In a generic value report tuning is to give a final touch 
to the report before putting it to production server.

Are you asking Business Objects reports tuning, if "Yes" 
then, the answer is 

- By reducing the number of variables
- By reducing the number of Data providers
- By pulling the exact amount of the data from the database
- By reducing the complex variables
- Do not check the "Refresh on open " report.

these are the some of the possible ways of tuning the 
reports.

1) 
BO 5.1.2 had no Infoview.
BO 6.5.1 included Infoview, but no Crystal Report, CMC not 
present, instead Supervisor(thick client) was used for 
giving Users rights.
BO XI includes intgration with Crystal Reports, CMC (THin 
Client) for managing Users, security and Profiles
2)
Oracle 9i includes Bulk Inserts
Index Rename and Table Rename.

3) SQL is a 4 GL(Generation Language)
Pl/SQL is a 3 GL

5) Prompts are used for asking the user for Dynamic Inputs 
while refreshing the Report.

9) Yes we can create reports without creating Universe.

4) Broad cast agent is used schedule the reports through web
intellienges

8) ad-hoc reports means with in the orgainsation user can
create reports by directly interact with IT peoples. That is
time  depended reports not detailed reports

5)prompt is an enduser object,which allows the valus or 
entering the values to restrict the data displayed in 
document.
4)Broad cast agent is refresh data and schedule the data in 
report level.
6)master detail format means section,section means 
eliminate tha duplicates and display data in seperate block 
in the form of master detail relationship.
7)you can reduce the calculation and conditions in the 
report 
2) you can limit the cut copy phaste operations for user's
3) you can limit access no of report's at peek time you can 
improve performence at report level

in model:

1)you can remove loop's at that time you can improve 
performence at model level
2)use indexces you can improve performence

they r four
1.hidden
2.disable
3.inhernt
4.enable

Security Levels in BO XI are:
1) Predefined
2) Advanced

Predifined:
1) No Access
2) View
3) Schedule
4) View on Demand
5) Full control

With Advanced you can explicitly define the security level.

yes. The businessobjects separately provided the option of 
get the report data from universe or others(personal data 
option)in the business objects entered wizard. Click or 
Select the others option and it will let u different files 
or extension files. here select .xls file and follow normal 
report style.

Yes, When u get the output of report then use save as .XLS 
 option.

in bo xi we can not generate report on personal file .data
source must be universe.but we can save the report as xl
by selecting save as option.

s sure,when we save the perticular report we have a option 
to save in .XLs

Yes, We can take a report on excel in Business Objects,

Process ....

In Desktop Intelligence -> File -> New - Generate a 
standard report -> Begin -> Other -> Personal Data Files -> 
Finish -> format -> xls & select excel file from browse 
option -> If excel file first row contains column name then 
select the check box -> First row contains column names -> 
Run.

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If you want to save a BO report in excel format then, 

After generating a report file -> save -> File name -
> .......  &  save as type -> xls -> Save