Documentation.

h2/src/docsrc/html/advanced.html

@@ -468,6 +468,15 @@ To uninstall the service, double click on <code>5_uninstall_service.bat</code>.
 If successful, a command prompt window will pop up and disappear immediately. If not, a message will appear.
 </p>
 
+<h3>Additional JDBC drivers</h3>
+<p>
+To use other databases (for example MySQL), the location of the JDBC drivers of those databases need to be
+added to the environment variables <code>H2DRIVERS</code>  or <code>CLASSPATH</code> before
+installing the service. Multiple drivers can be set; each entry needs to be separated with a <code>;</code>
+(Windows) or <code>:</code>  (other operating systems). Spaces in the path names are supported. 
+The settings must not be quoted. 
+</p>
+
 <h2 id="odbc_driver">ODBC Driver</h2>
 <p>
 This database does not come with its own ODBC driver at this time,

h2/src/docsrc/html/changelog.html

@@ -23,6 +23,7 @@ Change Log
 </li><li>Memory mapped file system: improved error messages if there is a problem.
 </li><li>The Lucene fulltext search did not work well
     when using special file systems such as split or nioMapped.
+</li><li>The memory mapped file system (nioMapped: file prefix) couldn't seek past the file length.
 </li><li>Some file system operations did not work with stacked file systems
 	(for example split and nioMapped). This also affected the DeleteDbFiles tool.
 </li><li>New experimental query cache.

h2/src/docsrc/html/performance.html

@@ -354,17 +354,21 @@ if opening the database took more than a few seconds.
 <p>
 The <code>ConvertTraceFile</code> tool generates SQL statement statistics at the end of the SQL script file.
 The format used is similar to the profiling data generated when using <code>java -Xrunhprof</code>.
+For this to work, the trace level needs to be 2 or higher (<code>TRACE_LEVEL_FILE=2</code>).
+The easiest way to set the trace level is to append the setting to the database URL, for example:
+<code>jdbc:h2:~/test;TRACE_LEVEL_FILE=2</code> or <code>jdbc:h2:tcp://localhost/~/test;TRACE_LEVEL_FILE=2</code>.
 As an example, execute the the following script using the H2 Console:
 </p>
 <pre>
-SET TRACE_LEVEL_FILE 3;
+SET TRACE_LEVEL_FILE 2;
 DROP TABLE IF EXISTS TEST;
 CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR(255));
 @LOOP 1000 INSERT INTO TEST VALUES(?, ?);
 SET TRACE_LEVEL_FILE 0;
 </pre>
 <p>
-Now convert the <code>.trace.db</code> file using the <code>ConvertTraceFile</code> tool:
+After running the test case, convert the <code>.trace.db</code> file using the <code>ConvertTraceFile</code> tool.
+The trace file is located in the same directory as the database file.
 </p>
 <pre>
 java -cp h2*.jar org.h2.tools.ConvertTraceFile