diff --git a/htdocs/core/db/pgsql.class.php b/htdocs/core/db/pgsql.class.php
index a717afe0ec1..cf087ec072c 100644
--- a/htdocs/core/db/pgsql.class.php
+++ b/htdocs/core/db/pgsql.class.php
@@ -40,7 +40,7 @@ class DoliDBPgsql
     //! Database label
 	static $label='PostgreSQL';      // Label of manager
 	//! Charset
-	var $forcecharset='latin1';      // Can't be static as it may be forced with a dynamic value
+	var $forcecharset='UTF8';      // Can't be static as it may be forced with a dynamic value
 	//! Version min database
 	static $versionmin=array(8,4,0);	// Version min database
 
@@ -111,6 +111,7 @@ class DoliDBPgsql
 		// Essai connexion serveur
 		//print "$host, $user, $pass, $name, $port";
 		$this->db = $this->connect($host, $user, $pass, $name, $port);
+
 		if ($this->db)
 		{
 			$this->connected = 1;
@@ -374,12 +375,13 @@ class DoliDBPgsql
 		$name = str_replace(array("\\", "'"), array("\\\\", "\\'"), $name);
 		$port = str_replace(array("\\", "'"), array("\\\\", "\\'"), $port);
 
-		//if (! $name) $name="postgres";
+		if (! $name) $name="postgres";    // When try to connect using admin user
 
 		// try first Unix domain socket (local)
 		if (! $host || $host == "" || $host == "localhost" || $host == "127.0.0.1")
 		{
-			$con_string = "dbname='".$name."' user='".$login."' password='".$passwd."'";
+			$con_string = "dbname='".$name."' user='".$login."' password='".$passwd."'";    // $name may be empty
+			//print "$con_string";exit;
 			$this->db = pg_connect($con_string);
 		}
 
@@ -978,10 +980,15 @@ class DoliDBPgsql
 	 */
 	function DDLCreateDb($database,$charset='',$collation='',$owner='')
 	{
-		if (empty($charset))   $charset=$this->forcecharset;
+	    if (empty($charset))   $charset=$this->forcecharset;
 		if (empty($collation)) $collation=$this->forcecollate;
 
-		$ret=$this->query('CREATE DATABASE '.$database.' OWNER '.$owner.' ENCODING \''.$charset.'\'');
+		// Test charset match LC_TYPE (pgsql error otherwise)
+		//print $charset.' '.setlocale(LC_CTYPE,'0'); exit;
+
+		$sql='CREATE DATABASE '.$database.' OWNER '.$owner.' ENCODING \''.$charset.'\'';
+		dol_syslog($sql,LOG_DEBUG);
+		$ret=$this->query($sql);
 		return $ret;
 	}
 
diff --git a/htdocs/filefunc.inc.php b/htdocs/filefunc.inc.php
index 2e6f0bd1f8f..a80de78f44f 100755
--- a/htdocs/filefunc.inc.php
+++ b/htdocs/filefunc.inc.php
@@ -92,8 +92,8 @@ $dolibarr_main_document_root_alt=trim($dolibarr_main_document_root_alt);
 if (empty($dolibarr_main_db_port)) $dolibarr_main_db_port=0;		// Pour compatibilite avec anciennes configs, si non defini, on prend 'mysql'
 if (empty($dolibarr_main_db_type)) $dolibarr_main_db_type='mysql';	// Pour compatibilite avec anciennes configs, si non defini, on prend 'mysql'
 if (empty($dolibarr_main_db_prefix)) $dolibarr_main_db_prefix='llx_';
-if (empty($dolibarr_main_db_character_set)) $dolibarr_main_db_character_set='latin1';		// Old installation
-if (empty($dolibarr_main_db_collation)) $dolibarr_main_db_collation='latin1_swedish_ci';	// Old installation
+if (empty($dolibarr_main_db_character_set)) $dolibarr_main_db_character_set=($dolibarr_main_db_type=='mysql'?'latin1':'');		// Old installation
+if (empty($dolibarr_main_db_collation)) $dolibarr_main_db_collation=($dolibarr_main_db_type=='mysql'?'latin1_swedish_ci':'');	// Old installation
 if (empty($dolibarr_main_db_encryption)) $dolibarr_main_db_encryption=0;
 if (empty($dolibarr_main_db_cryptkey)) $dolibarr_main_db_cryptkey='';
 if (empty($dolibarr_main_limit_users)) $dolibarr_main_limit_users=0;
diff --git a/htdocs/install/etape1.php b/htdocs/install/etape1.php
index 8bdf0df1c27..9a20702124e 100644
--- a/htdocs/install/etape1.php
+++ b/htdocs/install/etape1.php
@@ -518,7 +518,8 @@ if (! $error && $db->connected && $action == "set")
         if (! $error && (isset($_POST["db_create_database"]) && $_POST["db_create_database"] == "on"))
         {
             dolibarr_install_syslog("etape1: Create database : ".$dolibarr_main_db_name, LOG_DEBUG);
-            $db=getDoliDBInstance($conf->db->type,$conf->db->host,$userroot,$passroot,'',$conf->db->port);
+            $newdb=getDoliDBInstance($conf->db->type,$conf->db->host,$userroot,$passroot,'',$conf->db->port);
+            //print 'eee'.$conf->db->type." ".$conf->db->host." ".$userroot." ".$passroot." ".$conf->db->port." ".$db->connected." ".$newdb->forcecharset;exit;
 
             if ($db->connected)
             {
@@ -545,6 +546,7 @@ if (! $error && $db->connected && $action == "set")
                     // Affiche aide diagnostique
                     print '<tr><td colspan="2"><br>';
                     print $langs->trans("ErrorFailedToCreateDatabase",$dolibarr_main_db_name).'<br>';
+                    print $db->lasterror().'<br>';
                     print $langs->trans("IfDatabaseExistsGoBackAndCheckCreate");
                     print '<br>';
                     print '</td></tr>';
@@ -575,7 +577,7 @@ if (! $error && $db->connected && $action == "set")
         }   // Fin si "creation database"
 
 
-        // We testOn test maintenant l'acces par le user base dolibarr
+        // We test access with dolibarr database user (not admin)
         if (! $error)
         {
             dolibarr_install_syslog("etape1: connexion de type=".$conf->db->type." sur host=".$conf->db->host." port=".$conf->db->port." user=".$conf->db->user." name=".$conf->db->name, LOG_DEBUG);
diff --git a/htdocs/install/inc.php b/htdocs/install/inc.php
index e3c5232bd8b..d231ccb3fd6 100644
--- a/htdocs/install/inc.php
+++ b/htdocs/install/inc.php
@@ -287,9 +287,9 @@ function conf($dolibarr_main_document_root)
 
     if (empty($character_set_client)) $character_set_client="UTF-8";
     $conf->file->character_set_client=strtoupper($character_set_client);
-    if (empty($dolibarr_main_db_character_set)) $dolibarr_main_db_character_set='latin1';		// Old installation
+    if (empty($dolibarr_main_db_character_set)) $dolibarr_main_db_character_set=($conf->db->type=='mysql'?'latin1':'');		// Old installation
     $conf->db->character_set=$dolibarr_main_db_character_set;
-    if (empty($dolibarr_main_db_collation)) $dolibarr_main_db_collation='latin1_swedish_ci';	// Old installation
+    if (empty($dolibarr_main_db_collation)) $dolibarr_main_db_collation=($conf->db->type=='mysql'?'latin1_swedish_ci':'');  // Old installation
     $conf->db->dolibarr_main_db_collation=$dolibarr_main_db_collation;
     if (empty($dolibarr_main_db_encryption)) $dolibarr_main_db_encryption=0;
     $conf->db->dolibarr_main_db_encryption = $dolibarr_main_db_encryption;
diff --git a/htdocs/support/inc.php b/htdocs/support/inc.php
index 222f5a807e2..1938c854e38 100644
--- a/htdocs/support/inc.php
+++ b/htdocs/support/inc.php
@@ -107,10 +107,18 @@ if (! isset($dolibarr_main_db_prefix) || ! $dolibarr_main_db_prefix) $dolibarr_m
 define('MAIN_DB_PREFIX',(isset($dolibarr_main_db_prefix)?$dolibarr_main_db_prefix:''));
 
 define('DOL_DATA_ROOT',(isset($dolibarr_main_data_root)?$dolibarr_main_data_root:''));
-if (empty($conf->file->character_set_client))      $conf->file->character_set_client=$charset;
-if (empty($conf->db->dolibarr_main_db_collation))  $conf->db->dolibarr_main_db_collation='latin1_swedish_ci';
-if (empty($conf->db->dolibarr_main_db_encryption)) $conf->db->dolibarr_main_db_encryption=0;
-if (empty($conf->db->dolibarr_main_db_cryptkey))   $conf->db->dolibarr_main_db_cryptkey='';
+
+if (empty($character_set_client)) $character_set_client="UTF-8";
+$conf->file->character_set_client=strtoupper($character_set_client);
+if (empty($dolibarr_main_db_character_set)) $dolibarr_main_db_character_set=($conf->db->type=='mysql'?'latin1':'');		// Old installation
+$conf->db->character_set=$dolibarr_main_db_character_set;
+if (empty($dolibarr_main_db_collation)) $dolibarr_main_db_collation=($conf->db->type=='mysql'?'latin1_swedish_ci':'');  // Old installation
+$conf->db->dolibarr_main_db_collation=$dolibarr_main_db_collation;
+if (empty($dolibarr_main_db_encryption)) $dolibarr_main_db_encryption=0;
+$conf->db->dolibarr_main_db_encryption = $dolibarr_main_db_encryption;
+if (empty($dolibarr_main_db_cryptkey)) $dolibarr_main_db_cryptkey='';
+$conf->db->dolibarr_main_db_cryptkey = $dolibarr_main_db_cryptkey;
+
 if (empty($conf->db->user)) $conf->db->user='';
 
 
@@ -151,7 +159,7 @@ function conf($dolibarr_main_document_root)
 	$conf->db->user = trim($dolibarr_main_db_user);
 	$conf->db->pass = trim($dolibarr_main_db_pass);
 
-	if (empty($conf->db->dolibarr_main_db_collation)) $conf->db->dolibarr_main_db_collation='latin1_swedish_ci';
+	if (empty($conf->db->dolibarr_main_db_collation)) $conf->db->dolibarr_main_db_collation='utf8_general_ci';
 
 	return 1;
 }