1Z0-183 무료 덤프문제 온라인 액세스

How does DBCA support database upgrades?

• A.By converting all non-CDBs to PDBs automatically
• B.By providing a guided interface for direct database version upgrades
• C.By skipping execution of post-upgrade scripts
• D.By disabling redo log archiving temporarily

Which two actions are required before unplugging a PDB for transport to another CDB?
(Choose two)

• A.Close the PDB and generate its XML metadata file
• B.Ensure the PDB is opened in READ WRITE mode
• C.Execute DBMS_PDB.CHECK_PLUG_COMPATIBILITY on the source CDB
• D.Run ALTER PLUGGABLE DATABASE DISCARD TEMPFILE to clean tempfiles

Which two actions help troubleshoot slow RMAN backups?
(Choose two)

• A.Reduce the number of channels to a single stream
• B.Disable block change tracking
• C.Check I/O bottlenecks on backup destinations
• D.Review RMAN backup compression settings

When transporting a database across platforms with different endian formats, what step is mandatory?

• A.Drop all user tablespaces before conversion
• B.Enable Data Guard before transport
• C.Disable redo log archiving during transport
• D.Convert the datafiles using RMAN CONVERT

What is the recommended approach for tuning the buffer cache size?

• A.Increase cache size until the library cache hit ratio exceeds 99%
• B.Increase DB_BLOCK_SIZE for better caching
• C.Disable automatic memory management and use manual tuning only
• D.Use Automatic Memory Management (AMM) or Automatic Shared Memory Management (ASMM) to let Oracle manage memory dynamically