diff --git a/php/src/db/CapacitorStorage.php b/php/src/db/CapacitorStorage.php
index dbc7f87..4c399c4 100644
--- a/php/src/db/CapacitorStorage.php
+++ b/php/src/db/CapacitorStorage.php
@@ -17,7 +17,7 @@ abstract class CapacitorStorage {
   abstract function db(): IDatabase;
 
   function ensureLive(): self {
-    $this->db()->ensure();
+    $this->db()->ensureLive();
     return $this;
   }
 
diff --git a/php/src/db/IDatabase.php b/php/src/db/IDatabase.php
index 32a0013..5ca2e54 100644
--- a/php/src/db/IDatabase.php
+++ b/php/src/db/IDatabase.php
@@ -17,7 +17,7 @@ interface IDatabase extends ITransactor {
    * transactions en cours sont perdues. cette méthode est donc prévue pour
    * vérifier la validité de la connexion avant de lancer une transaction
    */
-  function ensure(): self;
+  function ensureLive(): self;
 
   /**
    * - si c'est un insert, retourner l'identifiant autogénéré de la ligne
diff --git a/php/src/db/pdo/Pdo.php b/php/src/db/pdo/Pdo.php
index 10da1c6..500d385 100644
--- a/php/src/db/pdo/Pdo.php
+++ b/php/src/db/pdo/Pdo.php
@@ -28,6 +28,7 @@ class Pdo implements IDatabase {
         "options" => $pdo->options,
         "config" => $pdo->config,
         "migration" => $pdo->migration,
+        "autocheck" => $pdo->autocheck,
       ], $params));
     } else {
       return new static($pdo, $params);
@@ -52,6 +53,10 @@ class Pdo implements IDatabase {
 
   protected const MIGRATION = null;
 
+  protected const AUTOCHECK = true;
+
+  protected const AUTOOPEN = true;
+
   const dbconn_SCHEMA = [
     "name" => "string",
     "user" => "?string",
@@ -64,7 +69,8 @@ class Pdo implements IDatabase {
     "replace_config" => ["?array|callable"],
     "config" => ["?array|callable"],
     "migration" => ["?array|string|callable"],
-    "auto_open" => ["bool", true],
+    "autocheck" => ["bool", self::AUTOCHECK],
+    "autoopen" => ["bool", self::AUTOOPEN],
   ];
 
   function __construct($dbconn=null, ?array $params=null) {
@@ -96,8 +102,8 @@ class Pdo implements IDatabase {
     # migrations
     $this->migration = $params["migration"] ?? static::MIGRATION;
     #
-    $defaultAutoOpen = self::params_SCHEMA["auto_open"][1];
-    if ($params["auto_open"] ?? $defaultAutoOpen) {
+    $this->autocheck = $params["autocheck"] ?? static::AUTOCHECK;
+    if ($params["autoopen"] ?? static::AUTOOPEN) {
       $this->open();
     }
   }
@@ -113,6 +119,8 @@ class Pdo implements IDatabase {
   /** @var array|string|callable */
   protected $migration;
 
+  protected bool $autocheck;
+
   protected ?\PDO $db = null;
 
   function getSql($query, ?array $params=null): string {
@@ -163,7 +171,7 @@ class Pdo implements IDatabase {
 
   const SQL_CHECK_LIVE = "select 1";
 
-  function ensure(): self {
+  function ensureLive(): self {
     try {
       $this->_query(static::SQL_CHECK_LIVE);
     } catch (\PDOException $e) {
@@ -206,6 +214,9 @@ class Pdo implements IDatabase {
   }
 
   function beginTransaction(?callable $func=null, bool $commit=true): void {
+    # s'assurer que la connexion à la BDD est active avant de commencer une
+    # transaction
+    if ($this->autocheck) $this->ensureLive();
     $this->db()->beginTransaction();
     if ($this->transactors !== null) {
       foreach ($this->transactors as $transactor) {
diff --git a/php/src/db/pgsql/Pgsql.php b/php/src/db/pgsql/Pgsql.php
index ca9b7e9..bda2423 100644
--- a/php/src/db/pgsql/Pgsql.php
+++ b/php/src/db/pgsql/Pgsql.php
@@ -34,7 +34,6 @@ class Pgsql implements IDatabase {
     }
   }
 
-
   protected const OPTIONS = [
     # XXX désactiver les connexions persistantes par défaut
     # pour réactiver par défaut, il faudrait vérifier la connexion à chaque fois
@@ -49,13 +48,18 @@ class Pgsql implements IDatabase {
 
   const MIGRATION = null;
 
+  protected const AUTOCHECK = true;
+
+  protected const AUTOOPEN = true;
+
   const params_SCHEMA = [
     "dbconn" => ["array"],
     "options" => ["?array|callable"],
     "replace_config" => ["?array|callable"],
     "config" => ["?array|callable"],
     "migration" => ["?array|string|callable"],
-    "auto_open" => ["bool", true],
+    "autocheck" => ["bool", self::AUTOCHECK],
+    "autoopen" => ["bool", self::AUTOOPEN],
   ];
 
   const dbconn_SCHEMA = [
@@ -113,8 +117,8 @@ class Pgsql implements IDatabase {
     # migrations
     $this->migration = $params["migration"] ?? static::MIGRATION;
     #
-    $defaultAutoOpen = self::params_SCHEMA["auto_open"][1];
-    if ($params["auto_open"] ?? $defaultAutoOpen) {
+    $this->autocheck = $params["autocheck"] ?? static::AUTOCHECK;
+    if ($params["autoopen"] ?? static::AUTOOPEN) {
       $this->open();
     }
   }
@@ -130,6 +134,8 @@ class Pgsql implements IDatabase {
   /** @var array|string|callable */
   protected $migration;
 
+  protected bool $autocheck;
+
   /** @var resource */
   protected $db = null;
 
@@ -209,7 +215,7 @@ class Pgsql implements IDatabase {
 
   const SQL_CHECK_LIVE = "select 1";
 
-  function ensure(): self {
+  function ensureLive(): self {
     try {
       $this->_query(static::SQL_CHECK_LIVE);
     } catch (\PDOException $e) {
@@ -267,6 +273,9 @@ class Pgsql implements IDatabase {
   }
 
   function beginTransaction(?callable $func=null, bool $commit=true): void {
+    # s'assurer que la connexion à la BDD est active avant de commencer une
+    # transaction
+    if ($this->autocheck) $this->ensureLive();
     $this->_exec("begin");
     if ($this->transactors !== null) {
       foreach ($this->transactors as $transactor) {
diff --git a/php/src/db/sqlite/Sqlite.php b/php/src/db/sqlite/Sqlite.php
index 1d52f2c..c82ca43 100644
--- a/php/src/db/sqlite/Sqlite.php
+++ b/php/src/db/sqlite/Sqlite.php
@@ -80,6 +80,10 @@ class Sqlite implements IDatabase {
 
   const MIGRATION = null;
 
+  protected const AUTOCHECK = true;
+
+  protected const AUTOOPEN = true;
+
   const params_SCHEMA = [
     "file" => ["string", ""],
     "flags" => ["int", SQLITE3_OPEN_READWRITE + SQLITE3_OPEN_CREATE],
@@ -88,7 +92,8 @@ class Sqlite implements IDatabase {
     "replace_config" => ["?array|callable"],
     "config" => ["?array|callable"],
     "migration" => ["?array|string|callable"],
-    "auto_open" => ["bool", true],
+    "autocheck" => ["bool", self::AUTOCHECK],
+    "autoopen" => ["bool", self::AUTOOPEN],
   ];
 
   function __construct(?string $file=null, ?array $params=null) {
@@ -117,9 +122,9 @@ class Sqlite implements IDatabase {
     # migrations
     $this->migration = $params["migration"] ?? static::MIGRATION;
     #
-    $defaultAutoOpen = self::params_SCHEMA["auto_open"][1];
     $this->inTransaction = false;
-    if ($params["auto_open"] ?? $defaultAutoOpen) {
+    $this->autocheck = $params["autocheck"] ?? static::AUTOCHECK;
+    if ($params["autoopen"] ?? static::AUTOOPEN) {
       $this->open();
     }
   }
@@ -147,6 +152,8 @@ class Sqlite implements IDatabase {
   /** @var array|string|callable */
   protected $migration;
 
+  protected bool $autocheck;
+
   /** @var SQLite3 */
   protected $db;
 
@@ -208,7 +215,7 @@ class Sqlite implements IDatabase {
 
   const SQL_CHECK_LIVE = "select 1";
 
-  function ensure(): self {
+  function ensureLive(): self {
     try {
       $this->_query(static::SQL_CHECK_LIVE);
     } catch (\PDOException $e) {
@@ -259,6 +266,9 @@ class Sqlite implements IDatabase {
   }
 
   function beginTransaction(?callable $func=null, bool $commit=true): void {
+    # s'assurer que la connexion à la BDD est active avant de commencer une
+    # transaction
+    if ($this->autocheck) $this->ensureLive();
     $this->db()->exec("begin");
     $this->inTransaction = true;
     if ($this->transactors !== null) {