Steps to find Object Fragmentation and Chained Rows in a Database is:
1) Login to OEM and Click on Targets tab and Choose Database sub tab.
2) Click on required database and follow the path under Space summary >Segment findings.
3) Click Configure tab on right side. Provide Reclaimable space(%) ,Reclaimable Space(MB), Row Chaining (%) and Click on add button and select Tablespaces to be checked for row chaining.
For Row Chaining, the navigation path is
Reports->Storage->Oracle Database Space Issues->Segments with Row Chaining Issues
For Objects Fragmentation, the navigation path is
Reports->Storage->Oracle Database Space Issues->Tablespaces with Reclaimable Space
