diff --git a/data/xml/queries.xml b/data/xml/queries.xml
index 0e42a664e..8a49d0f54 100644
--- a/data/xml/queries.xml
+++ b/data/xml/queries.xml
@@ -684,7 +684,8 @@
         <substring query="SUBSTR((%s),%d,%d)"/>
         <concatenate query="CONCAT(%s,%s)"/>
         <case query="SELECT (CASE WHEN (%s) THEN 1 ELSE 0 END)"/>
-        <hex query="RAWTOHEX(%s)"/>
+        <!-- NOTE: RAWTOHEX() doesn't accept non-binary values -->
+        <!-- <hex query="RAWTOHEX(%s)"/> -->
         <inference query="ASCII(SUBSTR((%s),%d,1))>%d"/>
         <banner query="DATABASE_VERSION()"/>
         <current_user query="CURRENT_USER"/>
@@ -692,7 +693,7 @@
         <hostname/>
         <table_comment/>
         <column_comment/>
-        <is_dba query="SELECT ADMIN FROM INFORMATION_SCHEMA.USERS WHERE NAME=CURRENT_USER"/>
+        <is_dba query="SELECT ADMIN FROM INFORMATION_SCHEMA.SYSTEM_USERS WHERE USER_NAME=CURRENT_USER"/>
         <check_udf/>
         <users>
             <!-- LIMIT is needed at start for v1.7 this gets mangled unless no-cast is used -->
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 259e69774..5a9a67744 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.4.2.28"
+VERSION = "1.4.2.29"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/lib/core/testing.py b/lib/core/testing.py
index 908b2a251..c6ab29635 100644
--- a/lib/core/testing.py
+++ b/lib/core/testing.py
@@ -143,11 +143,6 @@ def bedTest():
     """
 
     TESTS = (
-        # Firebird
-        ("-u 'http://testbed/firebird/get_int.php?id=1' --flush-session --technique=B --is-dba --threads=4 --dump --banner --sql-query=\"SELECT 'foobar'\"", ("banner: '2.5", "Table: USERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Payload: id=1 AND ", "possible DBMS: 'Firebird'", "the back-end DBMS is Firebird", "current user is DBA: True", ": 'foobar'")),
-        ("-u 'http://testbed/firebird/get_int.php?id=1' --flush-session --technique=U --is-dba --dump --banner --sql-query=\"SELECT 'foobar'\"", ("banner: '2.5", "Table: USERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Title: Generic UNION query (NULL) - 3 columns", "the back-end DBMS is Firebird", "appears to have 3 columns", "current user is DBA: True", ": 'foobar'")),
-        ("-u 'http://testbed/firebird/get_int.php?id=1' --flush-session --technique=U --hex --banner --current-user --search -C surname --answers='dump=n'", ("banner: '2.5", "current user: 'SYSDBA'", "[1 column]", "| SURNAME | VARCHAR |")),
-
         # Altibase
         ("-u 'http://testbed/altibase/get_int.php?id=1' --flush-session --technique=B --is-dba --threads=4 --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("x86_64-unknown-linux-gnu", "Database: SYS", "Table: TESTUSERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Payload: id=1 AND ", "back-end DBMS could be 'Altibase'", "the back-end DBMS is Altibase", "current user is DBA: True", ": 'foobar'")),
         ("-u 'http://testbed/altibase/get_int.php?id=1' --flush-session --technique=U --is-dba --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("x86_64-unknown-linux-gnu", "Database: SYS", "Table: TESTUSERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Title: Generic UNION query (NULL) - 3 columns", "the back-end DBMS is Altibase", "appears to have 3 columns", "current user is DBA: True", ": 'foobar'")),
@@ -168,6 +163,21 @@ def bedTest():
         ("-u 'http://testbed/drizzle/get_int.php?id=1' --flush-session --technique=U --is-dba --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("7.1.36-stable", "Drizzle fork", "Database: testdb", "Table: testusers", "5 entries", "id", "name", "surname", "luther", "blisset", "NULL", "Title: Generic UNION query (NULL) - 3 columns", "the back-end DBMS is MySQL", "appears to have 3 columns", "current user is DBA: True", ": 'foobar'")),
         ("-u 'http://testbed/drizzle/get_int.php?id=1' --flush-session --hex --banner --current-user --current-db --search -C surname --answers='dump=n'", ("Title: AND boolean-based blind", "Title: MySQL >= 5.0.12 AND time-based blind", "Title: Generic UNION query (NULL) - 3 columns", "7.1.36-stable", "current database: 'testdb'", "current user: 'root'", "[1 column]", "| surname | VARCHAR |")),
 
+        # Firebird
+        ("-u 'http://testbed/firebird/get_int.php?id=1' --flush-session --technique=B --is-dba --threads=4 --dump --banner --sql-query=\"SELECT 'foobar'\"", ("banner: '2.5", "Table: USERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Payload: id=1 AND ", "possible DBMS: 'Firebird'", "the back-end DBMS is Firebird", "current user is DBA: True", ": 'foobar'")),
+        ("-u 'http://testbed/firebird/get_int.php?id=1' --flush-session --technique=U --is-dba --dump --banner --sql-query=\"SELECT 'foobar'\"", ("banner: '2.5", "Table: USERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Title: Generic UNION query (NULL) - 3 columns", "the back-end DBMS is Firebird", "appears to have 3 columns", "current user is DBA: True", ": 'foobar'")),
+        ("-u 'http://testbed/firebird/get_int.php?id=1' --flush-session --technique=U --hex --banner --current-user --search -C surname --answers='dump=n'", ("banner: '2.5", "current user: 'SYSDBA'", "[1 column]", "| SURNAME | VARCHAR |")),
+
+        # H2
+        ("-u 'http://testbed/h2/get_int.php?id=1' --flush-session --technique=B --is-dba --threads=4 --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("1.4.192", "Database: PUBLIC", "Table: TESTUSERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Payload: id=1 AND ", "back-end DBMS could be 'H2'", "the back-end DBMS is H2", "current user is DBA: True", ": 'foobar'")),
+        ("-u 'http://testbed/h2/get_int.php?id=1' --flush-session --technique=U --is-dba --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("1.4.192", "Database: PUBLIC", "Table: TESTUSERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Title: Generic UNION query (NULL) - 3 columns", "the back-end DBMS is H2", "appears to have 3 columns", "current user is DBA: True", ": 'foobar'")),
+        ("-u 'http://testbed/h2/get_int.php?id=1' --flush-session --hex --banner --current-user --current-db --search -C surname --answers='dump=n'", ("Title: AND boolean-based blind", "Title: Generic inline queries", "Title: Generic UNION query (NULL) - 3 columns", "1.4.192", "current schema (equivalent to database on H2): 'PUBLIC'", "current user: 'SA'", "[1 column]", "| SURNAME | VARCHAR |")),
+
+        # HSQLDB
+        ("-u 'http://testbed/hsqldb/get_int.php?id=1' --flush-session --technique=B --is-dba --threads=4 --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("2.3.4", "Database: PUBLIC", "Table: TESTUSERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Payload: id=1 AND ", "it looks like the back-end DBMS is 'HSQLDB'", "the back-end DBMS is HSQLDB", "current user is DBA: True", ": 'foobar'")),
+        ("-u 'http://testbed/hsqldb/get_int.php?id=1' --flush-session --technique=U --is-dba --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("2.3.4", "Database: PUBLIC", "Table: TESTUSERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Title: Generic UNION query (NULL) - 3 columns", "the back-end DBMS is HSQLDB", "appears to have 3 columns", "current user is DBA: True", ": 'foobar'")),
+        ("-u 'http://testbed/hsqldb/get_int.php?id=1' --flush-session --hex --banner --current-user --current-db --search -C surname --answers='dump=n'", ("Title: AND boolean-based blind", "Title: HSQLDB > 2.0 AND time-based blind (heavy query)", "Title: Generic UNION query (NULL) - 3 columns", "2.3.4", "current schema (equivalent to database on HSQLDB): 'PUBLIC'", "current user: 'SA'", "[1 column]", "| SURNAME | VARCHAR |")),
+
         # IBM DB2
         ("-u 'http://testbed/db2/get_int.php?id=1' --flush-session --technique=B --is-dba --threads=4 --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("banner: 'DB2 v", "Database: DB2INST1", "Table: USERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Payload: id=1 AND ", "it looks like the back-end DBMS is 'IBM DB2'", "the back-end DBMS is IBM DB2", "current user is DBA: True", ": 'foobar'")),
         ("-u 'http://testbed/db2/get_int.php?id=1' --flush-session --technique=U --is-dba --dump -D CD --banner --sql-query=\"SELECT 'foobar'\"", ("banner: 'DB2 v", "Database: DB2INST1", "Table: USERS", "5 entries", "ID", "NAME", "SURNAME", "luther", "blisset", "NULL", "Title: Generic UNION query (NULL) - 3 columns", "the back-end DBMS is IBM DB2", "appears to have 3 columns", "current user is DBA: True", ": 'foobar'")),