According to the JDBC specification: 

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``++Blob++``, ``++Clob++``, and ``++NClob++`` Java objects remain valid for at least the duration of the transaction in which they are created. This could potentially result in an application running out of resources during a long running transaction.
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== Noncompliant Code Example

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PreparedStatement ps = conn.prepareStatement("SELECT text, img from photos where author=?");
ps.setString(1,author);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
  Image image = saveImg(rs.getBlob("img").getBinaryStream());  // Noncompliant; blob is never freed
  image.addCaption(rs.getClob("text").getCharacterStream());  // Noncompliant
}
----


== Compliant Solution

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PreparedStatement ps = conn.prepareStatement("SELECT text, img from photos where author=?");
ps.setString(1,author);
ResultSet rs = ps.executeQuery();
while (rs.next()) {
  Blob blob = rs.getBlob("img");
  Image image = saveImg(blob.getBinaryStream());
  blob.free();

  Clob clob = rs.getClob("text");
  image.addCaption(clob.getCharacterStream());
  clob.free();
}
----


