Oracle 1Z0-183 Certification Sample Questions and Answers

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Oracle 1Z0-183 Sample Questions:

01. On an Oracle Restart server, a DBA shuts down the database instance manually to perform maintenance. To their surprise, the instance stays down and Oracle Restart does not bring it back up, even though this same instance is normally restarted automatically after an unexpected crash.
Which explanation is correct?
a) Oracle Restart never automatically restarts a database instance under any circumstances, so the earlier automatic restarts must have been coincidental.
b) Oracle Restart automatically restarts a database instance only after a complete host reboot brings the whole stack back up, and never after any in-session shutdown of the instance during normal operation.
c) When a resource is stopped through the proper management interface, Oracle Restart treats it as an intentional shutdown and does not auto-restart it, unlike an unexpected failure.
d) A manually stopped instance is permanently deregistered from Oracle Restart and must be re-added before it can be started again.
 
02. Which diagnostic component periodically samples the state of currently active sessions and keeps that recent history in memory, enabling near-real-time analysis of what sessions were waiting on?
a) Active Session History, which samples active sessions at short intervals for session-level analysis.
b) Real-time SQL Monitoring, which tracks the execution of individual long-running statements.
c) The Automatic Database Diagnostic Monitor, which interprets AWR snapshots to produce prioritized tuning recommendations.
d) The Automatic Workload Repository, which aggregates statistics into snapshots at longer intervals.
 
03. After a container database restarts, a DBA finds that a pluggable database that was open before the restart comes back only in mounted state, forcing a manual open each time.
Which action makes the pluggable database return to its previous open mode automatically on future CDB restarts?
a) Place the PDB's data files into the Fast Recovery Area so the CDB reopens it in the same mode after a restart
b) Convert the PDB into a refreshable clone of itself
c) Save the PDB's open state so its mode is reinstated when the CDB restarts
d) Grant the administrative open privilege commonly to the PDB administrator
 
04. Users reported slowness during a nightly batch window that has since ended. The DBA wants an automatic diagnosis of that specific past period, including root causes and recommendations.
Which approach fits best?
a) Query Active Session History for the sessions active on the instance right now, since the slowdown was only just reported by users.
b) Launch real-time SQL Monitoring to observe the nightly batch job while its statements are still executing on the instance.
c) Create an AWR baseline over the batch window so the database automatically diagnoses the root causes for that period.
d) Run ADDM over the snapshot pair that bounds the batch window to obtain an automatic analysis of that period.
 
05. From the root of a CDB, a DBA wants to query the same application table across all open PDBs in a single result set, without connecting to each PDB individually.
Which two statements about using the cross-container query capability are correct?
(Choose two.)
a) Results can be gathered only by connecting to each PDB in turn
b) The cross-container query clause returns rows from the object in each PDB in one result
c) The object must be a data-linked application common object defined in the application root for this to work
d) A container-identifier column lets the DBA tell which PDB each returned row came from
e) The query automatically opens any PDBs that are currently closed
 
06. A CDB hosts several PDBs. A faulty batch job ran a few hours ago and logically corrupted data in SALESPDB. The DBA must return only that PDB to a time just before the job, while the other PDBs stay open and available.
Which statement correctly describes point-in-time recovery of the single PDB?
a) The PDB must first be unplugged, recovered as a standalone database, and then plugged back into the CDB at the target time.
b) Recovering the PDB to the earlier time requires taking the whole CDB back to that time, so every PDB returns to the earlier state.
c) Only Flashback Database can rewind the PDB to an earlier point, and because flashback logs are kept at the CDB level, every other PDB is necessarily rewound to that same time along with it.
d) RMAN can recover SALESPDB to the earlier target time while the other PDBs remain open, using an auxiliary instance it manages automatically.
 
07. In a CDB, a DBA must guarantee one PDB a minimum proportion of CPU when the system is busy, and separately cap a second PDB so it can never exceed a set fraction of CPU.
Which directive settings achieve both goals?
a) Set a utilization limit on the first PDB to guarantee its minimum share, and assign shares to the second PDB to cap its CPU.
b) Assign shares to give the first PDB its guaranteed minimum, and set a utilization limit to cap the second PDB.
c) Use shares on both PDBs, because utilization limits do not exist at the CDB level and cannot cap a PDB's CPU.
d) Lower the second PDB's SGA target to indirectly cap its CPU usage.
 
08. Two application components concurrently update the same document exposed through a JSON-relational duality view, and the DBA must explain how conflicting writes are handled without duplicating storage.
Which statement is accurate?
a) The document maps to relational rows, and a document version marker detects conflicting updates
b) The view keeps a separate JSON copy of each document that is periodically reconciled with the underlying relational tables
c) The last write silently wins, and there is no mechanism to detect that a conflicting update occurred
d) Concurrent document updates are always serialized by locking the entire duality view
 
09. An advanced DBA is applying a Release Update to an Oracle AI Database environment. The work involves two distinct tools: one that updates the software binaries in the Oracle home, and another that applies the corresponding changes inside the database itself.
Which tool applies the SQL changes to the data dictionary after the binary patch is installed?
a) Oracle Universal Installer
b) OPatch
c) datapatch
d) DBUA
 
10. To consolidate hardware, a DBA must move a PDB from one running CDB to another with only a very brief interruption. The DBA wants the source PDB to keep serving connections until the switchover, after which it is removed from the source CDB automatically.
Which operation provides this behavior?
a) Relocate the PDB: it serves sessions until switchover, then is dropped from the source
b) Unplug the PDB from the source, transfer its data files, and plug the manifest into the target CDB by hand
c) Take a snapshot copy on the target and close the source PDB
d) Create a refreshable clone on the target and leave the source in place

Answers:

Question: 01

Answer: c

Question: 02

Answer: a

Question: 03

Answer: c

Question: 04

Answer: d

Question: 05

Answer: b, d

Question: 06

Answer: d

Question: 07

Answer: b

Question: 08

Answer: a

Question: 09

Answer: c

Question: 10

Answer: a

 

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