Our application loads data from an avro file into in memory h2 database using java spring boot. I have a 145000000 rows to insert and I'm getting java heap error. it works fine with 2 million rows. How can I fix this issue?
Error pasted below Caused by: org.h2.jdbc.JdbcSQLNonTransientConnectionException: Out of memory.; SQL statement: at org.h2.message.DbException.getJdbcSQLException(DbException.java:617) ~[h2-1.4.199.jar:1.4.199] at org.h2.message.DbException.getJdbcSQLException(DbException.java:427) ~[h2-1.4.199.jar:1.4.199] at org.h2.message.DbException.get(DbException.java:194) ~[h2-1.4.199.jar:1.4.199] at org.h2.message.DbException.convert(DbException.java:341) ~[h2-1.4.199.jar:1.4.199] at org.h2.command.Command.executeUpdate(Command.java:278) ~[h2-1.4.199.jar:1.4.199] at org.h2.jdbc.JdbcStatement.executeInternal(JdbcStatement.java:233) ~[h2-1.4.199.jar:1.4.199] at org.h2.jdbc.JdbcStatement.execute(JdbcStatement.java:205) ~[h2-1.4.199.jar:1.4.199] at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:95) ~[HikariCP-3.2.0.jar:na] at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java) ~[HikariCP-3.2.0.jar:na] at org.springframework.jdbc.datasource.init.ScriptUtils.executeSqlScript(ScriptUtils.java:488) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE] ... 86 common frames omitted Caused by: java.lang.OutOfMemoryError: Java heap space
You're trying to load 145M rows into memory. So you obviously need to give the JVM more memory to handle that amount of storage.
Look into adding/changing your -Xmx JVM parameter to allocate more memory. See here for more info: