diff --git a/providers/jdbc/shedlock-provider-jdbc-template/src/main/java/net/javacrumbs/shedlock/provider/jdbctemplate/OracleServerTimeStatementsSource.java b/providers/jdbc/shedlock-provider-jdbc-template/src/main/java/net/javacrumbs/shedlock/provider/jdbctemplate/OracleServerTimeStatementsSource.java
index a83843a33..4a8ac384d 100644
--- a/providers/jdbc/shedlock-provider-jdbc-template/src/main/java/net/javacrumbs/shedlock/provider/jdbctemplate/OracleServerTimeStatementsSource.java
+++ b/providers/jdbc/shedlock-provider-jdbc-template/src/main/java/net/javacrumbs/shedlock/provider/jdbctemplate/OracleServerTimeStatementsSource.java
@@ -32,7 +32,7 @@ class OracleServerTimeStatementsSource extends SqlStatementsSource {
 
     @Override
     String getInsertStatement() {
-        return "INSERT INTO " + tableName() + "(" + name() + ", " + lockUntil() + ", " + lockedAt() + ", " + lockedBy() + ") VALUES(:name, " + lockAtMostFor + ", " + now + ", :lockedBy)";
+        return "MERGE INTO " + tableName() + " USING (SELECT 1 FROM dual) ON (" + name() + " = :name) WHEN MATCHED THEN UPDATE SET " + lockUntil() + " = " + lockAtMostFor + ", " + lockedAt() + " = " + now + ", " + lockedBy() + " = :lockedBy WHERE " + name() + " = :name AND " + lockUntil() + " <= " + now + " WHEN NOT MATCHED THEN INSERT(" + name() + ", " + lockUntil() + ", " + lockedAt() + ", " + lockedBy() + ") VALUES(:name, " + lockAtMostFor + ", " + now + ", :lockedBy)";
     }
 
     @Override