java.lang.OutOfMemoryError: Java heap space

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java.lang.OutOfMemoryError: Java heap space
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:165)
at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:48)
at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:938)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1150)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:4798)
at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:4901)
at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:5631)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.execute(OraclePreparedStatementWrapper.java:1385)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at oracle.ucp.jdbc.proxy.StatementProxyFactory.invoke(StatementProxyFactory.java:353)
at oracle.ucp.jdbc.proxy.PreparedStatementProxyFactory.invoke(PreparedStatementProxyFactory.java:178)
at oracle.ucp.jdbc.proxy.CallableStatementProxyFactory.invoke(CallableStatementProxyFactory.java:136)
at com.sun.proxy.$Proxy35.execute(Unknown Source)
at oracle.dbtools.apex.OWA.execute(OWA.java:152)
at oracle.dbtools.apex.ModApex.handleRequest(ModApex.java:254)
at oracle.dbtools.apex.ModApex.doPost(ModApex.java:180)
at oracle.dbtools.apex.ModApex.service(ModApex.java:90)
at oracle.dbtools.http.entrypoint.Dispatcher.dispatch(Dispatcher.java:106)
at oracle.dbtools.http.entrypoint.EntryPoint$FilteredServlet.service(EntryPoint.java:123)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:73)
at oracle.dbtools.http.forwarding.QueryFilteringRewrite.doFilter(QueryFilteringRewrite.java:89)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.forwarding.ForwardingFilter.doFilter(ForwardingFilter.java:59)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)
at oracle.dbtools.http.cors.CORSPreflightFilter.doFilter(CORSPreflightFilter.java:67)
at oracle.dbtools.http.filters.HttpFilter.doFilter(HttpFilter.java:45)
at oracle.dbtools.http.filters.FilterChainImpl.doFilter(FilterChainImpl.java:64)

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