NonStop SQL/MP Reference Manual

Table Of Contents
NonStop SQL/MP Reference Manual142115
C-62
ALTER Operation Effects on Timestamps
DML Operations You Can Start
DDL Operations
in Progress
SELECT
BROWSE
SELECT
SHARED
SELECT
EXCLUSIVE
DELETE/INSERT
UPDATE
ALTER
WITH SHARED
ACCESS
A
2
A
2
A
2
A
2
Timestamp change A1 Wait Wait Wait
No timestamp chg A A A A
CREATE
CONSTRAINT
Scan phase A A Wait Wait
Change timestamp A
1
Wait Wait Wait
CREATE INDEX
WITH SHARED
ACCESS
A
2
A
2
A
2
A
2
Scan phase A A Wait Wait
Change timestamp A
1
Wait Wait Wait
A Allowed
Wait Started operation waits for the operation in progress to complete. The waiting operation might also time
out.
1
DDL operation aborts the DML operation
2
Allowed except during commit phase
ALTER Operation
Timestamp
Updated
Timestamp
Unaffected
ALTER INDEX
ADD/DROP PARTITION X
RENAME X
File attributes X
ALTER TABLE
ADD COLUMN X
ADD/DROP PARTITION X
COLUMN HEADING X
File attributes X
RENAME X
Security attributes X
ALTER VIEW