dbModel read resource does not implement Zend_Db_Adapter_Abstract in magento
I tried following to fix this.
1) Cleared all caches from the var/cache folder
2) Deleted all session from var/session folder
3) Given 777 file permission recursively to the entire application
4)Tried this solution also tutorial site link
5)Changed the DB setting in local.xml also
6) I have disables all local modules also using local.xml
I have tried solutions given on Google. Still the issue is not resolved.
How to fix this.