diff --git a/lib/Doctrine/DBAL/Connection.php b/lib/Doctrine/DBAL/Connection.php
index e0159a3e65c..86d66046eaa 100644
--- a/lib/Doctrine/DBAL/Connection.php
+++ b/lib/Doctrine/DBAL/Connection.php
@@ -258,6 +258,13 @@ public function getDatabase()
      */
     public function getHost()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Connection::getHost() is deprecated, get the database server host from application config ' .
+            'or as a last resort from internal Connection::getParams() API.'
+        );
+
         return $this->params['host'] ?? null;
     }
 
@@ -270,6 +277,13 @@ public function getHost()
      */
     public function getPort()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Connection::getPort() is deprecated, get the database server port from application config ' .
+            'or as a last resort from internal Connection::getParams() API.'
+        );
+
         return $this->params['port'] ?? null;
     }
 
@@ -282,6 +296,13 @@ public function getPort()
      */
     public function getUsername()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Connection::getUsername() is deprecated, get the username from application config ' .
+            'or as a last resort from internal Connection::getParams() API.'
+        );
+
         return $this->params['user'] ?? null;
     }
 
@@ -294,6 +315,13 @@ public function getUsername()
      */
     public function getPassword()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Connection::getPassword() is deprecated, get the password from application config ' .
+            'or as a last resort from internal Connection::getParams() API.'
+        );
+
         return $this->params['password'] ?? null;
     }
 
diff --git a/lib/Doctrine/DBAL/Driver/IBMDB2/DB2Driver.php b/lib/Doctrine/DBAL/Driver/IBMDB2/DB2Driver.php
index 056dbacd983..f4e50c9d4c6 100644
--- a/lib/Doctrine/DBAL/Driver/IBMDB2/DB2Driver.php
+++ b/lib/Doctrine/DBAL/Driver/IBMDB2/DB2Driver.php
@@ -3,6 +3,7 @@
 namespace Doctrine\DBAL\Driver\IBMDB2;
 
 use Doctrine\DBAL\Driver\AbstractDB2Driver;
+use Doctrine\Deprecations\Deprecation;
 
 /**
  * IBM DB2 Driver.
@@ -35,6 +36,12 @@ public function connect(array $params, $username = null, $password = null, array
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'ibm_db2';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/Mysqli/Driver.php b/lib/Doctrine/DBAL/Driver/Mysqli/Driver.php
index 9ac74f27d07..ca2df928902 100644
--- a/lib/Doctrine/DBAL/Driver/Mysqli/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/Mysqli/Driver.php
@@ -4,6 +4,7 @@
 
 use Doctrine\DBAL\Driver\AbstractMySQLDriver;
 use Doctrine\DBAL\Exception;
+use Doctrine\Deprecations\Deprecation;
 
 class Driver extends AbstractMySQLDriver
 {
@@ -24,6 +25,12 @@ public function connect(array $params, $username = null, $password = null, array
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'mysqli';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/OCI8/Driver.php b/lib/Doctrine/DBAL/Driver/OCI8/Driver.php
index 5f7e3c0a9e8..c58ceaf8b54 100644
--- a/lib/Doctrine/DBAL/Driver/OCI8/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/OCI8/Driver.php
@@ -4,6 +4,7 @@
 
 use Doctrine\DBAL\Driver\AbstractOracleDriver;
 use Doctrine\DBAL\Exception;
+use Doctrine\Deprecations\Deprecation;
 
 use const OCI_NO_AUTO_COMMIT;
 
@@ -50,6 +51,12 @@ protected function _constructDsn(array $params)
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'oci8';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/PDOIbm/Driver.php b/lib/Doctrine/DBAL/Driver/PDOIbm/Driver.php
index 0543d8786e7..875310ee848 100644
--- a/lib/Doctrine/DBAL/Driver/PDOIbm/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/PDOIbm/Driver.php
@@ -4,6 +4,7 @@
 
 use Doctrine\DBAL\Driver\AbstractDB2Driver;
 use Doctrine\DBAL\Driver\PDO\Connection;
+use Doctrine\Deprecations\Deprecation;
 
 /**
  * Driver for the PDO IBM extension.
@@ -58,6 +59,12 @@ private function _constructPdoDsn(array $params)
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'pdo_ibm';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php b/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php
index 25eb2fbdb6f..70d56778d22 100644
--- a/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/PDOMySql/Driver.php
@@ -5,6 +5,7 @@
 use Doctrine\DBAL\Driver\AbstractMySQLDriver;
 use Doctrine\DBAL\Driver\PDO;
 use Doctrine\DBAL\Exception;
+use Doctrine\Deprecations\Deprecation;
 use PDOException;
 
 /**
@@ -73,6 +74,12 @@ protected function constructPdoDsn(array $params)
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'pdo_mysql';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/PDOOracle/Driver.php b/lib/Doctrine/DBAL/Driver/PDOOracle/Driver.php
index b8e0a96f44e..a84c67fb618 100644
--- a/lib/Doctrine/DBAL/Driver/PDOOracle/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/PDOOracle/Driver.php
@@ -5,6 +5,7 @@
 use Doctrine\DBAL\Driver\AbstractOracleDriver;
 use Doctrine\DBAL\Driver\PDO;
 use Doctrine\DBAL\Exception;
+use Doctrine\Deprecations\Deprecation;
 use PDOException;
 
 /**
@@ -54,6 +55,12 @@ private function constructPdoDsn(array $params)
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'pdo_oracle';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/PDOPgSql/Driver.php b/lib/Doctrine/DBAL/Driver/PDOPgSql/Driver.php
index 83076aa8c06..bbdf23fdc2f 100644
--- a/lib/Doctrine/DBAL/Driver/PDOPgSql/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/PDOPgSql/Driver.php
@@ -5,6 +5,7 @@
 use Doctrine\DBAL\Driver\AbstractPostgreSQLDriver;
 use Doctrine\DBAL\Driver\PDO;
 use Doctrine\DBAL\Exception;
+use Doctrine\Deprecations\Deprecation;
 use PDOException;
 
 use function defined;
@@ -116,6 +117,12 @@ private function _constructPdoDsn(array $params)
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'pdo_pgsql';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php b/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php
index fc2b881ffce..efced0c0093 100644
--- a/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/PDOSqlite/Driver.php
@@ -6,6 +6,7 @@
 use Doctrine\DBAL\Driver\PDO;
 use Doctrine\DBAL\Exception;
 use Doctrine\DBAL\Platforms\SqlitePlatform;
+use Doctrine\Deprecations\Deprecation;
 use PDOException;
 
 use function array_merge;
@@ -81,6 +82,12 @@ protected function _constructPdoDsn(array $params)
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'pdo_sqlite';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/PDOSqlsrv/Driver.php b/lib/Doctrine/DBAL/Driver/PDOSqlsrv/Driver.php
index d8f22505561..8784582eb37 100644
--- a/lib/Doctrine/DBAL/Driver/PDOSqlsrv/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/PDOSqlsrv/Driver.php
@@ -5,6 +5,7 @@
 use Doctrine\DBAL\Driver\AbstractSQLServerDriver;
 use Doctrine\DBAL\Driver\AbstractSQLServerDriver\Exception\PortWithoutHost;
 use Doctrine\DBAL\Driver\PDO;
+use Doctrine\Deprecations\Deprecation;
 
 use function is_int;
 use function sprintf;
@@ -95,6 +96,12 @@ private function getConnectionOptionsDsn(array $connectionOptions): string
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'pdo_sqlsrv';
     }
 }
diff --git a/lib/Doctrine/DBAL/Driver/SQLAnywhere/Driver.php b/lib/Doctrine/DBAL/Driver/SQLAnywhere/Driver.php
index 81d88232dca..98d5f3f302f 100644
--- a/lib/Doctrine/DBAL/Driver/SQLAnywhere/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/SQLAnywhere/Driver.php
@@ -4,6 +4,7 @@
 
 use Doctrine\DBAL\Driver\AbstractSQLAnywhereDriver;
 use Doctrine\DBAL\Exception;
+use Doctrine\Deprecations\Deprecation;
 
 use function array_keys;
 use function array_map;
@@ -46,6 +47,12 @@ public function connect(array $params, $username = null, $password = null, array
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'sqlanywhere';
     }
 
diff --git a/lib/Doctrine/DBAL/Driver/SQLSrv/Driver.php b/lib/Doctrine/DBAL/Driver/SQLSrv/Driver.php
index a57128d9dd8..959dbcae1bd 100644
--- a/lib/Doctrine/DBAL/Driver/SQLSrv/Driver.php
+++ b/lib/Doctrine/DBAL/Driver/SQLSrv/Driver.php
@@ -4,6 +4,7 @@
 
 use Doctrine\DBAL\Driver\AbstractSQLServerDriver;
 use Doctrine\DBAL\Driver\AbstractSQLServerDriver\Exception\PortWithoutHost;
+use Doctrine\Deprecations\Deprecation;
 
 /**
  * Driver for ext/sqlsrv.
@@ -57,6 +58,12 @@ public function connect(array $params, $username = null, $password = null, array
      */
     public function getName()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'Driver::getName() is deprecated'
+        );
+
         return 'sqlsrv';
     }
 }
diff --git a/lib/Doctrine/DBAL/Event/ConnectionEventArgs.php b/lib/Doctrine/DBAL/Event/ConnectionEventArgs.php
index 0b6ffbb9ded..35fadc40b54 100644
--- a/lib/Doctrine/DBAL/Event/ConnectionEventArgs.php
+++ b/lib/Doctrine/DBAL/Event/ConnectionEventArgs.php
@@ -7,6 +7,7 @@
 use Doctrine\DBAL\Driver;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\AbstractSchemaManager;
+use Doctrine\Deprecations\Deprecation;
 
 /**
  * Event Arguments used when a Driver connection is established inside {@link Connection}.
@@ -36,6 +37,13 @@ public function getConnection()
      */
     public function getDriver()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'ConnectionEventArgs::getDriver() is deprecated, ' .
+            'use ConnectionEventArgs::getConnection()->getDriver() instead.'
+        );
+
         return $this->connection->getDriver();
     }
 
@@ -46,6 +54,13 @@ public function getDriver()
      */
     public function getDatabasePlatform()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'ConnectionEventArgs::getDatabasePlatform() is deprecated, ' .
+            'use ConnectionEventArgs::getConnection()->getDatabasePlatform() instead.'
+        );
+
         return $this->connection->getDatabasePlatform();
     }
 
@@ -56,6 +71,13 @@ public function getDatabasePlatform()
      */
     public function getSchemaManager()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'ConnectionEventArgs::getSchemaManager() is deprecated, ' .
+            'use ConnectionEventArgs::getConnection()->getSchemaManager() instead.'
+        );
+
         return $this->connection->getSchemaManager();
     }
 }
diff --git a/lib/Doctrine/DBAL/Event/SchemaAlterTableAddColumnEventArgs.php b/lib/Doctrine/DBAL/Event/SchemaAlterTableAddColumnEventArgs.php
index 30a1a9ca78a..e61a48d064c 100644
--- a/lib/Doctrine/DBAL/Event/SchemaAlterTableAddColumnEventArgs.php
+++ b/lib/Doctrine/DBAL/Event/SchemaAlterTableAddColumnEventArgs.php
@@ -5,6 +5,7 @@
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\Column;
 use Doctrine\DBAL\Schema\TableDiff;
+use Doctrine\Deprecations\Deprecation;
 
 use function array_merge;
 use function func_get_args;
@@ -67,6 +68,15 @@ public function getPlatform()
      */
     public function addSql($sql)
     {
+        if (is_array($sql)) {
+            Deprecation::trigger(
+                'doctrine/dbal',
+                'https://github.com/doctrine/dbal/issues/3580',
+                'Passing multiple SQL statements as an array to SchemaAlterTableAddColumnEventaArrgs::addSql() ' .
+                'is deprecated. Pass each statement as an individual argument instead.'
+            );
+        }
+
         $this->sql = array_merge($this->sql, is_array($sql) ? $sql : func_get_args());
 
         return $this;
diff --git a/lib/Doctrine/DBAL/Event/SchemaColumnDefinitionEventArgs.php b/lib/Doctrine/DBAL/Event/SchemaColumnDefinitionEventArgs.php
index 7c962a928f4..4264e4b972e 100644
--- a/lib/Doctrine/DBAL/Event/SchemaColumnDefinitionEventArgs.php
+++ b/lib/Doctrine/DBAL/Event/SchemaColumnDefinitionEventArgs.php
@@ -5,6 +5,7 @@
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\Column;
+use Doctrine\Deprecations\Deprecation;
 
 /**
  * Event Arguments used when the portable column definition is generated inside {@link AbstractPlatform}.
@@ -103,6 +104,13 @@ public function getConnection()
      */
     public function getDatabasePlatform()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'SchemaColumnDefinitionEventArgs::getDatabasePlatform() is deprecated, ' .
+            'use SchemaColumnDefinitionEventArgs::getConnection()->getDatabasePlatform() instead.'
+        );
+
         return $this->connection->getDatabasePlatform();
     }
 }
diff --git a/lib/Doctrine/DBAL/Event/SchemaIndexDefinitionEventArgs.php b/lib/Doctrine/DBAL/Event/SchemaIndexDefinitionEventArgs.php
index 055a19a7c27..868243c8069 100644
--- a/lib/Doctrine/DBAL/Event/SchemaIndexDefinitionEventArgs.php
+++ b/lib/Doctrine/DBAL/Event/SchemaIndexDefinitionEventArgs.php
@@ -5,6 +5,7 @@
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\Index;
+use Doctrine\Deprecations\Deprecation;
 
 /**
  * Event Arguments used when the portable index definition is generated inside {@link AbstractSchemaManager}.
@@ -83,10 +84,19 @@ public function getConnection()
     }
 
     /**
+     * @deprecated Use SchemaIndexDefinitionEventArgs::getConnection() and Connection::getDatabasePlatform() instead.
+     *
      * @return AbstractPlatform
      */
     public function getDatabasePlatform()
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/issues/3580',
+            'SchemaIndexDefinitionEventArgs::getDatabasePlatform() is deprecated, ' .
+            'use SchemaIndexDefinitionEventArgs::getConnection()->getDatabasePlatform() instead.'
+        );
+
         return $this->connection->getDatabasePlatform();
     }
 }
diff --git a/lib/Doctrine/DBAL/Schema/AbstractSchemaManager.php b/lib/Doctrine/DBAL/Schema/AbstractSchemaManager.php
index df037f070e4..2cad11a86e5 100644
--- a/lib/Doctrine/DBAL/Schema/AbstractSchemaManager.php
+++ b/lib/Doctrine/DBAL/Schema/AbstractSchemaManager.php
@@ -9,6 +9,7 @@
 use Doctrine\DBAL\Events;
 use Doctrine\DBAL\Exception;
 use Doctrine\DBAL\Platforms\AbstractPlatform;
+use Doctrine\Deprecations\Deprecation;
 use Throwable;
 
 use function array_filter;
@@ -20,6 +21,7 @@
 use function count;
 use function func_get_args;
 use function is_callable;
+use function is_string;
 use function preg_match;
 use function str_replace;
 use function strtolower;
@@ -197,6 +199,15 @@ public function listTableIndexes($table)
      */
     public function tablesExist($names)
     {
+        if (is_string($names)) {
+            Deprecation::trigger(
+                'doctrine/dbal',
+                'https://github.com/doctrine/dbal/issues/3580',
+                'The usage of a string $tableNames in AbstractSchemaManager::tablesExist is deprecated. ' .
+                'Pass a one-element array instead.'
+            );
+        }
+
         $names = array_map('strtolower', (array) $names);
 
         return count($names) === count(array_intersect($names, array_map('strtolower', $this->listTableNames())));