How to increase Heap size of JVM [duplicate]

Question

I am getting the following error:

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space         at SQLite.Vm.step(Native Method)         at SQLite.Database.get_table(Database.java:314)         at SQLite.JDBC2z.JDBCStatement.executeQuery(JDBCStatement.java:120)         at SQLite.JDBC2z.JDBCStatement.executeQuery(JDBCStatement.java:168)         at TestData.readData(TestData.java:21)         at TestData.main(TestData.java:41) 

Answer 1

Following are few options available to change Heap Size.

-Xms<size>        set initial Java heap size -Xmx<size>        set maximum Java heap size -Xss<size>        set java thread stack size 

java -Xmx256m TestData.java 

Answer 2

Java command line parameters

-Xms: initial heap size -Xmx: Maximum heap size 

if you are using Tomcat. Update CATALINA_OPTS environment variable

export CATALINA_OPTS=-Xms16m -Xmx256m;