diff --git a/doc/sql/snail_job_dm8.sql b/doc/sql/snail_job_dm8.sql
index e120fee32..ee0b432c9 100644
--- a/doc/sql/snail_job_dm8.sql
+++ b/doc/sql/snail_job_dm8.sql
@@ -357,7 +357,7 @@ COMMENT ON TABLE sj_server_node IS '服务器节点';
 -- sj_distributed_lock
 CREATE TABLE sj_distributed_lock
 (
-    name       varchar(64)                               NOT NULL PRIMARY KEY IDENTITY,
+    name       varchar(64)                               NOT NULL PRIMARY KEY,
     lock_until timestamp(3) DEFAULT CURRENT_TIMESTAMP(3) NOT NULL,
     locked_at  timestamp(3) DEFAULT CURRENT_TIMESTAMP(3) NOT NULL,
     locked_by  varchar(255)                              NULL,
diff --git a/snail-job-server/snail-job-server-common/src/main/java/com/aizuda/snailjob/server/common/lock/persistence/JdbcLockProvider.java b/snail-job-server/snail-job-server-common/src/main/java/com/aizuda/snailjob/server/common/lock/persistence/JdbcLockProvider.java
index 940930911..9ea8968ba 100644
--- a/snail-job-server/snail-job-server-common/src/main/java/com/aizuda/snailjob/server/common/lock/persistence/JdbcLockProvider.java
+++ b/snail-job-server/snail-job-server-common/src/main/java/com/aizuda/snailjob/server/common/lock/persistence/JdbcLockProvider.java
@@ -72,7 +72,7 @@ public class JdbcLockProvider implements LockStorage, Lifecycle {
             } catch (DuplicateKeyException | ConcurrencyFailureException | TransactionSystemException e) {
                 return false;
             } catch (DataIntegrityViolationException | BadSqlGrammarException | UncategorizedSQLException e) {
-                SnailJobLog.LOCAL.error("Unexpected exception. lockName:[{}]", lockConfig.getLockName(), e);
+                SnailJobLog.LOCAL.debug("Unexpected exception. lockName:[{}]", lockConfig.getLockName(), e);
                 return false;
             }
         }));