1. Establishes the operating environment by using the configuration parameters located in the configuration file ( Integration Server_directory \instances\instance_name\config\server.cnf).

2. Initializes processes that perform internal management.

3. Loads information about all the enabled packages and their services that reside in the Integration Server_directory \instances\instance_name\packages directory. If a package depends on other packages, the server loads the prerequisite packages first. The server does not load disabled packages.

4. Executes the startup services for each loaded package.

5. Initializes the guaranteed delivery engine. The server checks the job store for pending guaranteed delivery transactions. It retries the pending transactions as the guaranteed delivery configuration settings specify. For more information, refer to Configuring Guaranteed Delivery.

6. Schedules internal system tasks.