diff --git a/CHANGELOG.md b/CHANGELOG.md
index 957cb6fd1..930954b57 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,8 @@
 
 ## 2.0.2 under development
 
-- no changes in this release.
+- Bug #1170: Fix `ConvertException` incorrectly detecting `SQLSTATE[HY000]` errors as `IntegrityException` (@WarLikeLaux)
+- Enh #1170: Add `ConnectionException` for `SQLSTATE[08xxx]` errors and Oracle integrity error detection (@WarLikeLaux)
 
 ## 2.0.1 February 09, 2026
 
diff --git a/src/Exception/ConnectionException.php b/src/Exception/ConnectionException.php
new file mode 100644
index 000000000..baf400f80
--- /dev/null
+++ b/src/Exception/ConnectionException.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\Db\Exception;
+
+/**
+ * Represents an exception caused by a database connection failure.
+ */
+final class ConnectionException extends Exception {}
diff --git a/src/Exception/ConvertException.php b/src/Exception/ConvertException.php
index b4d00fe64..1eee3f93d 100644
--- a/src/Exception/ConvertException.php
+++ b/src/Exception/ConvertException.php
@@ -16,9 +16,23 @@
  */
 final class ConvertException
 {
-    private const MSG_INTEGRITY_EXCEPTION_1 = 'SQLSTATE[23';
-    private const MGS_INTEGRITY_EXCEPTION_2 = 'ORA-00001: unique constraint';
-    private const MSG_INTEGRITY_EXCEPTION_3 = 'SQLSTATE[HY';
+    private const MSG_CONNECTION_EXCEPTION = 'SQLSTATE[08';
+    private const MSG_INTEGRITY_EXCEPTION = 'SQLSTATE[23';
+    private const MYSQL_RECONNECT_EXCEPTIONS = [
+        'SQLSTATE[HY000]: General error: 2006 ',
+        'SQLSTATE[HY000]: General error: 4031 ',
+    ];
+    private const ORACLE_COMPATIBILITY_EXCEPTIONS = [
+        'ORA-00942:',
+    ];
+    private const ORACLE_INTEGRITY_EXCEPTIONS = [
+        'ORA-00001:',
+        'ORA-01400:',
+        'ORA-01407:',
+        'ORA-02290:',
+        'ORA-02291:',
+        'ORA-02292:',
+    ];
 
     public function __construct(
         private readonly \Exception $e,
@@ -36,13 +50,52 @@ public function run(): Exception
 
         $errorInfo = $this->e instanceof PDOException ? $this->e->errorInfo : null;
 
-        return match (
-            str_contains($message, self::MSG_INTEGRITY_EXCEPTION_1)
-            || str_contains($message, self::MGS_INTEGRITY_EXCEPTION_2)
-            || str_contains($message, self::MSG_INTEGRITY_EXCEPTION_3)
+        if (
+            str_contains($message, self::MSG_INTEGRITY_EXCEPTION)
+            || $this->isMysqlReconnectException($message)
+            || $this->isOracleCompatibilityException($message)
+            || $this->isOracleIntegrityException($message)
         ) {
-            true => new IntegrityException($message, $errorInfo, $this->e),
-            default => new Exception($message, $errorInfo, $this->e),
-        };
+            return new IntegrityException($message, $errorInfo, $this->e);
+        }
+
+        if (str_contains($message, self::MSG_CONNECTION_EXCEPTION)) {
+            return new ConnectionException($message, $errorInfo, $this->e);
+        }
+
+        return new Exception($message, $errorInfo, $this->e);
+    }
+
+    private function isMysqlReconnectException(string $message): bool
+    {
+        foreach (self::MYSQL_RECONNECT_EXCEPTIONS as $mysqlReconnectException) {
+            if (str_contains($message, $mysqlReconnectException)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private function isOracleCompatibilityException(string $message): bool
+    {
+        foreach (self::ORACLE_COMPATIBILITY_EXCEPTIONS as $oracleCompatibilityException) {
+            if (str_contains($message, $oracleCompatibilityException)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private function isOracleIntegrityException(string $message): bool
+    {
+        foreach (self::ORACLE_INTEGRITY_EXCEPTIONS as $oracleIntegrityException) {
+            if (str_contains($message, $oracleIntegrityException)) {
+                return true;
+            }
+        }
+
+        return false;
     }
 }
diff --git a/tests/Common/CommonCommandTest.php b/tests/Common/CommonCommandTest.php
index 456bf64f4..436a9f58f 100644
--- a/tests/Common/CommonCommandTest.php
+++ b/tests/Common/CommonCommandTest.php
@@ -1626,6 +1626,38 @@ public function testIntegrityViolation(): void
         $db->close();
     }
 
+    public function testIntegrityViolationOnForeignKey(): void
+    {
+        $db = $this->createConnection();
+        $command = $db->createCommand();
+        $schema = $db->getSchema();
+
+        if ($db->getDriverName() === 'sqlite') {
+            $db->createCommand('PRAGMA foreign_keys = ON')->execute();
+        }
+
+        if ($schema->getTableSchema('{{test_int_child}}') !== null) {
+            $command->dropTable('{{test_int_child}}')->execute();
+        }
+        if ($schema->getTableSchema('{{test_int_parent}}') !== null) {
+            $command->dropTable('{{test_int_parent}}')->execute();
+        }
+
+        $command->createTable('{{test_int_parent}}', ['id' => 'integer not null unique'])->execute();
+        $command->createTable(
+            '{{test_int_child}}',
+            [
+                'id' => 'integer not null unique',
+                'parent_id' => 'integer not null',
+                'CONSTRAINT [[test_int_fk]] FOREIGN KEY ([[parent_id]]) REFERENCES {{test_int_parent}} ([[id]])',
+            ],
+        )->execute();
+
+        $this->expectException(IntegrityException::class);
+
+        $command->insert('{{test_int_child}}', ['id' => 1, 'parent_id' => 999])->execute();
+    }
+
     public function testNoTablenameReplacement(): void
     {
         $db = $this->getSharedConnection();
diff --git a/tests/Common/CommonPdoCommandTest.php b/tests/Common/CommonPdoCommandTest.php
index d38b8d84c..0ef8ed235 100644
--- a/tests/Common/CommonPdoCommandTest.php
+++ b/tests/Common/CommonPdoCommandTest.php
@@ -5,9 +5,13 @@
 namespace Yiisoft\Db\Tests\Common;
 
 use PDO;
+use PDOException;
 use PHPUnit\Framework\Attributes\DataProviderExternal;
 use Psr\Log\LoggerInterface;
 use Psr\Log\LogLevel;
+use Yiisoft\Db\Exception\ConnectionException;
+use Yiisoft\Db\Exception\Exception;
+use Yiisoft\Db\Exception\IntegrityException;
 use Yiisoft\Db\Expression\Value\Param;
 use Yiisoft\Db\Driver\Pdo\AbstractPdoCommand;
 use InvalidArgumentException;
@@ -15,6 +19,8 @@
 use Yiisoft\Db\Tests\Provider\CommandPdoProvider;
 use Yiisoft\Db\Tests\Support\IntegrationTestCase;
 
+use const PHP_EOL;
+
 abstract class CommonPdoCommandTest extends IntegrationTestCase
 {
     #[DataProviderExternal(CommandPdoProvider::class, 'bindParam')]
@@ -213,6 +219,74 @@ protected function internalExecute(): void {}
         $command->testExecute();
     }
 
+    public function testInternalExecuteConvertsConnectionException(): void
+    {
+        $e = $this->executeCommandThrowingPdoException(
+            'SELECT 1',
+            'SQLSTATE[08006]: Connection failure: 7 no connection to the server',
+        );
+
+        $this->assertInstanceOf(ConnectionException::class, $e);
+        $this->assertInstanceOf(PDOException::class, $e->getPrevious());
+        $this->assertSame(
+            'SQLSTATE[08006]: Connection failure: 7 no connection to the server'
+            . PHP_EOL
+            . 'The SQL being executed was: SELECT 1',
+            $e->getMessage(),
+        );
+    }
+
+    public function testInternalExecuteConvertsOracleIntegrityException(): void
+    {
+        $e = $this->executeCommandThrowingPdoException(
+            'INSERT INTO test',
+            'ORA-02291: integrity constraint (SYS.FK_PROFILE_CUSTOMER) violated - parent key not found',
+        );
+
+        $this->assertInstanceOf(IntegrityException::class, $e);
+        $this->assertInstanceOf(PDOException::class, $e->getPrevious());
+        $this->assertSame(
+            'ORA-02291: integrity constraint (SYS.FK_PROFILE_CUSTOMER) violated - parent key not found'
+            . PHP_EOL
+            . 'The SQL being executed was: INSERT INTO test',
+            $e->getMessage(),
+        );
+    }
+
+    public function testInternalExecuteKeepsOracleMigrationExceptionAsIntegrityException(): void
+    {
+        $e = $this->executeCommandThrowingPdoException(
+            'DROP TABLE test',
+            'ORA-00942: table or view does not exist',
+        );
+
+        $this->assertInstanceOf(IntegrityException::class, $e);
+        $this->assertInstanceOf(PDOException::class, $e->getPrevious());
+        $this->assertSame(
+            'ORA-00942: table or view does not exist'
+            . PHP_EOL
+            . 'The SQL being executed was: DROP TABLE test',
+            $e->getMessage(),
+        );
+    }
+
+    public function testInternalExecuteKeepsMysqlReconnectExceptionAsIntegrityException(): void
+    {
+        $e = $this->executeCommandThrowingPdoException(
+            'SELECT 1',
+            'SQLSTATE[HY000]: General error: 2006 MySQL server has gone away',
+        );
+
+        $this->assertInstanceOf(IntegrityException::class, $e);
+        $this->assertInstanceOf(PDOException::class, $e->getPrevious());
+        $this->assertSame(
+            'SQLSTATE[HY000]: General error: 2006 MySQL server has gone away'
+            . PHP_EOL
+            . 'The SQL being executed was: SELECT 1',
+            $e->getMessage(),
+        );
+    }
+
     protected function createQueryLogger(string $sql, array $params = []): LoggerInterface
     {
         $logger = $this->createMock(LoggerInterface::class);
@@ -226,4 +300,39 @@ protected function createQueryLogger(string $sql, array $params = []): LoggerInt
             );
         return $logger;
     }
+
+    private function executeCommandThrowingPdoException(string $sql, string $message): Exception
+    {
+        $command = new class ($this->getSharedConnection(), $message) extends AbstractPdoCommand {
+            public function __construct($db, private string $message)
+            {
+                parent::__construct($db);
+            }
+
+            public function showDatabases(): array
+            {
+                return $this->showDatabases();
+            }
+
+            public function testExecute(): void
+            {
+                $this->internalExecute();
+            }
+
+            protected function pdoStatementExecute(): void
+            {
+                throw new PDOException($this->message);
+            }
+        };
+
+        $command->setSql($sql);
+
+        try {
+            $command->testExecute();
+        } catch (Exception $e) {
+            return $e;
+        }
+
+        $this->fail();
+    }
 }
diff --git a/tests/Db/Exception/ConvertExceptionTest.php b/tests/Db/Exception/ConvertExceptionTest.php
index bb742331a..2f69cca47 100644
--- a/tests/Db/Exception/ConvertExceptionTest.php
+++ b/tests/Db/Exception/ConvertExceptionTest.php
@@ -5,8 +5,11 @@
 namespace Yiisoft\Db\Tests\Db\Exception;
 
 use Exception;
+use PHPUnit\Framework\Attributes\DataProvider;
 use PHPUnit\Framework\TestCase;
+use Yiisoft\Db\Exception\ConnectionException;
 use Yiisoft\Db\Exception\ConvertException;
+use Yiisoft\Db\Exception\IntegrityException;
 
 use const PHP_EOL;
 
@@ -17,6 +20,14 @@
  */
 final class ConvertExceptionTest extends TestCase
 {
+    #[DataProvider('integrityExceptionMessages')]
+    public function testIntegrityException(string $message): void
+    {
+        $exception = (new ConvertException(new Exception($message), 'INSERT INTO test'))->run();
+
+        $this->assertInstanceOf(IntegrityException::class, $exception);
+    }
+
     public function testRun(): void
     {
         $e = new Exception('test');
@@ -27,4 +38,57 @@ public function testRun(): void
         $this->assertSame($e, $exception->getPrevious());
         $this->assertSame('test' . PHP_EOL . 'The SQL being executed was: ' . $rawSql, $exception->getMessage());
     }
+
+    #[DataProvider('connectionExceptionMessages')]
+    public function testConnectionException(string $message): void
+    {
+        $exception = (new ConvertException(new Exception($message), 'SELECT 1'))->run();
+
+        $this->assertInstanceOf(ConnectionException::class, $exception);
+    }
+
+    #[DataProvider('generalExceptionMessages')]
+    public function testGeneralException(string $message): void
+    {
+        $exception = (new ConvertException(new Exception($message), 'SELECT 1'))->run();
+
+        $this->assertNotInstanceOf(IntegrityException::class, $exception);
+        $this->assertNotInstanceOf(ConnectionException::class, $exception);
+    }
+
+    public static function connectionExceptionMessages(): array
+    {
+        return [
+            'connection exception' => ['SQLSTATE[08000]: Connection exception'],
+            'sqlclient unable to establish connection' => ['SQLSTATE[08001]: SQL-client unable to establish SQL-connection'],
+            'connection does not exist' => ['SQLSTATE[08003]: Connection does not exist'],
+            'sqlserver rejected connection' => ['SQLSTATE[08004]: SQL server rejected establishment of SQL-connection'],
+            'connection failure' => ['SQLSTATE[08006]: Connection failure: 7 no connection to the server'],
+        ];
+    }
+
+    public static function generalExceptionMessages(): array
+    {
+        return [
+            'general error' => ['SQLSTATE[HY000]: General error: 7 no connection to the server'],
+        ];
+    }
+
+    public static function integrityExceptionMessages(): array
+    {
+        return [
+            'mysql server has gone away' => ['SQLSTATE[HY000]: General error: 2006 MySQL server has gone away'],
+            'mysql server disconnected inactive client' => [
+                'SQLSTATE[HY000]: General error: 4031 The client was disconnected by the server because of inactivity.',
+            ],
+            'sqlstate class 23' => ['SQLSTATE[23000]: Integrity constraint violation: 19 UNIQUE constraint failed'],
+            'oracle unique constraint' => ['ORA-00001: unique constraint (SYS.PK_ID) violated'],
+            'oracle cannot insert null' => ['ORA-01400: cannot insert NULL into ("SYS"."PROFILE"."DESCRIPTION")'],
+            'oracle cannot update null' => ['ORA-01407: cannot update ("SYS"."PROFILE"."DESCRIPTION") to NULL'],
+            'oracle check constraint' => ['ORA-02290: check constraint (SYS.CK_PROFILE_DESCRIPTION) violated'],
+            'oracle parent key not found' => ['ORA-02291: integrity constraint (SYS.FK_PROFILE_CUSTOMER) violated - parent key not found'],
+            'oracle child record found' => ['ORA-02292: integrity constraint (SYS.FK_PROFILE_CUSTOMER) violated - child record found'],
+            'oracle table does not exist for migration compatibility' => ['ORA-00942: table or view does not exist'],
+        ];
+    }
 }