diff --git a/src/Connection.php b/src/Connection.php
index 870fc755930..32839d3bbd3 100644
--- a/src/Connection.php
+++ b/src/Connection.php
@@ -401,6 +401,8 @@ private function getDatabasePlatformVersion()
      * Returns the database server version if the underlying driver supports it.
      *
      * @return string|null
+     *
+     * @throws DBALException
      */
     private function getServerVersion()
     {
@@ -626,6 +628,8 @@ public function close()
      * @param int $level The level to set.
      *
      * @return int
+     *
+     * @throws DBALException
      */
     public function setTransactionIsolation($level)
     {
@@ -638,6 +642,8 @@ public function setTransactionIsolation($level)
      * Gets the currently active transaction isolation level.
      *
      * @return int The current transaction isolation level.
+     *
+     * @throws DBALException
      */
     public function getTransactionIsolation()
     {
@@ -1226,6 +1232,8 @@ protected function _getNestedTransactionSavePointName()
 
     /**
      * @return bool
+     *
+     * @throws DBALException
      */
     public function beginTransaction()
     {
@@ -1314,6 +1322,8 @@ public function commit()
 
     /**
      * Commits all current nesting transactions.
+     *
+     * @throws DBALException
      */
     private function commitAll(): void
     {
@@ -1442,6 +1452,8 @@ public function rollbackSavepoint($savepoint)
      * Gets the wrapped driver connection.
      *
      * @return DriverConnection
+     *
+     * @throws DBALException
      */
     public function getWrappedConnection()
     {
@@ -1513,6 +1525,8 @@ public function isRollbackOnly()
      * @param string $type  The name of the DBAL mapping type.
      *
      * @return mixed The converted value.
+     *
+     * @throws DBALException
      */
     public function convertToDatabaseValue($value, $type)
     {
@@ -1527,6 +1541,8 @@ public function convertToDatabaseValue($value, $type)
      * @param string $type  The name of the DBAL mapping type.
      *
      * @return mixed The converted type.
+     *
+     * @throws DBALException
      */
     public function convertToPHPValue($value, $type)
     {
@@ -1540,6 +1556,8 @@ public function convertToPHPValue($value, $type)
      * @param DriverStatement $stmt   The statement to bind the values to.
      * @param mixed[]         $params The map/list of named/positional parameters.
      * @param int[]|string[]  $types  The parameter types (PDO binding types or DBAL mapping types).
+     *
+     * @throws DBALException
      */
     private function _bindTypedValues(DriverStatement $stmt, array $params, array $types): void
     {
@@ -1581,6 +1599,8 @@ private function _bindTypedValues(DriverStatement $stmt, array $params, array $t
      * @param int|string|null $type  The type to bind (PDO or DBAL).
      *
      * @return mixed[] [0] => the (escaped) value, [1] => the binding type.
+     *
+     * @throws DBALException
      */
     private function getBindingInfo($value, $type)
     {
diff --git a/src/Connections/PrimaryReadReplicaConnection.php b/src/Connections/PrimaryReadReplicaConnection.php
index 2bf961900bd..00ab615d472 100644
--- a/src/Connections/PrimaryReadReplicaConnection.php
+++ b/src/Connections/PrimaryReadReplicaConnection.php
@@ -98,6 +98,7 @@ class PrimaryReadReplicaConnection extends Connection
      *
      * @param mixed[] $params
      *
+     * @throws DBALException
      * @throws InvalidArgumentException
      */
     public function __construct(array $params, Driver $driver, ?Configuration $config = null, ?EventManager $eventManager = null)
diff --git a/src/Driver/PDO/Connection.php b/src/Driver/PDO/Connection.php
index 7dc1821ed4e..f3c292c9b83 100644
--- a/src/Driver/PDO/Connection.php
+++ b/src/Driver/PDO/Connection.php
@@ -60,6 +60,8 @@ public function getServerVersion()
     }
 
     /**
+     * {@inheritDoc}
+     *
      * @return Statement
      */
     public function prepare(string $sql): StatementInterface
diff --git a/src/Event/Listeners/OracleSessionInit.php b/src/Event/Listeners/OracleSessionInit.php
index 67fc78c3b6e..065c1162198 100644
--- a/src/Event/Listeners/OracleSessionInit.php
+++ b/src/Event/Listeners/OracleSessionInit.php
@@ -3,6 +3,7 @@
 namespace Doctrine\DBAL\Event\Listeners;
 
 use Doctrine\Common\EventSubscriber;
+use Doctrine\DBAL\DBALException;
 use Doctrine\DBAL\Event\ConnectionEventArgs;
 use Doctrine\DBAL\Events;
 
@@ -44,6 +45,8 @@ public function __construct(array $oracleSessionVars = [])
 
     /**
      * @return void
+     *
+     * @throws DBALException
      */
     public function postConnect(ConnectionEventArgs $args)
     {
diff --git a/src/Platforms/AbstractPlatform.php b/src/Platforms/AbstractPlatform.php
index 65dbda3df83..332f10e77be 100644
--- a/src/Platforms/AbstractPlatform.php
+++ b/src/Platforms/AbstractPlatform.php
@@ -2165,6 +2165,8 @@ public function getColumnDeclarationListSQL(array $fields)
      *          a string that defines the complete column
      *
      * @return string DBMS specific SQL code portion that should be used to declare the column.
+     *
+     * @throws DBALException
      */
     public function getColumnDeclarationSQL($name, array $field)
     {
diff --git a/src/Platforms/MySqlPlatform.php b/src/Platforms/MySqlPlatform.php
index 3b305d91051..ac60b906082 100644
--- a/src/Platforms/MySqlPlatform.php
+++ b/src/Platforms/MySqlPlatform.php
@@ -2,6 +2,7 @@
 
 namespace Doctrine\DBAL\Platforms;
 
+use Doctrine\DBAL\DBALException;
 use Doctrine\DBAL\Schema\ForeignKeyConstraint;
 use Doctrine\DBAL\Schema\Identifier;
 use Doctrine\DBAL\Schema\Index;
@@ -694,6 +695,8 @@ protected function getPreAlterTableIndexForeignKeySQL(TableDiff $diff)
 
     /**
      * @return string[]
+     *
+     * @throws DBALException
      */
     private function getPreAlterTableAlterPrimaryKeySQL(TableDiff $diff, Index $index)
     {
@@ -733,6 +736,8 @@ private function getPreAlterTableAlterPrimaryKeySQL(TableDiff $diff, Index $inde
      * @param TableDiff $diff The table diff to gather the SQL for.
      *
      * @return string[]
+     *
+     * @throws DBALException
      */
     private function getPreAlterTableAlterIndexForeignKeySQL(TableDiff $diff)
     {
diff --git a/src/Platforms/SqlitePlatform.php b/src/Platforms/SqlitePlatform.php
index 14e90545451..3ab4c6c7d22 100644
--- a/src/Platforms/SqlitePlatform.php
+++ b/src/Platforms/SqlitePlatform.php
@@ -963,6 +963,8 @@ public function getAlterTableSQL(TableDiff $diff)
 
     /**
      * @return string[]|false
+     *
+     * @throws DBALException
      */
     private function getSimpleAlterTableSQL(TableDiff $diff)
     {
diff --git a/src/Query/QueryBuilder.php b/src/Query/QueryBuilder.php
index 7b712dbb751..5171f7b9682 100644
--- a/src/Query/QueryBuilder.php
+++ b/src/Query/QueryBuilder.php
@@ -3,6 +3,7 @@
 namespace Doctrine\DBAL\Query;
 
 use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\DBALException;
 use Doctrine\DBAL\Driver\Result;
 use Doctrine\DBAL\ParameterType;
 use Doctrine\DBAL\Query\Expression\CompositeExpression;
@@ -202,6 +203,8 @@ public function getState()
      * for insert, update and delete statements.
      *
      * @return Result|int
+     *
+     * @throws DBALException
      */
     public function execute()
     {