Require admin rights to change the log level.

h2/src/main/org/h2/command/dml/Set.java

@@ -200,8 +200,10 @@ public class Set extends Prepared {
             break;
         case SetTypes.LOG: {
             int value = getIntValue();
-            session.getUser().checkAdmin();
-            database.setLogMode(value);
+            if (database.isPersistent() && value != database.getLogMode()) {
+                session.getUser().checkAdmin();
+                database.setLogMode(value);
+            }
             break;
         }
         case SetTypes.MAX_LENGTH_INPLACE_LOB: {

h2/src/test/org/h2/test/db/TestRights.java

@@ -173,7 +173,7 @@ public class TestRights extends TestBase {
         executeSuccess("GRANT SELECT, INSERT, UPDATE ON TEST TO PASS_READER");
         conn.close();
 
-        conn = getConnection("rights", "PASS_READER", getPassword("abc"));
+        conn = getConnection("rights;LOG=2", "PASS_READER", getPassword("abc"));
         stat = conn.createStatement();
         executeSuccess("SELECT * FROM PASS_NAME");
         executeSuccess("SELECT * FROM (SELECT * FROM PASS_NAME)");
@@ -241,7 +241,7 @@ public class TestRights extends TestBase {
         } catch (SQLException e) {
             assertKnownException(e);
         }
-        conn = getConnection("rights", "TEST", getPassword("def"));
+        conn = getConnection("rights;LOG=2", "TEST", getPassword("def"));
         stat = conn.createStatement();
 
         executeError("SET DEFAULT_TABLE_TYPE MEMORY");