diff --git a/spring-cloud-task-core/src/main/resources/org/springframework/cloud/task/migration/2.2.x/migration-oracle.sql b/spring-cloud-task-core/src/main/resources/org/springframework/cloud/task/migration/2.2.x/migration-oracle.sql
new file mode 100644
index 00000000..8c06abaf
--- /dev/null
+++ b/spring-cloud-task-core/src/main/resources/org/springframework/cloud/task/migration/2.2.x/migration-oracle.sql
@@ -0,0 +1,2 @@
+alter table TASK_LOCK MODIFY LOCK_KEY VARCHAR2(36);
+alter table TASK_LOCK MODIFY CLIENT_ID VARCHAR2(36);
diff --git a/spring-cloud-task-core/src/main/resources/org/springframework/cloud/task/schema-oracle10g.sql b/spring-cloud-task-core/src/main/resources/org/springframework/cloud/task/schema-oracle10g.sql
index 4b4e95b0..ea8c4185 100644
--- a/spring-cloud-task-core/src/main/resources/org/springframework/cloud/task/schema-oracle10g.sql
+++ b/spring-cloud-task-core/src/main/resources/org/springframework/cloud/task/schema-oracle10g.sql
@@ -29,9 +29,9 @@ CREATE TABLE TASK_TASK_BATCH (
 CREATE SEQUENCE TASK_SEQ START WITH 0 MINVALUE 0 MAXVALUE 9223372036854775807 NOCACHE NOCYCLE;
 
 CREATE TABLE TASK_LOCK  (
-	LOCK_KEY CHAR(36) NOT NULL,
+	LOCK_KEY VARCHAR2(36) NOT NULL,
 	REGION VARCHAR2(100) NOT NULL,
-	CLIENT_ID CHAR(36),
+	CLIENT_ID VARCHAR2(36),
 	CREATED_DATE TIMESTAMP NOT NULL,
 	constraint LOCK_PK primary key (LOCK_KEY, REGION)
 );