Repositories going to Inactive State frequently

Hi SCN Members,

We have an issue with the repositories in SAP BODS 4.2. We have installed the Server version and created repositories (both central and local) and added them in CMC as well. All the repositories are given all the required privileges. But every few days the repositories go to an inactive state in CMC.

And also, in the DSMC, the repositories have a warning symbol next to them and the following message is displayed in the status tab:
Repository <repo-name> : Invalid repository (BODI-3015004)

Once we change the host entry in CMC from IP to Hostname or vice versa for that particular repository then it will switch to active state.

Does anyone have any idea about why this might be occuring and if there is any fix for this occurrence.

Thanks,

Jasmine.