title: What is the default username and password for h2 when there's nothing explicit in JDBC?
body: <p>From a program, I created a H2 database without specifying any user or password in the JDBC URL.</p>
  
  <p>Now I'm trying to access that database with the Script tool. The doc says to use <code>-user sa</code> in  the default case. That doesn't work, and it still doesn't work if I either add <code>-password sa</code> or remove <code>-user</code>. What am I missing?</p>
  
  <pre><code>/opt/h2/bin java -cp h2-1.3.161.jar org.h2.tools.Script -url jdbc:h2:/data/jug/jas-coref.h2 -user sa -password sa -script /data/jug/ris-start.sql
  Exception in thread "main" org.h2.jdbc.JdbcSQLException: Wrong user name or password [28000-161]
  at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
  at org.h2.message.DbException.get(DbException.java:169)
  at org.h2.message.DbException.get(DbException.java:146)
  at org.h2.message.DbException.get(DbException.java:135)
  at org.h2.engine.Engine.validateUserAndPassword(Engine.java:301)
  at org.h2.engine.Engine.createSessionAndValidate(Engine.java:146)
  at org.h2.engine.Engine.createSession(Engine.java:121)
  at org.h2.engine.Engine.createSession(Engine.java:28)
  at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:285)
  at org.h2.jdbc.JdbcConnection.&lt;init&gt;(JdbcConnection.java:110)
  at org.h2.jdbc.JdbcConnection.&lt;init&gt;(JdbcConnection.java:94)
  at org.h2.Driver.connect(Driver.java:72)
  at java.sql.DriverManager.getConnection(DriverManager.java:582)
  at java.sql.DriverManager.getConnection(DriverManager.java:185)
  at org.h2.tools.Script.execute(Script.java:152)
  at org.h2.tools.Script.execute(Script.java:133)
  at org.h2.tools.Script.runTool(Script.java:101)
  at org.h2.tools.Script.main(Script.java:51)
  </code></pre>