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IBM
000-8697
Manual De Usuario
IBM 000-8697 Manual De Usuario
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2
Chapter
System Architecture
In This Chapter . . . . . . . . . . . . . . . . . . . .
2-7
Initialization . . . . . . . . . . . . . . . . . . . . .
2-7
Initialization Commands
. . . . . . . . . . . . . . .
2-8
Shared Memory Commands . . . . . . . . . . . . .
2-9
Disk Space Commands . . . . . . . . . . . . . . .
2-10
What Happens During Shared-Memory Initialization
. . . . .
2-10
Shared-Memory Initialization Procedure. . . . . . . . .
2-11
Step 1: Calculate Configuration Values . . . . . . . . .
2-11
Step 2: Create Shared Memory . . . . . . . . . . . .
2-12
Step 3: Attach to Shared Memory . . . . . . . . . . .
2-12
Step 4: Initialize Shared Memory Structure . . . . . . . .
2-12
Step 5: Wake Parent Process . . . . . . . . . . . . .
2-13
Steps 6 and 7: Initiate Fast Recovery and First Checkpoint
. .
2-13
Step 8: Drop Temporary Tables (Optional) . . . . . . . .
2-13
Step 9: Document Configuration Changes . . . . . . . .
2-14
Step 10: Check for Forced Residency . . . . . . . . . .
2-14
Step 11: Begin Looping as Master Daemon . . . . . . . .
2-14
What Happens During Disk-Space Initialization . . . . . . .
2-14
Step 1: Calculate Configuration Values . . . . . . . . .
2-15
Step 2: Create OnLine Shared Memory . . . . . . . . .
2-16
Step 3: Attach to Shared Memory . . . . . . . . . . .
2-16
Step 4: Initialize Shared-Memory Structures
. . . . . . .
2-16
Step 5: Initialize Disk Space . . . . . . . . . . . . .
2-16
Step 6: Wake Parent tbinit Process . . . . . . . . . . .
2-17
Step 7: Initiate First Checkpoint . . . . . . . . . . . .
2-17
Step 8: Change to Quiescent Mode . . . . . . . . . . .
2-18
Step 9: Set Forced Residency . . . . . . . . . . . . .
2-18
Step 10: Loop as Master Daemon . . . . . . . . . . .
2-18
UNIX Kernel and Semaphore-Allocation Parameters . . . . . .
2-18
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