eG Monitoring
 

Measures reported by OraDataFileActTest

The average read and write time of Oracle metric is the amount of time spent for each read and write against the datafile. By comparing read and write times across multiple datafiles will show you which datafiles are slower than others and you can identify the hot files among them.

Note :

The test should configure for run every 10 mins or more.

 The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Avg_read_time Indicates the average time taken to read each datafile. Secs Disk read times might be high due to the following reasons.

  • Executing inefficient queries for retrieving data; this could increase the frequency of full table scans and disk sorts, and can delay reading considerably ;
  • Frequent insert and update operations on datafiles could cause data fragmentation

Building efficient SQL queries can significantly increase the speed of your read operations. If fragmented data is the cause for the consistent slow-down in the read operations, then you might want to consider re-organizing the database objects to address this issue.
Avg_write_time Indicates the average time taken to write each datafile. Secs The value 1 for this measure indicates that the exchange search is enabled and value 0 indicates it is not enabled.