Privileges Required to use Reports 
To use reports, you need either:
scheduler-administrator role
system, partition or isolation goup-level permissions
object-specific prvileges
Creating Reports
You need one of the following privilege ranks to be able to create reports:
Create - allows you to create reports on the level the privilege was granted (system, partition, isolation-group), you have no further privileges through this rank, you automatically get privileges on reports you create.
Edit - allows you to create, view, and edit all reports on the level the privilege was granted (system, partition, isolation-group)
Delete - allows you to create, view, and delete all reports on the level the privilege was granted (system, partition, isolation-group)
All - full control over all reports on the level the privilege was granted (system, partition, isolation-group)
Editing Reports
To successfully edit a report, you have to have one the following privileges:
Edit - privilege rank on the report, or on reports in its partition, isolation group or system-wide
Delete - privilege rank on the report, or on reports in its partition, isolation group or system-wide
All - privilege rank on the report, or on reports in its partition, isolation group or system-wide
Reports can reference the following objects, you need at least View privileges on these objects when you want to edit a report that references them:
Application