Oracle Database Discussions

So we currently have a production problem and I'm not so in the know as a lowly java developer and not an Oracle expert.
We keep getting this error(below) when a certain heavy query hits the DB.
Our DBA claims that the tablespace for 'TABLE_SPACE_NAME_HERE' is 20GB of space and that the problem is the query.
The query has been running fine for many many months but all of a sudden is presenting a problem and we have to do something quick.
We tried bouncing the application server but the error came right back when the big select query gets hit.
Any thoughts? Help! : )

java.sql.SQLException: ORA-01652: unable to extend temp segment by 128 in tablespace TABLE_SPACE_NAME_HERE

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:754)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:219)
at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:972)
at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1074)
at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:854)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1156)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3415)
at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3460)
at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:296)