Problem of performance, dbf - 25%, index file - 47%

Hi all
We are facing performance issues,
When I checked in the awr report, sys$ users takes more events waiting as well as management control (reaggrangement) file
When I checked the total space filled the data file is filled only with 25% and the index file is filled with 47%.

My hypothesis is old index are still there and so this is the reason that is the cause of the performance problem, we need to drop and recreate the index which will increase performance.

is the conclusion above is correct or any error is in there.

Data file sizes are 30 GB, 20 GB index dbf

Thanks for the help
control file parallel write 27,601 1,410 51 149.0 System I/O
db file sequential read 55,402 253 5 26.7 User I/O
CPU time 77 8.1
db file scattered read 13,179 70 5 7.4 User I/O
ARCH wait on SENDREQ 99 61 614 6.4 Network 

It seems that your system a lot of IOs. Have you checked the section sql sorted by gets to check queries that if one part or most is to access the unnecessary data or using bad execution plans?

HTH
Aman...

PS: Please use the code tag for formatting your code. See the upper right part of the Faq link that explains how to use it.

Tags: Database

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