Java Heap Memory error

Question

I am getting this error:

Exception in thread \"main\" java.lang.OutOfMemoryError: Java heap space
    at com.mysql.jdbc.MysqlIO.nextRowFast(MysqlIO.java:1585         


        

Answer 1

I discovered that the MySql driver has a memory leak. I use it with tomcat in a connection pool setup. Loads of JDBCResultSet and StatementImpl objects are in the heap. Setting the maxAge in the datasource configuration (context.xml) in tomcat helped.