To get data from another user?

Hi,
I am in "scott" user. I need to use the data from another user for example user "sys". i know the database name(i.e.user@database), but i dont know the password of that user.
I think by using dblink it is possible. If it is correct then Is there any other way for this? If dblink is not correct way then please reply the correct way.
Thanks & Regards,
Shyam

You only need to use a database link if the data is in another database instances.
If you want to query data in another users schema on the same database you just need to have rights to do so. You either need to have
select any table system privilage granted to the user (not recommended for security reasons)
be granted select privalage on the object from the user
be granted a role that has select privelges on the object you want to query.
If you log in as system to the database you can grant select on the object to scott
sql> grant select on <schema>.<table> to scott;
now logged in as scott you can select from the table
sql> select * from <schema>.<table>
where <schema> is the other user and <table> is the name of the table that you want to select from.

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When using the NDDE library, the CPU usage is high. As the NDDE library is third-party library, it is not supported here. I suggest you checking if the problem is caused by the NDDE library.
If you'd like to get data from another app. I suggest you could save the data in the dataBase, and then read it in another application if necessary.
If you have any other concern regarding this issue, please feel free to let me know.
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