Unformatted text preview: and direct path loading with archiving using
B: There is no direct load UPDATE to NOLOGGING mode in Oracle.
E: There is no NOLOGGING initialization parameter in Oracle.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 873-876.
Chapter 18: Tuning Memory and Operating System Use
The alert log file for a database instance indicates that the checkpoints are frequently
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failing to complete. Which action would be a remedy in this situation?
A. Increase the number of archiver (ARCn) processes.
B. Increasing the number of members for
all log groups.
C. Increasing the number of log writer (LGWR) processes.
D. Increasing the number of database writer DBWn) processes.
It's possible that sometimes the LGWR process must wait because DBWn has not compressed
checkpointing a file. To avoid this situation you need to increase the number of database writer
A: You may also find that contention exists between your ARCH and LGWR processes during
checkpoints at log switches. To resolve this performance problem, you must do the following.
Place your redo log files on separate disk resources so that ARCH can copy the recently filled
online log to the archive destination. Also, place your archive destination on yet another separate
disk resource, away from all the online redo logs. But question says nothing about log switches,
so you can consider this answer as incorrect, because other answer is correct.
B: The number of members for all log groups has no influence on the frequency of checkpoints.
C: By increasing the number of log writer (LGWR) processes you will not fix problem, because
it is related with database writer processes: they don't have enough time to write all dirty buffers
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 902.
Chapter 19: Tuning Disk utilization
What are fr...
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- Fall '09
- Oracle Database, Jason S. Couchman, DBA Certification Exam, Certification Exam Guide