The key types of concurrent managers in EBS are:
- Internal Concurrent Manager (ICM)
- Conflict Resolution Manager (CRM)
- Product Specific Managers
- Transaction Managers
The Internal and the Standard concurrent managers
Oracle System Administration predefines two managers for you:
The Internal Concurrent Manager, which functions as the "boss" of all the other managers.
The Internal Concurrent Manager starts up, verifies the status of, resets, and shuts down the individual managers.
The Internal Concurrent Manager also enforces program incompatibility rules by comparing program definitions for requested programs with those programs already running in an Oracle username designated as a logical database (i.e., an Oracle account where program incompatibility rules are enforced).
You cannot alter the definition of the Internal Concurrent Manager.
Conflict Resolution Manager (CRM)
- CRM enforces any incompatibility rules.
Product Specific Managers
- It includes inventory, MRP, PA and any user defined managers
- It supports synchronous request processing
- A small pool of server-side transaction manager processes service a large number of clients
- Ex. of this manager is approval of an order