Pass the Oracle Database 19c 1z0-083 Questions and answers with ExamsMirror

Backups can be taken only if a fast recovery area is configured.

Backups can be written only to disk.

Backups can be taken only for data files.

Binary compression cannot be applied to the backup.

Backups can be written only if checksums are stored for each block.

Backups can be written only to media.

Flashback logs are written sequentially, and are archived.

Flashback Database uses a restored control file to recover a database.

The Oracle database automatically creates, deletes, and resides flashback logs in the Fast Recovery Area.

Flashback Database can recover a database to the state that it was in before a reset logs operation.

Flashback Database can recover a data file that was dropped during the span of time of the flashback.

Flashback logs are used to restore to the blocks' before images, and then the redo data may be used to roll forward to the desired flashback time.

Tablespaces always remain in read/write mode during transportable tablespace operations.

Tablespaces never remain in read/write mode during transportable tablespace operations.

A transportable data pump import can leave a plugged-in tablespace in read-only mode.

Simultaneous data pump jobs can be limited at the pluggable database (PDB) level.

A transportable data pump import can leave a plugged-in tablespace in read/write mode.

An ordinary data pump export of a table with encrypted columns will always encrypt the same columns when imported.

Run the SQL Access Advisor.

Run the Memory Advisor for the shared pool.

Run the SQL Tunning Advisor.

Run the Memory Advisor for the Program Global Area.

Run the Memory Advisor for the System Global Area.

to specify a default tablespace in a PDB cloned from another PDB in the same CDB

to exclude all tablespaces except SYSTEM, SYSAUX, and TEMP when plugging in a PDB

to include specific user tablespaces only when relocating a PDB

to specify the list of user tablespaces to include when moving a non-CDB to a PDB

to exclude a temp tablespace when plugging in a PDB

to specify the list of tablespaces to include when creating a PDB from the CDB seed

FLASHBACK DATABASE only uses FLASHBACK LOGS to get the database to the desired flashback time.

It requires that the target database be in ARCHIVELOG mode.

FLASHBACK LOGS are archived after a log switch.

A database can be flashed back using SQL*PLUS.

It always generates REDO and UNDO.

Queries and DML have the same FLASHBACK LOG overhead when flashback is enabled for a database.

If an RMAN BACKUP VALIDATE command takesroughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.

Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using synchronous I/O.

If an RMAN BACKUP VALIDATE command takes noticeably lessthan an actual backup, then write I/O is a likely bottleneck.

If an RMAN BACKUP VALIDATE command takesroughly the same time as an actual backup, then read I/O is a likely bottleneck.

Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.

Setting DBWR_IO_SLAVES to a non zero value can improve backup performance when using asynchronous I/O/

Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.

By default, the transported database will use Oracle Managed Files (OMF)

Data files can be converted on the destination system.

Data files can be converted on the source system.

A new DBID is automatically created for the transported database.

Databases can be transported between systems with different endian formats.

The password file is automatically converted by RMAN.

The Oracle Database time model should be used to find the database and instance areas most in need of tuning.

Tuning activities should stop once the user is satisfied with performance.

Tuning activities should stop once agreed service levels for performance have been met.

The database instance memory should always be tuned before tuning any file systems.

SQL statements should always be tuned before tuning any file systems.

The alert log should be used to find the database and instance areas most in need of tuning.

Tables or table partitions can be recovered by using an auxiliary instance only.

Tables or table partitions with a foreign key cannot be recovered.

Tables or table partitions can be recovered only when the database is in mount state.

Tables or table partitions from the system and sysaux tablespaces cannot be recovered.

Tables with not null constraints cannot be recovered.