Table not visible to other users

This is probably a painful newbie question (PNQ). I have worked with Oracle as a user but am not an expert by any stretch.

I have inherited an Oracle database and I am going to need to make some changes to it.

One thing I need to do is add a table. I have three accounts, roles, for this database which were set up by the previous admin; "owner",
"admin", and "read". I set up a Perl script to talk to Oracle and
create and populate the table, from the "owner" account. No apparent problem, the table was created and populated with the correct data. (The changes were committed, I re-connected later to verify this.)

The "read" account is the one which actually runs the live application. When I try to select from the new table from the "read" account, Oracle tells me that the table does not exist.

As far as I know, the two accounts use the same default tablespace, I am not sure how to check that. They both see a set of 20 tables used to run the application, and these tables are all in the same tablespace. The new table is created within that same tablespace.

This is hard to verify because the "read" account also does not see the table "user_tables". When I pull up table_space_name from user_tables from the "owner" account, the new table shows the same tablespace as the other tables.

They are both looking at the same tables, if I make a change to one of the tables that they both see, from "owner", the change is visible to
"read".

I thought this might have something to do with permission levels but I granted "select" privilege on the test table to "read", the permission was granted and I committed, but the table is still not visible.

This is probably something simple but I am not sure where to start.

Oh and just to add insult to injury, I do not have the password for the "dba" account, which apparently is the default highest-permission level account on the database.

Any suggestions would be greatly appreciated.

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