I have created an Oracle DB.
With the user SYSTEM I created a tablespace and another user with CONNET and DBA roles, associated with this tablespace, called PP. Then with this user I have created some tables.
Well, when i do a connection to the database with the user PP in SQL Developer it shows me only the tables that I create with this user. Thats ok.
The problems comes when I do a connection with other application, using aswell the same user PP. It show me the tables I've created, and some more, rather a lot of them.
Examples:
ALL$AW_CUBE_ENABLED_HIERCOMBO
APEX_APPLICATION_PAGE_IR_COMP
REPCAT$_RESOL_STATS_CONTROL
SCHEDULER_JOB_ARGS_TBL
WWV_FLOW_AUTHORIZED_URLS
....
I suppose this tables are from system or sys user.
Why can I see them with my user PP?
How can I do to hide them?
Thanks a lot.
Related
I'm trying to copy data from Oracle database table to MS SQL database using Azure Data Factory pipeline.
I have installed oracle locally and using the SYSTEM user, I have created couple of tables in oracle as seen in the screenshot below:
After connecting this local oracle instance with Azure Data Factory via Self Hosted Runtime, I am unable to see the names of these tables in the dropdown of Table names list while creating a dataset for one of these tables. Below are the screenshots of what I am trying to achieve:
But when I search for these tables SPENDREPORT and SPENDREPORTDETAILS, they are not found in this dropdown, as shown in the screenshot below. Any clues as to how I can solve this?
As commented by Justin Cave and also as per Oracle official documentation You must not create any tables in the SYS schema.
•SYS
This account can perform all administrative functions. All base (underlying) tables and views for the database data dictionary are stored in the SYS schema. These base tables and views are critical for the operation of Oracle Database. To maintain the integrity of the data dictionary, tables in the SYS schema are manipulated only by the database. They should never be modified by any user or database administrator. You must not create any tables in the SYS schema.
The SYS user is granted the SYSDBA privilege, which enables a user to perform high-level administrative tasks such as backup and recovery.
• SYSTEM
This account can perform all administrative functions except the following:
• Backup and recovery
• Database upgrade
You should also try to clear Data factory cache and then refresh Table name field.
I want to know what is the difference between the following two statements in oracle:
GRANT DBA TO Jack
GRANT ALL PRIVILEGES TO Jack
I advise you not to try providing dba and NEVER provide ALL PRIVILEDGES to any user, because such thing should be done only by experienced developers.
Usually there is only ONE user who is provided DBA role.
As per oracle documentation:
When oracle database is installed, there are two admin roles created:
1. SYS 2. SYSTEM
An SYS role can access internal data dictionary tables of oracle database.
All of the base tables and views for the database data dictionary are stored in the schema SYS. These base tables and views are critical for the operation of Oracle Database. To maintain the integrity of the data dictionary, tables in the SYS schema are manipulated only by the database.
If you flirted with any internal sys tables, you may face license cancellation
The SYSTEM username is used to create additional tables and views that display administrative information, and internal tables and views used by various Oracle Database options and tools. Never use the SYSTEM schema to store tables of interest to non-administrative users.
The DBA role does not include the SYSDBA or SYSOPER system privileges. These are special administrative privileges that allow an administrator to perform basic database administration tasks, such as creating the database and instance startup and shutdown.
Here GRANT ALL PRIVILEGES are provided to user on particular object, even system object, and this does not includes sys and system privilege, you can do any action on such object, this is why you should avoid using ALL PRIVILEGES.
An application needs to access various Oracle database. Some databases have tables in Schemas, some don't - there's no control over this.
If a database has a schema in use, the applicable won't work unless the user enters a schema. I'd like it to be able determine via a SQL query if a schema is required to access the tables so the user can be alerted to this.
I'm aware of the question - How do I obtain a list of schemas that an Oracle user has access to - but that only tells me what schema's can be accessed, not if use of the schema is required to access tables.
Is there an SQL query to one of the system tables that can do this with that user's rights?
Note: The application only has login credentials and doesn't know any table details.
Hope that's clear. Thanks.
Question is confusing. For most part in Oracle, you can consider LOGIN == USER == SCHEMA. When you login into your database with your user, you are able to see and access all objects in that user's schema.
Objects in other schemas (on same database server) can be accesed by SCHEMA2.TABLE1 if connected user has privileges to acces table (there are different privileges...). As already stated in some comments, you do not need to prefix table if synonym exists. Your user can access even tables on some remote server if exists appropriate database link.
I have created Global Temporary table in oracle and inserting the data through my application, and its working fine for me when i connect to database with "system" as the username. Where as i have created one more user in the database with "user1" and have given "Grant all" privileges to this user also. Now when am connecting to database with "User1" as the username and running the application, the data is not inserting into Global temporary table.
But when i try to insert data from sql developer tool its inserting.
With system user through application also working, whereas with user1 its not inserting. Am not getting whats behind going as am not that much DB expert.
Please have any idea suggest me. I have all privileges also. Thanks in advance.
Fist, the table MUST be in other schema than SYS or SYSTEM. Create it on "User1".
Second, you must be sure that you select from the same table. Prefix the table with the schema when inserting and also when reading.
Also be sure that you are not in the situation of table created with ON COMMIT DELETE ROWS and some AUTOCOMMIT ON in Sql Developer.
What are the differences between the Oracle SYS and SYSTEM built in accounts?
Edit: Apart from 3 letters!
SYS owns the oracle data dictionary. Every object in the database (tables, views, packages, procedures, etc. ) all have a single owner. For the database dictionary, and a whole lot of special tables (performance views and the like) are all owned by the SYS user.
The SYSTEM user is supposed to be the master DBA user, with access to all of these object. This reflects an early, and long time, Oracle security design philosophy. You build the application using one user, then create a second with access (select, update, delete) but not drop privileges. This gives you a "super-user" access to your schema without being able to destroy it accidentally. Over the years, thing have been added to the SYSTEM account that may have needed to be in the SYS account. But very few people want to give out access to their SYS account if they don't have to.
SYS can connect AS SYSDBA, SYSTEM cannot.
SYSDBA privilege is required to perform certain administrative tasks, like CREATE DATABASEand DROP DATABASE, and query any tables despite GRANT'ed permissions on them.
In fact, whenever you connect as SYSDBA, you become a SYS.