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 10 shows the main tasks completed during the two types of initialization. The following sections discuss each step.
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 SMI tables. |