ORA-00911: invalid character

Summary:

Hi Everyone!

I am trying to retrieve a transaction. Below is the SQL Query

SELECT a.TRANSACTION_ID,b.TRANSACTION_ID, DBMS_LOB.SUBSTR(a.data_cache,2000),DBMS_LOB.SUBSTR(a.data_cache,2000,2001) 

FROM 

hrc_txn_data A, hrc_txn_header B 

where A.TRANSACTION_ID = B.TRANSACTION_ID 

and b.object_id in (Select 

GOAL_PLAN_ASSIGNMENT_ID from HRG_GOAL_PLN_ASSIGNMENTS where person_id = '300000010498800')

I am getting, ORA-00911: invalid character errorr. For me, query looks good. Am i missing anything here?

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):