Initialization Steps

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Initialization Steps

Disk-space initialization always includes the initialization of shared memory. However, some activities that normally take place during shared-memory initialization, such as recording configuration changes, are not required during disk initialization because those activities are not relevant with a newly initialized disk.

Table 14 shows the main tasks completed during the two types of initialization. The following sections discuss each step.

Table 14. Initialization Steps
Shared-Memory Initialization	Disk Initialization
Process configuration file.	Process configuration file.
Create shared-memory segments.	Create shared-memory segments.
Initialize shared-memory structures.	Initialize shared-memory structures.
	Initialize disk space.
Start all required virtual processors.	Start all required virtual processors.
Make necessary conversions.
Initiate fast recovery.
Initiate a checkpoint.	Initiate a checkpoint.
Document configuration changes.
Update oncfg_servername.servernum file.	Update oncfg_servername.servernum file.
Change to quiescent mode.	Change to quiescent mode.
Drop temporary tblspaces (optional).
Set forced residency, if requested.	Set forced residency, if specified.
Change to online mode and return control to user.	Change to online mode and return control to user.
If the SMI tables are not current, update the tables.	Create sysmaster database that contains the SMI tables.
	Create the sysutils database.
Monitor maximum number of user connections at each checkpoint.	Monitor maximum number of user connections at each checkpoint.