.
- E. Analysis of all privileges used by the SYS user.
Answer: A,C
Explanation:
A .False. Limited to captured privileges, not all schema objects.
B .False. SYS is excluded from capture.
C .True. Captures indirect role privileges used.
D .True. Captures direct role privileges used.
E .False. Focus is on roles, not self-owned objects broadly.
NEW QUESTION # 24
In which two ways would you disable timing information collected for wait events and much of the performance monitoring capability of the database?
- A. By executing the PL/SQL procedure DBMS_TIME_STATISTIC.DISABLE(TRUE).
- B. By executing the PL/SQL procedure DBMS_TIME_STATISTIC.LEVEL(BASIC).
- C. By setting the TIMED_STATISTICS system parameter to FALSE.
- D. By setting the STATISTICS_LEVEL parameter to BASIC.
- E. By setting the TIMED_STATISTICS_LEVEL system parameter to FALSE.
Answer: C,D
Explanation:
A .True. TIMED_STATISTICS = FALSE disables timing data collection.
B .False. No such procedure exists.
C .False. No TIMED_STATISTICS_LEVEL parameter exists.
D .True. STATISTICS_LEVEL = BASIC disables most performance monitoring.
E .False. No such procedure exists.
NEW QUESTION # 25
Which three statements are true about resumable space allocation in Oracle databases?
- A. All sessions must have the same timeout value when waiting for resumable space allocations.
- B. The AFTER SUSPEND event trigger can itself be suspended due to space conditions.
- C. A user's session may be suspended and resumed multiple times.
- D. Resumable space allocation is only possible with locally managed tablespaces.
- E. Resumable space allocation may be enabled for some sessions and not others.
- F. A user's session may be suspended even if the user has the UNLIMITED TABLESPACE system privilege.
Answer: C,E,F
Explanation:
A .True. Enabled per session with ALTER SESSION ENABLE RESUMABLE.
B .True. Multiple suspensions can occur in one session.
C .False. Works with dictionary-managed tablespaces too.
D .False. Timeout is session-specific.
E .True. Privilege doesn't prevent suspension; quota limits do.
F .False. Triggers execute but can't suspend themselves.
NEW QUESTION # 26
What is the result of the following command? ALTER PLUGGABLE DATABASE PDB1 DISCARD STATE;
- A. It should be used whenever PDB1 open mode needs to be changed.
- B. PDB1 is reverted to its default properties, which includes automatic opening after a CDB restart.
- C. PDB1 is reverted to its default properties, which includes not to automatically open after a CDB restart.
- D. It is unnecessary if the PDB is in the process of being upgraded.
Answer: C
Explanation:
A .False. DISCARD STATE isn't tied to upgrades; it resets PDB startup behavior.
B .True. Discards saved state, reverting PDB1 to manual open mode (not auto-open) after CDB restart.
C .False. Default is not auto-open; it's manual unless explicitly saved as OPEN.
D .False. Used for state management, not general mode changes (e.g., OPEN READ WRITE).
NEW QUESTION # 27
Which two statements are true about views used for viewing tablespace and datafile information?
- A. Tablespace free space can be viewed in DBA_TABLESPACES.
- B. A datafile can be renamed when the database is in MOUNT state and the new file name is displayed when querying DBA_DATA_FILES after the database is opened.
- C. V$TABLESPACE displays information that is contained in the control file about tablespaces.
- D. Tablespace free space can be viewed in V$TABLESPACE.
- E. V$TABLESPACE displays information about tablespaces contained in the data dictionary.
Answer: B,C
Explanation:
A .False. V$TABLESPACE doesn't show free space directly.
B .False. It's from the control file, not the data dictionary.
C .True. Renaming in MOUNT state updates DBA_DATA_FILES post-open.
D .False. DBA_TABLESPACES shows attributes, not free space directly (use DBA_FREE_SPACE).
E .True. V$TABLESPACE reflects control file data.
NEW QUESTION # 28
Which three Oracle database space management features will work with both Dictionary and Locally managed tablespaces?
- A. Oracle Managed Files (OMF).
- B. Online index segment shrink.
- C. Online table segment shrink.
- D. Capacity planning growth reports based on historical data in the Automatic Workload Repository (AWR).
- E. Automatic data file extension (AUTOEXTEND).
Answer: A,D,E
Explanation:
Dictionary-managed tablespaces (DMTs) use the data dictionary for extent management, whilelocally managed tablespaces (LMTs) use bitmaps. Let's evaluate compatibility:
A . Capacity planning growth reports based on historical data in the Automatic Workload Repository (AWR).
True. AWR tracks space usage (e.g., DBA_HIST_TBSPC_SPACE_USAGE) regardless of tablespace type, enabling growth reports for both DMTs and LMTs.
Mechanics:MMON collects metrics like segment growth, stored in SYSAUX, accessible via EM or scripts.
Practical Use:Helps predict when to add data files, universal across management types.
B . Online table segment shrink.
False. ALTER TABLE ... SHRINK SPACE requires LMTs with Automatic Segment Space Management (ASSM), unavailable in DMTs, which lack bitmap-based free space tracking.
Why Incorrect:DMTs use freelists, incompatible with shrink operations.
C . Online index segment shrink.
False. Like tables, ALTER INDEX ... SHRINK SPACE requires LMTs with ASSM, not supported in DMTs.
Why Incorrect:Same limitation as B; DMTs can't compact online.
D . Oracle Managed Files (OMF).
True. OMF automates file naming and placement (via DB_CREATE_FILE_DEST) for both DMTs and LMTs, agnostic to extent management.
Mechanics:Example: CREATE TABLESPACE ts1; creates an OMF file in either type.
Edge Case:DMTs are rare in 23ai, but OMF still applies.
E . Automatic data file extension (AUTOEXTEND).
True. AUTOEXTEND ON allows data files to grow as needed, supported in both DMTs and LMTs since early versions.
Mechanics:ALTER DATABASE DATAFILE ... AUTOEXTEND ON NEXT 100M; works universally.
NEW QUESTION # 29
You have connected to the CDB root as a common user with the CREATE PLUGGABLE DATABASE system privilege and issued the following command: SQL> CREATE PLUGGABLE DATABASE pdb1 ADMIN USER admin1 IDENTIFIED BY p1 ROLES = (CONNECT) FILE_NAME_CONVERT = ('PDB$SEEDdir', 'PDB1dir'); Which three are results of the CREATE command?
- A. The PDB must be opened Read Only to complete the integration of the PDB into the CDB.
- B. It creates a new local user ADMIN with SYSDBA privileges.
- C. It creates new default schemas for the PDB.
- D. It creates tablespaces to store metadata.
- E. It creates a new local user ADMIN with restricted privileges.
- F. After the PDB is created, it is automatically opened Read/Write.
Answer: C,D,E
Explanation:
A .True. PDBs inherit default schemas from the seed.
B .True. Metadata tablespaces (e.g., SYSTEM, SYSAUX) are created.
C .False. ADMIN1 (not ADMIN) isn't granted SYSDBA.
D .False. No read-only requirement post-creation.
E .False. PDBs start in MOUNTED state, not open.
F .True. ADMIN1 is a local user with CONNECT role only.
NEW QUESTION # 30
Which two statements are true about the tools used to configure Oracle Net Services?
- A. Oracle Net Manager can be used to centrally configure listeners on any database server target.
- B. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target.
- C. The lsnrctl utility requires a listener.ora file to exist before it is started.
- D. Oracle Net Manager can be used to locally configure naming methods on a database server.
- E. The Oracle Net Configuration Assistant is only used when running the Oracle installer.
Answer: B,D
Explanation:
A .False. lsnrctl can start a default listener without listener.ora.
B .True. EMCC provides centralized Net Services configuration.
C .False. NetCA can run standalone, not just during installation.
D .True. Net Manager configures local naming (e.g., TNSNAMES.ORA).
E .False. Net Manager is local, not centralized like EMCC.
NEW QUESTION # 31
Which two SQL Plan Management Advisor tasks are part of Automatic Maintenance Tasks?
- A. The Automatic SQL Plan Management Evolve Advisor task, which evolves plans that have recently been added as the SQL plan baseline for statements.
- B. The Automatic SQL Access Advisor task, which is used to manage an application SQL load.
- C. The Automatic Index Advisor task, which is used to create and maintain table indexes based on the DML load and operations.
- D. The Automatic SQL Tuning Advisor tasks, which would examine the performance of high-load SQL statements and make recommendations for those statements.
- E. The Automatic SQL Performance Analyzer task, which is used to provide details about impact of database changes to application SQL batch.
Answer: A,D
Explanation:
Automatic Maintenance Tasks (AMTs) in 23ai optimize database performance. Let's explore:
A .False. SQL Access Advisor exists but isn't an AMT; it's manual or invoked separately.
B .False. SQL Performance Analyzer assesses change impacts but isn't part of AMTs.
C .False. No "Automatic Index Advisor" exists as an AMT; Auto Index is a separate feature.
D .True. The SPM Evolve Advisor task (part of ORA$AUTOTASK) automatically evolves SQL plan baselines, testing and accepting new plans.
Mechanics:Runs in maintenance windows, managed by DBMS_SPM.
E .True. SQL Tuning Advisor (STA) runs automatically via AMTs, tuning high-load SQL.
Mechanics:Identifies candidates from AWR and suggests indexes, profiles, etc.
NEW QUESTION # 32
What services does the Automatic Workload Repository (AWR) provide for the database self-tuning functionality?
- A. Creates a new PDB by plugging in a previously unplugged Non-CDB.
- B. Enables the creation of a Non-CDB from a CDB.
- C. Simplifies the process of migrating Non-CDB databases to the cloud.
- D. Creates a new PDB with the original SID of the Non-CDB.
Answer: C
Explanation:
A .False. AWR doesn't create PDBs.
B .True. AWR stats aid migration planning (e.g., performance baselines).
C .False. AWR doesn't convert CDB to Non-CDB.
D .False. SID management isn't AWR's role.
NEW QUESTION # 33
You execute this command: CREATE BIGFILE TABLESPACE big_tbs DATAFILE '/u01/oracle/data/big_f1.dbf' SIZE 20G; Sufficient storage is available in filesystem /u01. Which two statements are true about the BIG_TBS tablespace?
- A. It must be bigger than the largest SMALLFILE tablespace.
- B. Additional data files may not be added.
- C. AUTOEXTEND is possible for the datafile.
- D. It will always have a 32K blocksize.
- E. It will be a dictionary-managed tablespace by default.
Answer: B,C
Explanation:
A .False. LMT is default in 23ai.
B .True. Bigfile tablespaces have one data file only.
C .True. AUTOEXTEND works with bigfile data files.
D .False. Block size defaults to DB_BLOCK_SIZE (e.g., 8K).
E .False. No size comparison requirement.
NEW QUESTION # 34
Which data dictionary view describes the data sources of external tables?
- A. DBA_ALL_USER_TABLES
- B. DBA_ALL_USER_EXTERNAL_LOCATIONS
- C. DBA_ALL_USER_EXTERNAL_TABLES
- D. DBA_ALL_USER_TAB_COLUMNS
Answer: B
Explanation:
A .True. DBA_EXTERNAL_LOCATIONS (or prefixed variants) shows external table data sources (e.g., file paths).
B-D .False. These views cover columns or tables but not external sources specifically.
NEW QUESTION # 35
Which statement is true about the PDB_DBA role granted to a local user during the creation of a new PDB?
- A. The role has the privileges to create and manage users within the PDB.
- B. The role has the privileges to perform DDL operations on all local schema objects.
- C. No privileges are provided with the PDB_DBA role.
- D. The role has the privileges to administer the PDB.
Answer: D
Explanation:
A .True. PDB_DBA grants admin rights (e.g., CREATE SESSION, ALTER SYSTEM) within the PDB.
B .False. DDL on objects requires ownership or explicit grants.
C .False. User management needs CREATE USER privilege, not inherent.
D .False. It includes multiple privileges, not none.
NEW QUESTION # 36
Which two tasks can be performed in the NOMOUNT state?
- A. Enabling online redo log archiving.
- B. Re-creating control files.
- C. Full database recovery.
- D. Creating a database.
- E. Renaming data files.
Answer: B,D
Explanation:
A .False. Requires MOUNT to access data files.
B .False. Requires MOUNT for redo logs.
C .True. CREATE DATABASE runs in NOMOUNT.
D .True. CREATE CONTROLFILE is possible.
E .False. Recovery needs MOUNT or OPEN.
NEW QUESTION # 37
Which two statements are true about User Authentication in an Oracle Database?
- A. REMOTE_LOGIN_PASSWORDFILE must be set to EXCLUSIVE to permit password changes for system-privileged administrative users.
- B. Operating System authentication may be used for system-privileged administrative users.
- C. Password File authentication must be used for system-privileged administrative users.
- D. Password authentication must be used for system-privileged administrative users.
- E. Password File authentication is supported for any type of database user.
Answer: B,C
Explanation:
User authentication in Oracle 23ai determines how users (especially administrative ones) connect to the database. Let's analyze each option with extensive detail:
A . Operating System authentication may be used for system-privileged administrative users.
True. OS authentication allows users mapped to OS accounts (e.g., ops$oracle) to connect without a password, often used for administrative users like SYS or SYSTEM. This is configured by creating an externally authenticated user (e.g., CREATE USER "OPS$ORACLE" IDENTIFIED EXTERNALLY) and relies on the OS to verify identity.
Mechanics:When a user logs in via sqlplus / as sysdba, Oracle checks the OS user against the dba group (Unix) or ORA_DBA (Windows). If matched, no password is needed, leveraging OS security.
Practical Use:Common for DBAs managing local instances, reducing password management overhead.
Edge Case:Requires REMOTE_LOGIN_PASSWORDFILE=NONE for exclusive OS auth, but this isn't mandatory if a password file exists alongside.
Historical Note:Introduced in early Oracle versions, this remains a robust option in 23ai for local admin access.
B . Password authentication must be used for system-privileged administrative users.
False. "Must" is incorrect; password authentication (e.g., sqlplus sys/password) is an option, not a requirement. OS authentication or password file authentication can also be used for users like SYS. This option overstates the necessity of password-based login.
Why Incorrect:Oracle's flexibility allows multiple methods, contradicting the absolute phrasing here.
C . Password File authentication is supported for any type of database user.
False. Password file authentication is restricted to users with SYSDBA, SYSOPER, or similar system privileges (e.g., SYSBACKUP). Regular users (e.g., HR) can't use the password file (orapw<sid>); they rely on database authentication (passwords stored in the DB) or external methods.
Mechanics:The password file stores hashed credentials for privileged users, checked during remote AS SYSDBA logins.
Why Incorrect:Extending this to "any user" ignores Oracle's security model limiting password file usage.
D . REMOTE_LOGIN_PASSWORDFILE must be set to EXCLUSIVE to permit password changes for system-privileged administrative users.
False. REMOTE_LOGIN_PASSWORDFILE=EXCLUSIVE allows a dedicated password file for one instance, enabling password changes via ALTER USER SYS IDENTIFIED BY newpass. However, SHARED mode also permits changes for SYS, though not for other users added to the file. The "must" overstates the requirement; it's sufficient, not necessary.
Mechanics:EXCLUSIVE locks the file to one DB, while SHARED allows multiple DBs to use it, with restrictions on non-SYS users.
E . Password File authentication must be used for system-privileged administrative users.
True. For remote administrative access (e.g., sqlplus sys/password@orcl as sysdba), a password file is mandatory when REMOTE_LOGIN_PASSWORDFILE is EXCLUSIVE or SHARED. Local OS authentication is an alternative, but for network-based admin tasks, the password file is required, making this statement true in that context.
Mechanics:Set via orapwd (e.g., orapwd file=orapworcl password=oracle entries=10), enabling remote SYSDBA logins.
Edge Case:If REMOTE_LOGIN_PASSWORDFILE=NONE, only OS auth works locally, but this isn't the default or typical setup.
NEW QUESTION # 38
You unplugged a PDB to plug it into another CDB with the following command: SQL> ALTER PLUGGABLE DATABASE pdb1 UNPLUG INTO '/tmp/pdb1.pdb'; Which statement is true prior to plugging the PDB into the other CDB?
- A. PDB archive file and only the user-defined tablespaces must be copied to the target CDB.
- B. The PDB manifest and all the datafiles must be copied to the target CDB.
- C. The PDB manifest, the data files, and the PDB archive file must be copied to the target CDB.
- D. The PDB archive file must be copied to the target CDB.
Answer: C
Explanation:
D .True. The .pdb file (archive) contains the manifest and data files; all must be copied to the target CDB for plugging.
A-C .False. The archive alone isn't enough; all components are needed.
NEW QUESTION # 39
Which statement is true about database links?
- A. Private database link creation requires the same user to exist in both the local and the remote databases.
- B. A public database link can be created only by SYS.
- C. A database link created in a database allows a connection from that database's instance to the target database's instance for selecting schema data.
- D. A public database link can be used by any user allowing remote database instance connection for selecting schema data.
- E. A database link can be created only between two Oracle databases.
Answer: C
Explanation:
A .False. Links can connect to non-Oracle DBs via gateways.
B .False. No such user requirement; authentication is separate.
C .False. Any user with CREATE PUBLIC DATABASE LINK can create one.
D .True. Links enable remote schema access (e.g., SELECT * FROM emp@remote).
E .False. Public links allow access, but privileges on remote objects are needed.
NEW QUESTION # 40
Which two statements are true about undo segments and the use of undo by transactions in an Oracle database instance?
- A. Undo segments can be stored in the SYSTEM tablespace.
- B. A single transaction may use multiple undo segments simultaneously.
- C. Undo segments can extend when a transaction fills the last extent of the undo segment.
- D. Undo segments can wrap around to the first extent when a transaction fills the last extent of the undo segment.
- E. Undo segments can be stored in the SYSAUX tablespace.
Answer: B,C
Explanation:
A .False. Undo is stored in a dedicated undo tablespace, not SYSTEM.
B .True. Large transactions can span multiple undo segments.
C .False. Undo isn't stored in SYSAUX.
D .True. Undo segments extend as needed, space permitting.
E .False. Undo doesn't "wrap"; new extents are allocated.
NEW QUESTION # 41
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