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NEW QUESTION 38
Which two are true about Oracle instance recovery? (Choose three.)

A. Recovery begins from the beginning of the CURRENT redo log group.B. Recovery begins from the last checkpoint position that was calculated by the Database Writer before instance failure.C. Recovery reads redo until the end of the redo thread, and then opens the database. SMON then rolls back any dead transactions.D. Recovery begins from the last checkpoint position that was recorded in the control file by the checkpoint process (CKPT).E. Recovery reads redo until the end of the redo thread. SMON rolls back any dead transactions, and then the datanase is opened.F. Recovery begins from the start of any ACTIVE redo log group or the start of the CURRENT log group if no other group is ACTIVE.

Answer: B,C,D

 

NEW QUESTION 39
Which two are true about Oracle Optimizer Statistics, their use, and their collection? (Choose two.)

A. Index balanced B*Tree height is considered when evaluating the cost of using an index.B. Statistics collected using DBMS_STATS always yield the best optimizer result.C. The Statistics Advisor can help recommend the best way to gather statistics.D. The Statistics Advisor generates actions for all recommendations.E. The number of table rows is considered when evaluating the cost of accessing a table using an index.

Answer: B,C

Explanation:
Explanation/Reference: https://docs.oracle.com/en/database/oracle/oracle-database/19/tgsql/optimizer-statistics- advisor.html#GUID-D81A7708-FDA0-45BB-A6E2-103858B047AE

 

NEW QUESTION 40
Which two are true about the Optimizer Statistics Advisor?

A. It runs automatically every night by default.B. It always analyzes all schemas in the database.C. It can recommend changes to improve the statistics gathering process.D. It can be run only automatically.E. It can be run only manually.

Answer: C,D

 

NEW QUESTION 41
Which two are true about the automatic execution of operating system scripts when performing silent mode installation starting from Oracle Database 19c? (Choose two.)

A. The installer will prompt for the root or sudo password.B. Silent install always runs operating scripts automatically.C. The response file can specify the path of the sudo program.D. The response file must contain the root or sudo password.E. The response file can specify the root or sudo password.

Answer: C,D

 

NEW QUESTION 42
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