diff --git a/lib/Doctrine/DBAL/Driver/OCI8/OCI8Exception.php b/lib/Doctrine/DBAL/Driver/OCI8/OCI8Exception.php
index 9d61ad42d08..af3a9d1a7a9 100644
--- a/lib/Doctrine/DBAL/Driver/OCI8/OCI8Exception.php
+++ b/lib/Doctrine/DBAL/Driver/OCI8/OCI8Exception.php
@@ -7,12 +7,16 @@
 class OCI8Exception extends AbstractDriverException
 {
     /**
-     * @param mixed[] $error
+     * @param mixed[]|false $error
      *
      * @return \Doctrine\DBAL\Driver\OCI8\OCI8Exception
      */
     public static function fromErrorInfo($error)
     {
+        if ($error === false) {
+            return new self('Database error occurred but no error information was retrieved from the driver.');
+        }
+
         return new self($error['message'], null, $error['code']);
     }
 }
diff --git a/lib/Doctrine/DBAL/Schema/MySqlSchemaManager.php b/lib/Doctrine/DBAL/Schema/MySqlSchemaManager.php
index 29f019ac363..c27e8308845 100644
--- a/lib/Doctrine/DBAL/Schema/MySqlSchemaManager.php
+++ b/lib/Doctrine/DBAL/Schema/MySqlSchemaManager.php
@@ -296,13 +296,20 @@ public function listTableDetails($tableName)
 
         $tableOptions = $this->_conn->fetchAssoc($sql);
 
+        if ($tableOptions === false) {
+            return $table;
+        }
+
         $table->addOption('engine', $tableOptions['ENGINE']);
+
         if ($tableOptions['TABLE_COLLATION'] !== null) {
             $table->addOption('collation', $tableOptions['TABLE_COLLATION']);
         }
+
         if ($tableOptions['AUTO_INCREMENT'] !== null) {
             $table->addOption('autoincrement', $tableOptions['AUTO_INCREMENT']);
         }
+
         $table->addOption('comment', $tableOptions['TABLE_COMMENT']);
         $table->addOption('create_options', $this->parseCreateOptions($tableOptions['CREATE_OPTIONS']));
 
diff --git a/lib/Doctrine/DBAL/Schema/Table.php b/lib/Doctrine/DBAL/Schema/Table.php
index 191294d6d15..c89298bb015 100644
--- a/lib/Doctrine/DBAL/Schema/Table.php
+++ b/lib/Doctrine/DBAL/Schema/Table.php
@@ -37,7 +37,9 @@ class Table extends AbstractAsset
     protected $_fkConstraints = [];
 
     /** @var mixed[] */
-    protected $_options = [];
+    protected $_options = [
+        'create_options' => [],
+    ];
 
     /** @var SchemaConfig|null */
     protected $_schemaConfig = null;
@@ -72,7 +74,7 @@ public function __construct($tableName, array $columns = [], array $indexes = []
             $this->_addForeignKeyConstraint($constraint);
         }
 
-        $this->_options = $options;
+        $this->_options = array_merge($this->_options, $options);
     }
 
     /**
diff --git a/tests/Doctrine/Tests/DBAL/Driver/OCI8/OCI8StatementTest.php b/tests/Doctrine/Tests/DBAL/Driver/OCI8/OCI8StatementTest.php
index b51f3bf2f5b..d6e73f57412 100644
--- a/tests/Doctrine/Tests/DBAL/Driver/OCI8/OCI8StatementTest.php
+++ b/tests/Doctrine/Tests/DBAL/Driver/OCI8/OCI8StatementTest.php
@@ -60,6 +60,11 @@ public function testExecute(array $params)
                 $this->equalTo($params[2])
             );
 
+        // the return value is irrelevant to the test
+        // but it has to be compatible with the method signature
+        $statement->method('errorInfo')
+            ->willReturn(false);
+
         // can't pass to constructor since we don't have a real database handle,
         // but execute must check the connection for the executeMode
         $conn = $this->getMockBuilder(OCI8Connection::class)
diff --git a/tests/Doctrine/Tests/DBAL/Sharding/PoolingShardManagerTest.php b/tests/Doctrine/Tests/DBAL/Sharding/PoolingShardManagerTest.php
index 78fd894de05..8954459eb94 100644
--- a/tests/Doctrine/Tests/DBAL/Sharding/PoolingShardManagerTest.php
+++ b/tests/Doctrine/Tests/DBAL/Sharding/PoolingShardManagerTest.php
@@ -41,6 +41,10 @@ public function testSelectGlobal()
     {
         $conn = $this->createConnectionMock();
         $conn->expects($this->once())->method('connect')->with($this->equalTo(0));
+        $conn->method('getParams')
+            ->willReturn([
+                'shardChoser' => $this->createMock(ShardChoser::class),
+            ]);
 
         $shardManager = new PoolingShardManager($conn);
         $shardManager->selectGlobal();