Oracle E-Business Suite Schema:
Type 1. Schemas that exist in every Oracle database - SYS, SYSTEM.
Three passwords are especially significant in Oracle EBS schema usage, so should be chosen with particular care:
Installation process automatically registers Oracle EBS ORACLE schemas.
Register an ORACLE schema with Oracle EBS, if you create a custom application using Oracle Application Object Library.
Refer Document 1577707.1, "Creating a Custom Application in Oracle E-Business Suite Release 12.2."
Add in custom initialization SQL code to be executed when a database session starts up or when it is re-initialized.
In addition, concurrent programs and concurrent managers can be assigned to resource consumer groups.
Type 1. Schemas that exist in every Oracle database - SYS, SYSTEM.
Type 2. A small set of critical core schemas used by shared components of Oracle E-Business Suite - APPLSYSPUB, APPLSYS, APPS, APPS_NE.
APPYSYSPUB schema:- It is public account, and has only Read-Only privileges on a few tables and views for signing on to Applications.
- The password for this account can be seen from the OS in the environment variable or logical GWYUID.
- It was pointless to change it before the security patch that allowed the APPLSYSPUB password to be encrypted.
- Warning: The APPLSYSPUB password is unique in that it must be maintained as an uppercase password. This means that if you opt to change the APPLSYSPUB password in Oracle Database 11g, you must enter the new password in all uppercase to preserve system functionality.
- Oracle recommend that the APPLSYSPUB password should be changed on all Release 12.x systems, using either AFPASSWD or FNDCPASS. AutoConfig should be run after changing the password, to synchronize all the application tier files.
4. A set of schemas that belong to optional database features or third party products.
These fall into three sub-categories:
a. Schemas that are both used by and patched with Oracle EBS - CTXSYS.
b. Schemas that are used by Oracle EBS but patched only with the database - MDSYS, ORDSYS.
Schemas that are not used by Oracle EBS - SCOTT.
All these types of schema are used during runtime operations of Oracle E-Business Suite.
The schemas of types 2, 3 and 4-1 above are accessed during initial installation and patching.
Note: None of the Oracle EBS schemas relate to a particular Oracle EBS user. The Oracle database schemas and passwords are used to connect to the database, while application usernames and passwords are used to access Oracle EBS.
Three passwords are especially significant in Oracle EBS schema usage, so should be chosen with particular care:
1. A password for APPLSYSPUB (also known as the GATEWAY user).
2. A password shared between APPLSYS, APPS, and APPS_NE.
3. A password for all of the product-specific base schemas (type 3).
Installation process automatically registers Oracle EBS ORACLE schemas.
Register an ORACLE schema with Oracle EBS, if you create a custom application using Oracle Application Object Library.
Refer Document 1577707.1, "Creating a Custom Application in Oracle E-Business Suite Release 12.2."
Add in custom initialization SQL code to be executed when a database session starts up or when it is re-initialized.
Code is executed by FND_GLOBAL.INITIALIZE and APPS_INITIALIZE immediately after initializing global variables, profiles, and the contents of client_info on session startup.
Using the profile option Initialization SQL Statement - Custom, you can add sitespecific initialization code, such as optimizer settings.
Oracle EBS allows the system administrator to assign individual Oracle EBS users to resource consumer groups. In addition, concurrent programs and concurrent managers can be assigned to resource consumer groups.
Note: These resource consumer groups apply to CPU resources only.
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