Row error occured while fetching data from database.

I am using 8.6 version and In our sql override there are couple of columns which are more than 4000 i.e string 4000 , we are taking a substruing and sending them as 1000 in sql override but still the data is getting rejected at source level. when i was going through the informatica potral i came across this infor will this help in resolving this issue... RR_4053 : Row error occurred while fetching data from database. This error occurs when no column value is greater than 4000 characters in this case. Cause This occurs when Informatica Integration Service is fetching an array.

Cause: This occurs when Informatica Integration Service is fetching an array.
Solution : Steps
1. In Administration Console , click on Integration Service
2. Expand Custom Properties
3. Add a property called OptimizeODBCRead with value No
4. Bounce Integration Service
5. With this flag the Integration Service uses the single row fetch instead of doing array fetch.