diff --git a/backend/src/infrastructure/oracle/client.py b/backend/src/infrastructure/oracle/client.py
index 536b29f..ccf07b5 100644
--- a/backend/src/infrastructure/oracle/client.py
+++ b/backend/src/infrastructure/oracle/client.py
@@ -17,24 +17,29 @@ class OracleClient:
 
     def connect(self) -> None:
         try:
+            test_conn = oracledb.connect(
+                user=self.user,
+                password=self.password,
+                dsn=self.dsn,
+            )
+            test_conn.ping()
+            test_conn.close()
+
             self._pool = oracledb.create_pool(
                 user=self.user,
                 password=self.password,
                 dsn=self.dsn,
                 min=1,
-                max=20,
-                increment=5,
-                timeout=30,
-                wait_timeout=10,
-                getmode=oracledb.POOL_GETMODE_TIMEDWAIT,
+                max=10,
+                increment=1,
             )
             self._connected = True
-            logger.info("Pool Oracle conectado com sucesso")
+            logger.info(f"Pool Oracle conectado: {self.dsn}")
         except oracledb.Error as e:
-            logger.error(f"Oracle database error: {e}", exc_info=True)
+            logger.error(f"Oracle database error: {e}")
             self._connected = False
         except Exception as e:
-            logger.error(f"Oracle connection error: {e}", exc_info=True)
+            logger.error(f"Oracle connection error: {e}")
             self._connected = False
 
     def close(self) -> None:
diff --git a/backend/src/interface/api/app.py b/backend/src/interface/api/app.py
index 073bd1b..9ea2eff 100644
--- a/backend/src/interface/api/app.py
+++ b/backend/src/interface/api/app.py
@@ -32,12 +32,20 @@ async def carregar_ranking_do_oracle() -> int:
             if total == 0:
                 return []
 
-            consultores = ranking_oracle_repo.buscar_paginado(page=1, size=total)
+            consultores = []
+            batch_size = 10000
+            total_pages = (total + batch_size - 1) // batch_size
+            logger.info(f"Carregando {total} consultores do Oracle em {total_pages} batches...")
+
+            for page in range(1, total_pages + 1):
+                batch = ranking_oracle_repo.buscar_paginado(page=page, size=batch_size)
+                consultores.extend(batch)
+
             return consultores
 
         consultores = await asyncio.wait_for(
             asyncio.get_event_loop().run_in_executor(None, _sync_load),
-            timeout=30.0
+            timeout=300.0
         )
 
         if not consultores:
@@ -83,16 +91,8 @@ async def lifespan(app: FastAPI):
 
     try:
         if oracle_client:
-            def _connect_oracle():
-                oracle_client.connect()
-                return oracle_client.is_connected
-
-            connected = await asyncio.wait_for(
-                asyncio.get_event_loop().run_in_executor(None, _connect_oracle),
-                timeout=10.0
-            )
-
-            if connected:
+            oracle_client.connect()
+            if oracle_client.is_connected:
                 logger.info("Conectado ao Oracle")
                 total = await carregar_ranking_do_oracle()
                 if total > 0:
@@ -100,9 +100,7 @@ async def lifespan(app: FastAPI):
                 else:
                     logger.info("Ranking vazio no Oracle - aguardando processamento")
             else:
-                logger.warning("Não foi possível conectar ao Oracle - ranking será carregado do ES")
-    except asyncio.TimeoutError:
-        logger.warning("Timeout ao conectar ao Oracle - ranking será carregado do ES")
+                logger.warning("Não foi possível conectar ao Oracle")
     except Exception as e:
         logger.warning(f"Erro ao inicializar Oracle: {e}")
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 7929e19..7b8977e 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -4,6 +4,9 @@ services:
     build:
       context: ./backend
       dockerfile: Dockerfile
+    depends_on:
+      oracle18c:
+        condition: service_healthy
     ports:
       - "8010:8000"
     env_file:
@@ -45,7 +48,7 @@ services:
     restart: unless-stopped
     
   oracle18c:
-      container_name: mqapilc_oracle18c
+      container_name: oracle18c
       image: gvenzl/oracle-xe:18-slim
       environment:
         - ORACLE_PASSWORD=local123