Hibernate adding top 2 when I call stored procedure

When I am creating a nativeQuery and calling my stored procedure to update some table
Hibernate is add top 2 in between the call

code
Query q = em.createNativeQuery("Rx_ManageCacheData(?,?,?,?,?,?," +
"?,?,?,?,?,?," +
"?,?,?,?,?,?,?," +
"?,?,?,?,?,?," +
"?,?,?) ");

The above sql becomes

Rx_ManageCache top 2Data(
?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?
)

11297 [main] WARN org.hibernate.util.JDBCExceptionReporter - SQL Error: 156, SQLState: S0001
11297 [main] ERROR org.hibernate.util.JDBCExceptionReporter - Incorrect syntax near the keyword 'top'.
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException(AbstractEntityManagerImpl.java:614)
at org.hibernate.ejb.QueryImpl.getSingleResult(QueryImpl.java:128)
at com.venodebiz.middletier.rx.data.serviceimpl.RxDataServiceImpl.manageCachData(RxDataServiceImpl.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy18.manageCachData(Unknown Source)