diff --git a/roles/oracle-db-postinstall/tasks/main.yml b/roles/oracle-db-postinstall/tasks/main.yml
index 1b32261..ecebe41 100644
--- a/roles/oracle-db-postinstall/tasks/main.yml
+++ b/roles/oracle-db-postinstall/tasks/main.yml
@@ -10,11 +10,8 @@
     msg: "Prérequis non satisfaits : RAM >= 2GB"
   tags: prerequisites
 
-- name: Vérifier que Oracle est installé
-  ansible.builtin.stat:
-    path: "{{ oracle_home }}/bin/sqlplus"
-  register: oracle_installed
-  failed_when: not oracle_installed.stat.exists
+- name: Inclure les validations des chemins et fichiers
+  ansible.builtin.include_tasks: validations.yml
   tags: prerequisites
 
 # ---------------------------------------------------
diff --git a/roles/oracle-db-postinstall/tasks/validations.yml b/roles/oracle-db-postinstall/tasks/validations.yml
new file mode 100644
index 0000000..ac834c4
--- /dev/null
+++ b/roles/oracle-db-postinstall/tasks/validations.yml
@@ -0,0 +1,32 @@
+---
+#
+# Validations préalables pour le rôle oracle-db-postinstall
+#
+
+- name: Vérifier que le répertoire scripts_dir existe
+  ansible.builtin.stat:
+    path: "{{ scripts_dir }}"
+  register: scripts_dir_check
+  failed_when: not scripts_dir_check.stat.exists
+  tags: prerequisites
+
+- name: Vérifier que ORACLE_HOME est accessible
+  ansible.builtin.stat:
+    path: "{{ oracle_home }}"
+  register: oracle_home_check
+  failed_when: not oracle_home_check.stat.exists
+  tags: prerequisites
+
+- name: Vérifier que les binaires Oracle existent
+  ansible.builtin.stat:
+    path: "{{ oracle_home }}/bin/sqlplus"
+  register: sqlplus_check
+  failed_when: not sqlplus_check.stat.exists
+  tags: prerequisites
+
+- name: Vérifier que dbstart et dbshut existent
+  ansible.builtin.stat:
+    path: "{{ oracle_home }}/bin/dbstart"
+  register: dbstart_check
+  failed_when: not dbstart_check.stat.exists
+  tags: prerequisites
\ No newline at end of file
diff --git a/roles/oracle-db-postinstall/templates/cron_oracle_cleaner.j2 b/roles/oracle-db-postinstall/templates/cron_oracle_cleaner.j2
index 58f5ab3..dcd5a0d 100644
--- a/roles/oracle-db-postinstall/templates/cron_oracle_cleaner.j2
+++ b/roles/oracle-db-postinstall/templates/cron_oracle_cleaner.j2
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 export ORACLE_BASE={{ oracle_base }}
+export SCRIPTS_DIR={{ scripts_dir }}
 
 export ADMIN_DIR=${ORACLE_BASE}/admin
 export RDBMS_LOG_DIR=${ORACLE_BASE}/diag/rdbms
@@ -10,7 +11,7 @@ export LSNR_LOG_DIR=${ORACLE_BASE}/diag/tnslsnr
 export DAYS=3
 
 # Fichier log pour la date du jour
-LOG_DIR="/home/oracle/scripts/logs"
+LOG_DIR="${SCRIPTS_DIR}/logs"
 mkdir -p $LOG_DIR
 LOG_FILE="$LOG_DIR/clean_$(date +%Y%m%d).log"
 
diff --git a/roles/oracle-db-postinstall/templates/dbora.service.j2 b/roles/oracle-db-postinstall/templates/dbora.service.j2
index c652384..f50aa08 100644
--- a/roles/oracle-db-postinstall/templates/dbora.service.j2
+++ b/roles/oracle-db-postinstall/templates/dbora.service.j2
@@ -1,14 +1,22 @@
 [Unit]
-Description=Start Oracle Database
-After=multi-user.target
+Description=Oracle Database Startup Service
 After=network.target
+After=local-fs.target
+After=remote-fs.target
+Requires=network.target
 
 [Service]
-Type=simple
-ExecStart=/usr/bin/su - oracle -c "{{oracle_home}}/bin/dbstart {{oracle_home}}"
-ExecStop=/usr/bin/su - oracle -c "{{oracle_home}}/bin/dbshut {{oracle_home}}"
+Type=oneshot
+User=oracle
+Group=oinstall
+Environment=ORACLE_HOME={{ oracle_home }}
+Environment=ORACLE_BASE={{ oracle_base }}
+WorkingDirectory={{ oracle_base }}
+ExecStart={{ oracle_home }}/bin/dbstart {{ oracle_home }}
+ExecStop={{ oracle_home }}/bin/dbshut {{ oracle_home }}
 TimeoutSec=900
 RemainAfterExit=yes
+Restart=no
 
 [Install]
 WantedBy=multi-user.target