diff --git a/admin_manual/installation/system_requirements.rst b/admin_manual/installation/system_requirements.rst
index 8ed3a56b3..d9581ded6 100644
--- a/admin_manual/installation/system_requirements.rst
+++ b/admin_manual/installation/system_requirements.rst
@@ -24,7 +24,8 @@ For best performance, stability and functionality we have documented some recomm
 |                  | - CentOS Stream                                                       |
 +------------------+-----------------------------------------------------------------------+
 | Database         | - MySQL 8.0 / **8.4** or MariaDB 10.6/ **10.11** (recommended) / 11.4 |
-|                  | - Oracle Database 11g (*only as part of an enterprise subscription*)  |
+|                  | - Oracle Database 11g, 18, 21, 23                                     |
+|                  |   (*only as part of an enterprise subscription*)                      |
 |                  | - PostgreSQL 12/13/14/15/16                                           |
 |                  | - SQLite (*only recommended for testing and minimal-instances*)       |
 +------------------+-----------------------------------------------------------------------+
diff --git a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_30.rst b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_30.rst
index b9b660db1..683fc3a43 100644
--- a/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_30.rst
+++ b/developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_30.rst
@@ -139,6 +139,16 @@ Deprecated APIs
 - Using the ``@StrictCookieRequired`` annotation is deprecated and the ``#[OCP\AppFramework\Http\Attribute\StrictCookiesRequired]`` attribute should be used instead.
 - Using the ``@NoCSRFRequired`` annotation is deprecated and the ``#[OCP\AppFramework\Http\Attribute\NoCSRFRequired]`` attribute should be used instead.
 - Using the ``OCP\Group\Backend\ICreateGroupBackend`` interface is now deprecated and the ``OCP\Group\Backend\ICreateNamedGroupBackend`` interface should be used instead.
+- Calling ``OCP\DB\QueryBuilder\IExpressionBuilder::andX()`` without arguments is deprecated and will throw an exception in a future version as the underlying library is removing the functionality.
+- Calling ``OCP\DB\QueryBuilder\IExpressionBuilder::orX()`` without arguments is deprecated and will throw an exception in a future version as the underlying library is removing the functionality.
+- Calling ``OCP\DB\QueryBuilder\IQueryBuilder::delete()`` with ``$alias`` is deprecated and will throw an exception in a future version as the underlying library is removing the functionality.
+- Calling ``OCP\DB\QueryBuilder\IQueryBuilder::getQueryPart()`` is deprecated and will throw an exception in a future version as the underlying library is removing the functionality.
+- Calling ``OCP\DB\QueryBuilder\IQueryBuilder::getQueryParts()`` is deprecated and will throw an exception in a future version as the underlying library is removing the functionality.
+- Calling ``OCP\DB\QueryBuilder\IQueryBuilder::getState()`` is deprecated and will throw an exception in a future version as the underlying library is removing the functionality.
+- Calling ``OCP\DB\QueryBuilder\IQueryBuilder::resetQueryPart()`` is deprecated and will throw an exception in a future version as the underlying library is removing the functionality. Create a new query builder object instead.
+- Calling ``OCP\DB\QueryBuilder\IQueryBuilder::resetQueryParts()`` is deprecated and will throw an exception in a future version as the underlying library is removing the functionality. Create a new query builder object instead.
+- Calling ``OCP\DB\QueryBuilder\IQueryBuilder::update()`` with ``$alias`` is deprecated and will throw an exception in a future version as the underlying library is removing the functionality.
+- Calling ``OCP\IDBConnection::getDatabasePlatform()`` is deprecated and will throw an exception in a future version as the underlying library is renaming and removing platforms which breaks the backwards-compatibility. Use ``getDatabaseProvider()`` instead.
 
 Removed APIs
 ^^^^^^^^^^^^