diff --git a/.github/workflows/build-oracle.yml b/.github/workflows/build-oracle.yml
new file mode 100644
index 0000000..79dd54c
--- /dev/null
+++ b/.github/workflows/build-oracle.yml
@@ -0,0 +1,43 @@
+on:
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'CHANGELOG.md'
+      - '.gitignore'
+      - '.gitattributes'
+
+  push:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'CHANGELOG.md'
+      - '.gitignore'
+      - '.gitattributes'
+
+name: build-oracle
+
+jobs:
+  oracle:
+    name: Oracle tests.
+    uses: php-forge/actions/.github/workflows/phpunit-database.yml@main
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+    with:
+      concurrency-group: oracle-${{ github.ref }}
+      database-env: |
+        {
+          "ORACLE_DATABASE": "yiitest",
+          "ORACLE_PASSWORD": "root"
+        }
+      database-health-cmd: "healthcheck.sh"
+      database-health-retries: 10
+      database-image: gvenzl/oracle-free
+      database-port: 1521
+      database-type: oci
+      database-versions: '["23"]'
+      enable-concurrency: true
+      extensions: pdo, pdo_oci
+      os: '["ubuntu-latest"]'
+      php-version: '["8.4"]'
+      phpunit-group: oci
diff --git a/tests/TestCase.php b/tests/TestCase.php
index 58c9e0e..521ee5d 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -178,11 +178,18 @@ protected function createDatabase(): void
             $command->dropTable('multiple_tree')->execute();
         }
 
+        $primaryKey = $this->driverName === 'oci'
+            ? 'NUMBER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY'
+            : $this->primaryKey()->notNull();
+        $name = $this->driverName === 'oci'
+            ? $this->string()->notNull()
+            : $this->text()->notNull();
+
         $command->createTable(
             'tree',
             [
-                'id' => $this->primaryKey()->notNull(),
-                'name' => $this->text()->notNull(),
+                'id' => $primaryKey,
+                'name' => $name,
                 'lft' => $this->integer()->notNull(),
                 'rgt' => $this->integer()->notNull(),
                 'depth' => $this->integer()->notNull(),
@@ -192,9 +199,9 @@ protected function createDatabase(): void
         $command->createTable(
             'multiple_tree',
             [
-                'id' => $this->primaryKey()->notNull(),
+                'id' => $primaryKey,
                 'tree' => $this->integer(),
-                'name' => $this->text()->notNull(),
+                'name' => $name,
                 'lft' => $this->integer()->notNull(),
                 'rgt' => $this->integer()->notNull(),
                 'depth' => $this->integer()->notNull(),
diff --git a/tests/oracle/CacheManagementTest.php b/tests/oracle/CacheManagementTest.php
new file mode 100644
index 0000000..96949d7
--- /dev/null
+++ b/tests/oracle/CacheManagementTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractCacheManagement;
+
+#[Group('oci')]
+final class CacheManagementTest extends AbstractCacheManagement
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/ExceptionHandlingTest.php b/tests/oracle/ExceptionHandlingTest.php
new file mode 100644
index 0000000..15b29a1
--- /dev/null
+++ b/tests/oracle/ExceptionHandlingTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractExceptionHandling;
+
+#[Group('oci')]
+final class ExceptionHandlingTest extends AbstractExceptionHandling
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/ExtensibilityTest.php b/tests/oracle/ExtensibilityTest.php
new file mode 100644
index 0000000..7df7e2f
--- /dev/null
+++ b/tests/oracle/ExtensibilityTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractExtensibility;
+
+#[Group('oci')]
+final class ExtensibilityTest extends AbstractExtensibility
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/NodeAppendTest.php b/tests/oracle/NodeAppendTest.php
new file mode 100644
index 0000000..a8c5c0d
--- /dev/null
+++ b/tests/oracle/NodeAppendTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractNodeAppend;
+
+#[Group('oci')]
+final class NodeAppendTest extends AbstractNodeAppend
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/NodeDeleteTest.php b/tests/oracle/NodeDeleteTest.php
new file mode 100644
index 0000000..973c548
--- /dev/null
+++ b/tests/oracle/NodeDeleteTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractNodeDelete;
+
+#[Group('oci')]
+final class NodeDeleteTest extends AbstractNodeDelete
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/NodeInsertTest.php b/tests/oracle/NodeInsertTest.php
new file mode 100644
index 0000000..88b73f8
--- /dev/null
+++ b/tests/oracle/NodeInsertTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractNodeInsert;
+
+#[Group('oci')]
+final class NodeInsertTest extends AbstractNodeInsert
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/NodePrependTest.php b/tests/oracle/NodePrependTest.php
new file mode 100644
index 0000000..a205529
--- /dev/null
+++ b/tests/oracle/NodePrependTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractNodePrepend;
+
+#[Group('oci')]
+final class NodePrependTest extends AbstractNodePrepend
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/NodeStateTest.php b/tests/oracle/NodeStateTest.php
new file mode 100644
index 0000000..70a9dcc
--- /dev/null
+++ b/tests/oracle/NodeStateTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractNodeState;
+
+#[Group('oci')]
+final class NodeStateTest extends AbstractNodeState
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/QueryBehaviorTest.php b/tests/oracle/QueryBehaviorTest.php
new file mode 100644
index 0000000..048dcb8
--- /dev/null
+++ b/tests/oracle/QueryBehaviorTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractQueryBehavior;
+
+#[Group('oci')]
+final class QueryBehaviorTest extends AbstractQueryBehavior
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/TreeTraversalTest.php b/tests/oracle/TreeTraversalTest.php
new file mode 100644
index 0000000..0f511c4
--- /dev/null
+++ b/tests/oracle/TreeTraversalTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractTreeTraversal;
+
+#[Group('oci')]
+final class TreeTraversalTest extends AbstractTreeTraversal
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}
diff --git a/tests/oracle/ValidationAndStructureTest.php b/tests/oracle/ValidationAndStructureTest.php
new file mode 100644
index 0000000..4afaf84
--- /dev/null
+++ b/tests/oracle/ValidationAndStructureTest.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace yii2\extensions\nestedsets\tests\oracle;
+
+use PHPUnit\Framework\Attributes\Group;
+use yii2\extensions\nestedsets\tests\base\AbstractValidationAndStructure;
+
+#[Group('oci')]
+final class ValidationAndStructureTest extends AbstractValidationAndStructure
+{
+    protected string $driverName = 'oci';
+    protected string|null $dsn = 'oci:dbname=localhost/FREEPDB1;charset=AL32UTF8;';
+    protected string $password = 'root';
+    protected string $username = 'system';
+}