diff --git a/lib/private/DB/Exceptions/DbalException.php b/lib/private/DB/Exceptions/DbalException.php
index 81ee9c62a0f8d..05ea9e22a5d42 100644
--- a/lib/private/DB/Exceptions/DbalException.php
+++ b/lib/private/DB/Exceptions/DbalException.php
@@ -17,6 +17,7 @@
 use Doctrine\DBAL\Exception\ForeignKeyConstraintViolationException;
 use Doctrine\DBAL\Exception\InvalidArgumentException;
 use Doctrine\DBAL\Exception\InvalidFieldNameException;
+use Doctrine\DBAL\Exception\LockWaitTimeoutException;
 use Doctrine\DBAL\Exception\NonUniqueFieldNameException;
 use Doctrine\DBAL\Exception\NotNullConstraintViolationException;
 use Doctrine\DBAL\Exception\RetryableException;
@@ -82,6 +83,9 @@ public function getReason(): ?int {
 		/**
 		 * Other server errors
 		 */
+		if ($this->original instanceof LockWaitTimeoutException) {
+			return parent::REASON_LOCK_WAIT_TIMEOUT;
+		}
 		if ($this->original instanceof DatabaseObjectExistsException) {
 			return parent::REASON_DATABASE_OBJECT_EXISTS;
 		}
diff --git a/lib/public/DB/Exception.php b/lib/public/DB/Exception.php
index 8fef01ca0a4c5..6b908382aeab6 100644
--- a/lib/public/DB/Exception.php
+++ b/lib/public/DB/Exception.php
@@ -120,6 +120,13 @@ class Exception extends BaseException {
 	 */
 	public const REASON_UNIQUE_CONSTRAINT_VIOLATION = 14;
 
+	/**
+	 * The lock wait timeout was exceeded
+	 *
+	 * @since 30.0.0
+	 */
+	public const REASON_LOCK_WAIT_TIMEOUT = 15;
+
 	/**
 	 * @return int|null
 	 * @psalm-return Exception::REASON_*
diff --git a/tests/lib/DB/Exception/DbalExceptionTest.php b/tests/lib/DB/Exception/DbalExceptionTest.php
index 97f0efa4b6535..470beff9080b9 100644
--- a/tests/lib/DB/Exception/DbalExceptionTest.php
+++ b/tests/lib/DB/Exception/DbalExceptionTest.php
@@ -17,6 +17,7 @@
 use Doctrine\DBAL\Exception\ForeignKeyConstraintViolationException;
 use Doctrine\DBAL\Exception\InvalidArgumentException;
 use Doctrine\DBAL\Exception\InvalidFieldNameException;
+use Doctrine\DBAL\Exception\LockWaitTimeoutException;
 use Doctrine\DBAL\Exception\NonUniqueFieldNameException;
 use Doctrine\DBAL\Exception\NotNullConstraintViolationException;
 use Doctrine\DBAL\Exception\ServerException;
@@ -45,6 +46,7 @@ public function testDriverException(string $class, int $reason): void {
 
 	public function dataDriverException(): array {
 		return [
+			[LockWaitTimeoutException::class, DbalException::REASON_LOCK_WAIT_TIMEOUT],
 			[ForeignKeyConstraintViolationException::class, DbalException::REASON_FOREIGN_KEY_VIOLATION],
 			[NotNullConstraintViolationException::class, DbalException::REASON_NOT_NULL_CONSTRAINT_VIOLATION],
 			[UniqueConstraintViolationException::class, DbalException::REASON_UNIQUE_CONSTRAINT_VIOLATION],