diff --git a/ext/pdo_dblib/dblib_driver.c b/ext/pdo_dblib/dblib_driver.c
index efc8dc1..c75c698 100644
--- a/ext/pdo_dblib/dblib_driver.c
+++ b/ext/pdo_dblib/dblib_driver.c
@@ -375,6 +375,8 @@ static int pdo_dblib_handle_factory(pdo_dbh_t *dbh, zval *driver_options)
 		,{ "dbname",	NULL,	0 }
 		,{ "secure",	NULL,	0 } /* DBSETLSECURE */
 		,{ "version",	NULL,	0 } /* DBSETLVERSION */
+		,{ "user",      NULL,   0 }
+		,{ "password",  NULL,   0 }
 	};

 	nvars = sizeof(vars)/sizeof(vars[0]);
@@ -432,12 +434,20 @@ static int pdo_dblib_handle_factory(pdo_dbh_t *dbh, zval *driver_options)
 		}
 	}

+	if (!dbh->username && vars[6].optval) {
+		dbh->username = vars[6].optval;
+	}
+
 	if (dbh->username) {
 		if(FAIL == DBSETLUSER(H->login, dbh->username)) {
 			goto cleanup;
 		}
 	}

+	if (!dbh->password && vars[7].optval) {
+		dbh->password = vars[7].optval;
+	}
+
 	if (dbh->password) {
 		if(FAIL == DBSETLPWD(H->login, dbh->password)) {
 			goto cleanup;
diff --git a/ext/pdo_firebird/firebird_driver.c b/ext/pdo_firebird/firebird_driver.c
index 83203d7..d3ff9b3 100644
--- a/ext/pdo_firebird/firebird_driver.c
+++ b/ext/pdo_firebird/firebird_driver.c
@@ -617,14 +617,24 @@ static int pdo_firebird_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /*
 	struct pdo_data_src_parser vars[] = {
 		{ "dbname", NULL, 0 },
 		{ "charset",  NULL,	0 },
-		{ "role", NULL,	0 }
+		{ "role", NULL,	0 },
+		{ "user", NULL, 0 },
+		{ "password", NULL, 0 }
 	};
 	int i, ret = 0;
 	short buf_len = 256, dpb_len;

 	pdo_firebird_db_handle *H = dbh->driver_data = pecalloc(1,sizeof(*H),dbh->is_persistent);

-	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 3);
+	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 5);
+
+	if (!dbh->username && vars[3].optval) {
+		dbh->username = vars[3].optval;
+	}
+
+	if (!dbh->password && vars[4].optval) {
+		dbh->password = vars[4].optval;
+	}

 	do {
 		static char const dpb_flags[] = {
diff --git a/ext/pdo_oci/oci_driver.c b/ext/pdo_oci/oci_driver.c
index 60205a8..904fdbe 100644
--- a/ext/pdo_oci/oci_driver.c
+++ b/ext/pdo_oci/oci_driver.c
@@ -591,10 +591,12 @@ static int pdo_oci_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{{ *
 	int i, ret = 0;
 	struct pdo_data_src_parser vars[] = {
 		{ "charset",  NULL,	0 },
-		{ "dbname",   "",	0 }
+		{ "dbname",   "",	0 },
+		{ "user",     NULL, 0 },
+		{ "password", NULL, 0 }
 	};

-	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 2);
+	php_pdo_parse_data_source(dbh->data_source, dbh->data_source_len, vars, 4);

 	H = pecalloc(1, sizeof(*H), dbh->is_persistent);
 	dbh->driver_data = H;
@@ -658,6 +660,10 @@ static int pdo_oci_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{{ *
 	}

 	/* username */
+	if (!dbh->username && vars[2].optval) {
+		dbh->username = vars[2].optval;
+	}
+
 	if (dbh->username) {
 		H->last_err = OCIAttrSet(H->session, OCI_HTYPE_SESSION,
 			   	dbh->username, (ub4) strlen(dbh->username),
@@ -669,6 +675,10 @@ static int pdo_oci_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{{ *
 	}

 	/* password */
+	if (!dbh->password && vars[3].optval) {
+		dbh->password = vars[3].optval;
+	}
+
 	if (dbh->password) {
 		H->last_err = OCIAttrSet(H->session, OCI_HTYPE_SESSION,
 			   	dbh->password, (ub4) strlen(dbh->password),