Java heap space error

Question

I get a Java heap space error while running spring batch, with ibatis.

The following is the stack trace.

     java.lang.OutOfMemoryError: Java heap space
at oracle.sql.converter.CharacterConverter1Byte.toOracleStringWithReplacement(CharacterConverter1Byte.java:531)
at oracle.sql.CharacterSetWithConverter.convertWithReplacement(CharacterSetWithConverter.java:200)
at oracle.jdbc.driver.DBConversion.javaCharsToCHARBytes(DBConversion.java:770)
at oracle.jdbc.driver.DBConversion.javaCharsToCHARBytes(DBConversion.java:711)
at oracle.jdbc.driver.T4C8TTIClob.write(T4C8TTIClob.java:384)
at oracle.jdbc.driver.T4CConnection.putChars(T4CConnection.java:2708)
at oracle.sql.CLOB.putChars(CLOB.java:408)
at oracle.jdbc.driver.OracleClobWriter.write(OracleClobWriter.java:111)
at java.io.Writer.write(Unknown Source)
at java.io.Writer.write(Unknown Source)
at org.springframework.util.FileCopyUtils.copy(FileCopyUtils.java:220)

Any idea what the sql converter is doing ?

It may simply need more memory. Increase the heap size (`-Xmx` flag), if not done already. — Andreas Dolk, Feb 14 '12 at 11:55
look at this http://stackoverflow.com/questions/3077154/ways-to-reduce-memory-churn — basav, Feb 14 '12 at 11:59

score 0 · Answer 1 · answered Feb 14 '12 at 12:06

0

Also, as you are using Oracle JDBC, make sure that you have use ResultSet.TYPE_FORWARD_ONLY for your result sets - Oracle uses "a client-side cache" if you use scrollable ResultSets. (http://docs.oracle.com/cd/B10500_01/java.920/a96654/resltset.htm)

answered Feb 14 '12 at 12:06

user964650

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Java heap space error

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