diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 442c46f96a72..ffec6f05b638 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -155,9 +155,9 @@ jobs:
       matrix:
         include:
           - rdbms: oracle_atps
-          - rdbms: oracle_db19c
-          - rdbms: oracle_db21c
-          - rdbms: oracle_db23c
+          #- rdbms: oracle_db19c
+          #- rdbms: oracle_db21c
+          #- rdbms: oracle_db23c
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
@@ -249,6 +249,122 @@ jobs:
       - name: Omit produced artifacts from build cache
         run: ./ci/before-cache.sh
 
+  # Job for builds on Oracle TP infrastructure.
+  # This is untrusted, even for pushes, see below.
+  otp:
+    permissions:
+      contents: read
+    name: GraalVM 21 - ${{matrix.rdbms}}
+    runs-on: [ self-hosted, Linux, X64, OracleTestPilot ]
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          #- rdbms: autonomous-transaction-processing-serverless
+          - rdbms: base-database-service-19c
+          - rdbms: base-database-service-21c
+          - rdbms: base-database-service-23ai
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+      - name: Set up Java 21
+        uses: graalvm/setup-graalvm@aafbedb8d382ed0ca6167d3a051415f20c859274 # v1.2.8
+        with:
+          distribution: 'graalvm'
+          java-version: '21'
+      - name: Generate cache key
+        id: cache-key
+        run: |
+          CURRENT_BRANCH="${{ github.repository != 'hibernate/hibernate-orm' && 'fork' || github.base_ref || github.ref_name }}"
+          CURRENT_MONTH=$(/bin/date -u "+%Y-%m")
+          CURRENT_DAY=$(/bin/date -u "+%d")
+          ROOT_CACHE_KEY="buildtool-cache-atlas"
+          echo "buildtool-monthly-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}" >> $GITHUB_OUTPUT
+          echo "buildtool-monthly-branch-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}-${CURRENT_BRANCH}" >> $GITHUB_OUTPUT
+          echo "buildtool-cache-key=${ROOT_CACHE_KEY}-${CURRENT_MONTH}-${CURRENT_BRANCH}-${CURRENT_DAY}" >> $GITHUB_OUTPUT
+      - name: Cache Maven/Gradle Dependency/Dist Caches
+        id: cache-maven
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        # if it's not a pull request, we restore and save the cache
+        if: github.event_name != 'pull_request'
+        with:
+          path: |
+            ~/.m2/repository/
+            ~/.m2/wrapper/
+            ~/.gradle/caches/modules-2
+            ~/.gradle/wrapper/
+          # A new cache will be stored daily. After that first store of the day, cache save actions will fail because the cache is immutable but it's not a problem.
+          # The whole cache is dropped monthly to prevent unlimited growth.
+          # The cache is per branch but in case we don't find a branch for a given branch, we will get a cache from another branch.
+          key: ${{ steps.cache-key.outputs.buildtool-cache-key }}
+          restore-keys: |
+            ${{ steps.cache-key.outputs.buildtool-monthly-branch-cache-key }}-
+            ${{ steps.cache-key.outputs.buildtool-monthly-cache-key }}-
+      - name: Restore Maven/Gradle Dependency/Dist Caches
+        uses: actions/cache/restore@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+        # if it is a pull request, we restore the cache but we don't save it
+        if: github.event_name == 'pull_request'
+        with:
+          path: |
+            ~/.m2/repository/
+            ~/.m2/wrapper/
+            ~/.gradle/caches/modules-2
+            ~/.gradle/wrapper/
+          key: ${{ steps.cache-key.outputs.buildtool-cache-key }}
+          restore-keys: |
+            ${{ steps.cache-key.outputs.buildtool-monthly-branch-cache-key }}-
+            ${{ steps.cache-key.outputs.buildtool-monthly-cache-key }}-
+
+      - id: create_database
+        uses: loiclefevre/test@v1.0.17
+        with:
+          oci-service: ${{ matrix.rdbms }}
+          action: create
+          user: hibernate_orm_test
+
+      - name: Run build script
+        env:
+          RDBMS: ${{ matrix.rdbms }}
+          RUNID: ${{ github.run_number }}
+          TESTPILOT_CONNECTION_STRING_SUFFIX: ${{ steps.create_database.outputs.connection_string_suffix }}
+          TESTPILOT_PASSWORD: ${{ steps.create_database.outputs.database_password }}
+          API_HOST: ""
+          TESTPILOT_CLIENT_ID: ""
+          TESTPILOT_TOKEN: ""
+          # Needed for TFO (TCP fast open)
+          LD_PRELOAD: /home/ubuntu/libtfojdbc1.so
+          LD_LIBRARY_PATH: /home/ubuntu
+        run: ./ci/build-github.sh
+        shell: bash
+
+      - uses: loiclefevre/test@v1.0.17
+        if: always()
+        with:
+          oci-service: ${{ matrix.rdbms }}
+          action: delete
+          user: hibernate_orm_test
+
+      # Upload build scan data.
+      # The actual publishing must be done in a separate job (see ci-report.yml).
+      # We don't write to the remote cache as that would be unsafe.
+      # That's even on push, because we do not trust Atlas runners to hold secrets: they are shared infrastructure.
+      - name: Upload GitHub Actions artifact for the Develocity build scan
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        if: "${{ !cancelled() }}"
+        with:
+          name: build-scan-data-${{ matrix.rdbms }}
+          path: ~/.gradle/build-scan-data
+      - name: Upload test reports (if Gradle failed)
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        if: failure()
+        with:
+          name: test-reports-java11-${{ matrix.rdbms }}
+          path: |
+            ./**/target/reports/tests/
+      - name: Omit produced artifacts from build cache
+        run: ./ci/before-cache.sh
+
   # Static code analysis check
   format_checks:
     permissions:
diff --git a/ci/build.sh b/ci/build.sh
index caa70a93275d..3e9e54553baf 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -21,43 +21,41 @@ elif [ "$RDBMS" == "edb" ] || [ "$RDBMS" == "edb_13" ]; then
 elif [ "$RDBMS" == "oracle" ]; then
   goal="-Pdb=oracle_ci"
 elif [ "$RDBMS" == "oracle_xe" ] || [ "$RDBMS" == "oracle_21" ]; then
-  # I have no idea why, but these tests don't seem to work on CI...
   goal="-Pdb=oracle_xe_ci"
 elif [ "$RDBMS" == "oracle_atps_tls" ]; then
   echo "Managing Oracle Autonomous Database..."
   export INFO=$(curl -s -k -L -X GET "https://api.atlas-controller.oraclecloud.com/ords/atlas/admin/database?type=autonomous&hostname=`hostname`" -H 'accept: application/json')
   export HOST=$(echo $INFO | jq -r '.database' | jq -r '.host')
   export SERVICE=$(echo $INFO | jq -r '.database' | jq -r '.service')
-  # I have no idea why, but these tests don't seem to work on CI...
   goal="-Pdb=oracle_cloud_autonomous_tls -DrunID=$RUNID -DdbHost=$HOST -DdbService=$SERVICE"
 elif [ "$RDBMS" == "oracle_atps" ]; then
   echo "Managing Oracle Autonomous Database..."
   export INFO=$(curl -s -k -L -X GET "https://api.atlas-controller.oraclecloud.com/ords/atlas/admin/database?type=autonomous2&hostname=`hostname`" -H 'accept: application/json')
   export HOST=$(echo $INFO | jq -r '.database' | jq -r '.host')
   export SERVICE=$(echo $INFO | jq -r '.database' | jq -r '.service')
-  # I have no idea why, but these tests don't seem to work on CI...
   goal="-Pdb=oracle_cloud_autonomous -DrunID=$RUNID -DdbHost=$HOST -DdbService=$SERVICE"
 elif [ "$RDBMS" == "oracle_db19c" ]; then
   echo "Managing Oracle Database 19c..."
   export INFO=$(curl -s -k -L -X GET "https://api.atlas-controller.oraclecloud.com/ords/atlas/admin/database?type=db19c&hostname=`hostname`" -H 'accept: application/json')
   export HOST=$(echo $INFO | jq -r '.database' | jq -r '.host')
   export SERVICE=$(echo $INFO | jq -r '.database' | jq -r '.service')
-  # I have no idea why, but these tests don't seem to work on CI...
   goal="-Pdb=oracle_cloud_db19c -DrunID=$RUNID -DdbHost=$HOST -DdbService=$SERVICE"
 elif [ "$RDBMS" == "oracle_db21c" ]; then
   echo "Managing Oracle Database 21c..."
   export INFO=$(curl -s -k -L -X GET "https://api.atlas-controller.oraclecloud.com/ords/atlas/admin/database?type=db21c&hostname=`hostname`" -H 'accept: application/json')
   export HOST=$(echo $INFO | jq -r '.database' | jq -r '.host')
   export SERVICE=$(echo $INFO | jq -r '.database' | jq -r '.service')
-  # I have no idea why, but these tests don't seem to work on CI...
   goal="-Pdb=oracle_cloud_db21c -DrunID=$RUNID -DdbHost=$HOST -DdbService=$SERVICE"
 elif [ "$RDBMS" == "oracle_db23c" ]; then
   echo "Managing Oracle Database 23c..."
   export INFO=$(curl -s -k -L -X GET "https://api.atlas-controller.oraclecloud.com/ords/atlas/admin/database?type=db23c&hostname=`hostname`" -H 'accept: application/json')
   export HOST=$(echo $INFO | jq -r '.database' | jq -r '.host')
   export SERVICE=$(echo $INFO | jq -r '.database' | jq -r '.service')
-  # I have no idea why, but these tests don't seem to work on CI...
   goal="-Pdb=oracle_cloud_db23c -DrunID=$RUNID -DdbHost=$HOST -DdbService=$SERVICE"
+# OTP
+elif [ "$RDBMS" == "autonomous-transaction-processing-serverless" ] || [ "$RDBMS" == "base-database-service-19c" ] || [ "$RDBMS" == "base-database-service-21c" ] || [ "$RDBMS" == "base-database-service-23ai" ]; then
+  echo "Managing OTP Database..."
+  goal="-Pdb=oracle_test_pilot_database -DrunID=$RUNID -DdbPassword=$TESTPILOT_PASSWORD -DdbConnectionStringSuffix=$TESTPILOT_CONNECTION_STRING_SUFFIX"
 elif [ "$RDBMS" == "db2" ] || [ "$RDBMS" == "db2_11_5" ]; then
   goal="-Pdb=db2_ci"
 elif [ "$RDBMS" == "mssql" ] || [ "$RDBMS" == "mssql_2017" ]; then
diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/datasource/DataSourceTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/datasource/DataSourceTest.java
index 4dca9176791d..a4f75b5c769d 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/datasource/DataSourceTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/datasource/DataSourceTest.java
@@ -36,7 +36,7 @@ void test(EntityManagerFactoryScope scope) {
 		scope.getEntityManagerFactory();
 		LogInspectionHelper.clearAllListeners( ConnectionInfoLogger.INSTANCE );
 		Dialect dialect = scope.getDialect();
-		assertTrue( dialect instanceof OracleDialect od && od.isAutonomous()
+		assertTrue( dialect instanceof OracleDialect
 					|| dialect instanceof DB2Dialect
 					|| dialect instanceof InformixDialect // Informix metadata does not include the URL
 					|| listener.seen );
diff --git a/local-build-plugins/src/main/groovy/local.databases.gradle b/local-build-plugins/src/main/groovy/local.databases.gradle
index 57bbda2dce3d..4d02861db6fe 100644
--- a/local-build-plugins/src/main/groovy/local.databases.gradle
+++ b/local-build-plugins/src/main/groovy/local.databases.gradle
@@ -9,6 +9,8 @@ ext {
     db = project.getProperty('db')
     dbHost = System.getProperty( 'dbHost', 'localhost' )
     dbService = System.getProperty( 'dbService', '' )
+    dbPassword = System.getProperty( 'dbPassword', '' ).replace('"', '')
+    dbConnectionStringSuffix = System.getProperty( 'dbConnectionStringSuffix', '' ).replace('"', '')
     runID = System.getProperty( 'runID', '' )
 
     dbBundle = [
@@ -288,6 +290,15 @@ ext {
 //                        'jdbc.datasource' : 'oracle.jdbc.datasource.impl.OracleDataSource',
                     'connection.init_sql' : ''
             ],
+            oracle_test_pilot_database: [
+                    'db.dialect' : 'org.hibernate.dialect.OracleDialect',
+                    'jdbc.driver': 'oracle.jdbc.OracleDriver',
+                    'jdbc.user'  : 'hibernate_orm_test_' + runID,
+                    'jdbc.pass'  : dbPassword,
+                    'jdbc.url'   : 'jdbc:oracle:thin:@' + dbConnectionStringSuffix + '?oracle.jdbc.enableQueryResultCache=false',
+                    'jdbc.datasource' : 'oracle.jdbc.OracleDriver',
+                    'connection.init_sql' : ''
+            ],
             mssql : [
                     'db.dialect' : 'org.hibernate.dialect.SQLServerDialect',
                     'jdbc.driver': 'com.microsoft.sqlserver.jdbc.SQLServerDriver',