After you create a dblink today found an interesting phenomenon, after the implementation of the select statement, if the query to the data will have affairs, can not find any data is not, embodied PLSQL inside the commit and rollback button will light, worried will produce lock table and the like, so Baidu relevant information, the big brother very well written Oracle database link to query the transaction will open it? Stay retrospectively.
The situation is not shown in the query to the data:
Figure query to the data of the problem:
