Hi Karthik,
>>Did you have any guide for Installing SAP ECC 6.0 EHP7 IDES with MaxDB.
You can go through the below guides for installation part:
SAP Systems Based on the Application Server ABAP of SAP NetWeaver on UNIX: SAP MaxDB
https://websmp105.sap-ag.de/~sapidb/012002523100011883442014E
SAP Systems Based on the Application Server ABAP of SAP NetWeaver on Windows: SAP MaxDB
https://websmp105.sap-ag.de/~sapidb/011000358700000881512012E
thanks,
pavan