Hi Canddrababu,
In case you are using HANA on the HANA Cloud Platform (HCP), like Vlado commented, you don't have access to the OS, so can't use SDA. SDA requires to have the ODBC drivers to connect to databases to be installed and configured on the HANA Box itself, which is not possible for HCP.
However, we have a technical solution that will be made available next year (target Q1) on HCP.
SDI - Smart Data Integration - provides and architecture that works with cloud (as well as onPremise) for federation (SDA), replication and data integration. You will install a small agent onPremise, and on this agent you can install the required drivers to connect to the sources of your choice. The agent will communicate over HTTPS with the HANA server in the cloud and will give you access to the onPremise sources from within your HANA instance.
You can use this for virtual tables (SDA/federation), but also in replication tasks and flowgrahs if you want to physically move the data into the HANA instance.
So stay tuned till next year for this SDI feature to be made available on HCP.
Note: if your HANA instance is not on HCP, but hosted in your own AWS or Azure account, you should have full access to the OS and can configure the ODBC drivers without needing SDI.
Kind regards,
Ben Hofmans
SAP
Product Manager for HANA Cloud Integration and Smart Data Integration