Re: Memory leak ?

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От Pierre Le Mouëllic
Тема Re: Memory leak ?
Дата
Msg-id 4D9C4789.5070406@xgs-france.com
обсуждение исходный текст
Ответ на Re: Memory leak ?  (Mikko Tiihonen <mikko.tiihonen@nitorcreations.com>)
Список pgsql-jdbc
Same problem with adding rs.close() :<br /><br /> sQLStatement.setInt(1, 2602);<br /> rs =
sQLStatement.executeQuery();<br/> rs.close();<br /><br /> sQLStatement.setInt(1, 2604);<br /> rs =
sQLStatement.executeQuery();<br/> rs.close();<br /><br /> sQLStatement.setInt(1, 2605);<br /> rs =
sQLStatement.executeQuery();<br/> rs.close();<br /><br /><div class="moz-signature"><font color="#000080" face="Arial"
size="2"><b>PierreLE MOUËLLIC<br /><br /></b></font><a href="mailto:pierre.lemouellic@xgs-france.com"
moz-do-not-send="true"><fontcolor="blue" size="1"><u></u></font></a></div><br /> Le 06/04/2011 12:30, Mikko Tiihonen a
écrit :<blockquote cite="mid:4D9C40BA.3080606@nitorcreations.com" type="cite">On 06/04/11 13:11, Pierre Le Mouëllic
wrote:<br /><blockquote type="cite">With this code : <br /><br /> public class TestJDBC { <br /><br />      private
staticTimer timer; <br /><br />      private static Connection connDB; <br />      private static PreparedStatement
sQLStatement;<br /><br />      public static void main(String[] args) throws SQLException, ClassNotFoundException { <br
/><br/>          connexion("jdbc:postgresql://praslin.qual.dc1:5432/G01DPM","postgres8","password");<br /><br />
        timer = new Timer(); <br />          timer.schedule(new local_task(), 1000L, 1000); <br />      } <br /><br />
    static class local_task extends TimerTask { <br /><br />          public void run() { <br />              ResultSet
rs=null;<br />              try { <br />                  sQLStatement.setInt(1, 2602); <br />                  rs =
sQLStatement.executeQuery();<br /></blockquote><br /> Missing <br /> rs.close(); <br /><br /><blockquote
type="cite">                sQLStatement.setInt(1, 2604); <br />                  rs = sQLStatement.executeQuery(); <br
/></blockquote><br/> Missing <br /> rs.close(); <br /><br /><blockquote type="cite">                
sQLStatement.setInt(1,2605); <br />                  rs = sQLStatement.executeQuery(); <br />              } catch
(SQLExceptione) { <br />              } <br />              finally{ <br /><br />                  try { <br />
                    if(rs!=null) <br />                          rs.close(); <br />                  } catch
(SQLExceptione) { <br />                  } <br /></blockquote> > <br /><blockquote type="cite">                
rollBack();<br />              } <br />          } <br />      } <br /><br />      public static void connexion(String
chemin,String user, String password) throws SQLException, ClassNotFoundException <br />      { <br />         
Class.forName("org.postgresql.Driver");<br />          String url = chemin+"?user="+user+"&password="+password; <br
/><br/>          //    Connexion <br />          connDB = DriverManager.getConnection(url); <br />         
connDB.setAutoCommit(false);<br />          initPreparedStatement(); <br />      } <br /><br />      private static
voidinitPreparedStatement() throws SQLException <br />      { <br />          sQLStatement =
connDB.prepareStatement("selectf_transite(?,'FPL','225',9,'test','','')"); <br />      } <br /><br />      public
staticvoid rollBack() <br />      { <br /></blockquote> > <br /><blockquote type="cite">         try <br />         
{<br />              connDB.rollback(); <br />          } <br />          catch(SQLException ex) <br />          { <br
/>         } <br />      } <br /> } <br /><br /> In eclipse Helios profiler, Jdbc3ResultSet live instances increase
(andnever decrease). Same thing with <br /> org.postgresql.core.v3.QueryExecutorImpl$ErrorTrackingResultHandler and
org.postgresql.core.v3.QueryExecutorImpl$1classes. <br /><br /> f_transite stored procedure make some select, insert
andupdate. If you need more explanation, i can give it to you. <br /><br /> Java 6 <br /> postgresql-9.0-801.jdbc3.jar
<br/> PostgreSQL 8.2.5 on powerpc-apple-darwin8.8.0, compiled by GCC powerpc-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple
Computer,Inc. build 5363) <br /><br /> Is it a memory leak ? Or my java code is wrong ? <br /><br /> *Pierre LE
MOUËLLIC<br /> * <br /> _pierre.lemouellic@xgs-france.com_ <a class="moz-txt-link-rfc2396E"
href="mailto:pierre.lemouellic@xgs-france.com"><mailto:pierre.lemouellic@xgs-france.com></a><br/> __ <a
class="moz-txt-link-rfc2396E"
href="mailto:pierre.lemouellic@xgs-france.com"><mailto:pierre.lemouellic@xgs-france.com></a><br/></blockquote><br
/><br/></blockquote> 

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