Oracle 1z0-053 exam questions and answers

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1.You plan to have a larger moving window size for the default system-defined moving window baseline
because you want to use the adaptive threshold.
Which statement factors in this consideration while increasing the size of the moving window.?
A. The collection level for the AWR should be set to BASIC.
B. The moving window size must be less than Undo Retention.
C. The moving window size should be greater than the Automatic Workload Repository (AWR) retention
period.
D. The moving window size should be equal to or less than the Automatic Workload Repository (AWR)
retention period.
Answer:D

2.Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains
one redo member. When you attempt to start the database, you receive the following errors:
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: ‘D:\REDO01.LOG’
You discover that the online redo log file of the current redo group is corrupted.
Which statement should you use to resolve this issue?
A. ALTER DATABASE DROP LOGFILE GROUP 1;
B. ALTER DATABASE CLEAR LOGFILE GROUP 1;
C. ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1;
D. ALTER DATABASE DROP LOGFILE MEMBER ‘D:\REDO01.LOG’;
Answer:C

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