save memory

h2/src/main/org/h2/message/TraceSystem.java

@@ -303,7 +303,7 @@ public class TraceSystem implements TraceWriter {
                     // can't be opened
                     return false;
                 }
-                fileWriter = IOUtils.getWriter(FileUtils.openFileOutputStream(fileName, true));
+                fileWriter = IOUtils.getUnbufferedWriter(FileUtils.openFileOutputStream(fileName, true));
                 printWriter = new PrintWriter(fileWriter, true);
             } catch (Exception e) {
                 logWritingError(e);

h2/src/main/org/h2/util/IOUtils.java

@@ -355,8 +355,8 @@ public class IOUtils {
     }
     
     /**
-     * Create a writer to write to an output stream using the UTF-8 format. If
-     * the output stream is null, this method returns null.
+     * Create a buffered writer to write to an output stream using the UTF-8
+     * format. If the output stream is null, this method returns null.
      * 
      * @param out the output stream or null
      * @return the writer
@@ -369,6 +369,21 @@ public class IOUtils {
         }
     }    
     
+    /**
+     * Create an unbuffered writer to write to an output stream using the UTF-8
+     * format. If the output stream is null, this method returns null.
+     * 
+     * @param out the output stream or null
+     * @return the writer
+     */
+    public static Writer getUnbufferedWriter(OutputStream out) throws SQLException {
+        try {
+            return out == null ? null : new OutputStreamWriter(out, Constants.UTF8);
+        } catch (UnsupportedEncodingException e) {
+            throw Message.convert(e);
+        }
+    }        
+
     /**
      * Create an input stream to read from a string. The string is converted to
      * a byte array using UTF-8 encoding.