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Oracle 1Z1-182 Exam Syllabus Topics:
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NEW QUESTION # 51
Which two SQL Plan Management Advisor tasks are part of Automatic Maintenance Tasks?
- A. The Automatic SQL Tuning Advisor tasks, which would examine the performance of high-load SQL statements and make recommendations for those statements.
- B. The Automatic SQL Plan Management Evolve Advisor task, which evolves plans that have recently been added as the SQL plan baseline for statements.
- C. The Automatic SQL Performance Analyzer task, which is used to provide details about impact of database changes to application SQL batch.
- D. The Automatic SQL Access Advisor task, which is used to manage an application SQL load.
- E. The Automatic Index Advisor task, which is used to create and maintain table indexes based on the DML load and operations.
Answer: A,B
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 # 52
Which two statements are true about the configuration and use of UNDO?
- A. UNDO_RETENTION specifies how long all types of UNDO are retained.
- B. UNDO_RETENTION specifies for how long Oracle attempts to keep expired and unconsumed UNDO.
- C. UNDO_RETENTION specifies for how long Oracle attempts to keep unexpired UNDO.
- D. Active UNDO is always retained.
- E. Unexpired UNDO is always retained.
Answer: C,D
Explanation:
A .True. Active (in-use) UNDO is never overwritten.
B .False. Unexpired UNDO can be reused if space is needed.
C .False. Applies to unexpired, not expired UNDO.
D .False. Only unexpired UNDO is targeted.
E .True. UNDO_RETENTION sets the retention goal for unexpired UNDO.
NEW QUESTION # 53
Which two statements are true about the tools used to configure Oracle Net Services?
- A. The lsnrctl utility requires a listener.ora file to exist before it is started.
- B. Oracle Net Manager can be used to centrally configure listeners on any database server target.
- C. The Oracle Net Configuration Assistant is only used when running the Oracle installer.
- D. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target.
- E. Oracle Net Manager can be used to locally configure naming methods on a database server.
Answer: D,E
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 # 54
Which four statements are true about the Oracle Server architecture?
- A. A person or program can have more than one session with an instance by logging in with the same user.
- B. The buffer cache and the redo log buffer are held in the large pool.
- C. A session represents the state of a user's login to an instance.
- D. Each server process or background process has their own Program Global Area (PGA).
- E. A connection represents the state of a user's login to an instance.
- F. A person or program can have more than one session with an instance by logging in with different users.
Answer: A,C,D,F
Explanation:
A .True. Multiple sessions with different users are possible.
B .False. Buffer cache and redo log buffer are in SGA, not large pool.
C .True. Session tracks login state.
D .True. Each process has its own PGA.
E .False. Connection is the network link; session is the state.
F .True. Same user can have multiple sessions (e.g., via different terminals).
NEW QUESTION # 55
You execute this command: [oracle@host01 ~]$ expdp system/oracle FULL=Y DUMPFILE=exp_db_full.dmp PARALLEL=4 LOGFILE=exp_db_full.log JOB_NAME=exp_db_full. During the export operation, you detach from the job by using CTRL+C and then execute this command: Export> STOP_JOB=IMMEDIATE. Are you sure you wish to stop the job ([yes]/no): yes. Which two statements are true about the job?
- A. You cannot monitor it.
- B. You can reattach to it and monitor it.
- C. It terminates.
- D. It continues to run in the background.
Answer: B,C
Explanation:
A .False. STOP_JOB=IMMEDIATE halts the job, not backgrounds it.
B .False. You can monitor before stopping or after restarting.
C .True. Before stopping, you can reattach with expdp attach=exp_db_full.
D .True. STOP_JOB=IMMEDIATE terminates the job instantly.
NEW QUESTION # 56
What is the result of the following command? ALTER PLUGGABLE DATABASE PDB1 DISCARD STATE;
- A. It is unnecessary if the PDB is in the process of being upgraded.
- B. PDB1 is reverted to its default properties, which includes not to automatically open after a CDB restart.
- C. PDB1 is reverted to its default properties, which includes automatic opening after a CDB restart.
- D. It should be used whenever PDB1 open mode needs to be changed.
Answer: B
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 # 57
Which statement is true about database links?
- A. A public database link can be created only by SYS.
- B. A database link created in a database allows a connection from that database's instance to the target database's instance, but not vice versa.
- C. Private database link creation requires the same user to exist in both the local and the remote databases.
- D. A public database link can be used by a user connected to the local database instance to connect to any schema in the remote database instance.
- E. A database link can be created only between two Oracle databases.
Answer: B
Explanation:
Database links enable cross-database queries in Oracle. Let's analyze each option with extensive detail:
A . A public database link can be created only by SYS.
False. Any user with the CREATE PUBLIC DATABASE LINK privilege (not just SYS) can create a public link (e.g., CREATE PUBLIC DATABASE LINK remote_db CONNECT TO scott IDENTIFIED BY tiger USING 'orcl'). While SYS typically has this privilege, it's not exclusive to SYS.
Mechanics:Privilege is granted via GRANT CREATE PUBLIC DATABASE LINK TO user;. Public links are accessible to all users in the local DB.
Why Incorrect:Overly restrictive; Oracle's security model allows delegation.
B . A database link can be created only between two Oracle databases.
False. Database links can connect to non-Oracle databases using Oracle Heterogeneous Services or gateways (e.g., ODBC or JDBC drivers), such as linking to SQL Server. Example: CREATE DATABASE LINK mssql_link USING 'hsodbc';.
Mechanics:Requires configuration of hs_ parameters in init.ora and a gateway listener.
Historical Note:Heterogeneous links were introduced in 8i, expanded in 23ai for cloud integration.
C . A database link created in a database allows a connection from that database's instance to the target database's instance, but not vice versa.
True. A database link is unidirectional; it enables queries from the local instance to the remote instance (e.g., SELECT * FROM emp@remote_db), but the remote instance can't use it to query back unless a separate link is created there.
Mechanics:Stored in DBA_DB_LINKS, the link defines a one-way connection via a TNS alias or connect string.
Practical Use:Ensures controlled access; bidirectional access requires explicit configuration.
Edge Case:Loops are prevented unless explicitly designed with mutual links.
D . A public database link can be used by a user connected to the local database instance to connect to any schema in the remote database instance.
False. Public links allow all local users to use them, but access to remote schemas depends on the link's credentials (e.g., CONNECT TO scott) and the user's remote privileges. "Any schema" overstates it; access is limited to what the link's user can see.
Why Incorrect:Misrepresents privilege scope; remote schema access isn't universal.
E . Private database link creation requires the same user to exist in both the local and the remote databases.
False. A private link (e.g., CREATE DATABASE LINK my_linkCONNECT TO scott IDENTIFIED BY tiger USING 'orcl') requires the remote user (scott) to exist, but the local creator (e.g., HR) need not match. The link is owned locally and authenticated remotely.
Mechanics:Only the CREATE DATABASE LINK privilege is needed locally.
NEW QUESTION # 58
You must create a tablespace of nonstandard block size in a new file system and plan to use this command: CREATE TABLESPACE ns_tbs DATAFILE '/u02/oracle/data/nstbs_f01.dbf' SIZE 100G BLOCKSIZE 32K; The standard block size is 8K, but other nonstandard block sizes will also be used. Which two are requirements for this command to succeed?
- A. DB_32K_CACHE_SIZE must be set to a value that can be accommodated in the SGA.
- B. The operating system must use a 32K block size.
- C. DB_32K_CACHE_SIZE should be set to a value greater than DB_CACHE_SIZE.
- D. The /u02 file system must have at least 100G space for the datafile.
- E. DB_32K_CACHE_SIZE must be less than DB_CACHE_SIZE.
Answer: A,D
Explanation:
A .False. No such restriction exists; DB_32K_CACHE_SIZE is independent of DB_CACHE_SIZE.
B .True. A nonstandard block size (32K) requires a corresponding cache (DB_32K_CACHE_SIZE) set to a non-zero value within SGA limits.
C .False. OS block size is irrelevant; Oracle manages its own block sizes.
D .False. No requirement for it to exceed DB_CACHE_SIZE.
E .True. The file system must have 100G available for the datafile.
NEW QUESTION # 59
You execute this command: CREATE SMALLFILE TABLESPACE sales DATAFILE '/u01/app/oracle/sales01.dbf' SIZE 5G SEGMENT SPACE MANAGEMENT AUTO; Which two statements are true about the SALES tablespace?
- A. It must be smaller than the smallest BIGFILE tablespace.
- B. It uses the database default block size.
- C. Free space is managed using freelists.
- D. It is a locally managed tablespace.
- E. Any data files added to the tablespace must have a size of 5 gigabytes.
Answer: B,D
Explanation:
A . Free space is managed using freelists.False. The SEGMENT SPACE MANAGEMENT AUTO clause specifies Automatic Segment Space Management (ASSM), which uses bitmaps to track free space, not freelists (used in Manual Segment Space Management).
B . It uses the database default block size.True. The BLOCKSIZE clause is not specified in the command, so the tablespace inherits the database's default block size (typically 8K unless altered via DB_BLOCK_SIZE).
C . It must be smaller than the smallest BIGFILE tablespace.False. There's no such restriction; SMALLFILE and BIGFILE tablespaces differ in structure (multiple vs. single data file), not mandated size relationships.
D . It is a locally managed tablespace.True. In Oracle 23ai, all tablespaces created without an explicit EXTENT MANAGEMENT DICTIONARY clause are locally managed by default, using extent allocation bitmaps in the data file headers.
E . Any data files added to the tablespace must have a size of 5 gigabytes.False. The initial data file is 5G, but additional data files can have different sizes when added using ALTER TABLESPACE ... ADD DATAFILE.
NEW QUESTION # 60
What services does the Automatic Workload Repository (AWR) provide for the database self-tuning functionality?
- A. Creates a new PDB with the original SID of the Non-CDB.
- B. Creates a new PDB by plugging in a previously unplugged Non-CDB.
- C. Enables the creation of a Non-CDB from a CDB.
- D. Simplifies the process of migrating Non-CDB databases to the cloud.
Answer: D
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 # 61
What memory structure caches the data dictionary providing access to all database user processes?
- A. The Java Pool
- B. The Shared Pool
- C. The Streams Pool
- D. The Large Pool
Answer: B
Explanation:
D .True. The Shared Pool caches data dictionary metadata (e.g., table definitions) in the Library Cache and Dictionary Cache, accessible to all processes. Others serve different purposes (e.g., Large Pool for backups).
NEW QUESTION # 62
Which statement is true about database links?
- A. A public database link can be created only by SYS.
- B. A public database link can be used by any user allowing remote database instance connection for selecting schema data.
- C. Private database link creation requires the same user to exist in both the local and the remote databases.
- D. 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.
- E. A database link can be created only between two Oracle databases.
Answer: D
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 # 63
Which three statements are true about using SQL*Plus?
- A. It must be downloaded from the Oracle Technology Network (OTN).
- B. It can run scripts passed to it by a shell script.
- C. It can run Recovery Manager (RMAN) commands.
- D. It has its own commands that are separate from any SQL statements.
- E. It has both command-line and graphical user interfaces (GUI).
- F. It can run scripts entered at the SQL prompt.
Answer: B,D,F
Explanation:
A .True. sqlplus @script.sql works from shell scripts.
B .False. RMAN uses its own client, not SQL*Plus.
C .False. Bundled with Oracle DB software.
D .False. Command-line only; no GUI in 23ai.
E .True. @script runs scripts interactively.
F .True. Commands like SHOW PARAMETER are unique.
NEW QUESTION # 64
Which three statements are true about the tools used to configure Oracle Net Services?
- A. The lsnrctl utility requires a listener.ora file to exist before it is started.
- B. Oracle Net Manager can be used to centrally configure listeners on any database server target.
- C. Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server.
- D. The Oracle Net Configuration Assistant is only used when running the Oracle installer.
- E. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target.
- F. Oracle Net Manager can be used to locally configure naming methods on a database server.
Answer: C,E,F
Explanation:
A .False. Net Manager is local, not centralized.
B .False. NetCA can run standalone.
C .True. EMCC manages service names centrally.
D .True. EMCC configures listeners on managed targets.
E .False. lsnrctl starts a default listener if no listener.ora exists.
F .True. Net Manager configures local tnsnames.ora.
NEW QUESTION # 65
In one of your databases, you create a user, HR, and then execute this command: GRANT CREATE SESSION TO hr WITH ADMIN OPTION; Which three actions can HR perform?
- A. Revoke the CREATE SESSION privilege from user HR.
- B. Execute DDL statements in the HR schema.
- C. Revoke the CREATE SESSION privilege from other users.
- D. Grant the CREATE SESSION privilege with ADMIN OPTION to other users.
- E. Log in to the database instance.
- F. Execute DML statements in the HR schema.
Answer: C,D,E
Explanation:
A .False. CREATE SESSION doesn't grant DML rights.
B .True. CREATE SESSION allows login.
C .True. WITH ADMIN OPTION allows revoking from others HR granted it to.
D .True. WITH ADMIN OPTION permits granting with the same option.
E .False. Users can't revoke their own privileges.
F .False. DDL requires additional privileges (e.g., CREATE TABLE).
NEW QUESTION # 66
You want to view the initialization parameter settings for only a specific PDB. Which of the following statements is true?
- A. From the CDB root, execute SELECT db_uniq_name, pdb_uid, name, value$ FROM pdb_spfiles;
- B. From the PDB, execute SELECT NAME, VALUE, ISPDB_MODIFIABLE FROM v$parameter;
- C. From the CDB root, execute SELECT NAME, VALUE, ISPDB_MODIFIABLE FROM v$parameter;
- D. From the PDB, execute SELECT db_uniq_name, pdb_uid, name, value$ FROM pdb_spfile$;
Answer: B
Explanation:
A .Incorrect syntax and view (pdb_spfile$ is not a valid view; PDB_SPFILE$ exists but lacks value$).
B .From CDB root, V$PARAMETER shows all parameters, not PDB-specific ones.
C .pdb_spfiles is not a valid view; PDB_SPFILE$ exists but requires scoping to a PDB.
D .True. From the PDB, V$PARAMETER shows parameters specific to that PDB, including inherited and PDB-modified values, with ISPDB_MODIFIABLE indicating alterability.
NEW QUESTION # 67
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