StorageTek 312564001 Benutzerhandbuch
78
DB2 Manager User Guide
StorageTek
Proprietary
• The contents of the existing table should be unloaded, and loaded into
the new table. This will create an exact copy of the original table, with the
modifications described above.
modifications described above.
• The original table should be dropped from DB2.
• A view should be created of the new table. The view must have the same
• A view should be created of the new table. The view must have the same
name as that of the original table, and should be defined as follows:
CREATE VIEW dbname.tabname1
AS SELECT
field1,
field2,
...
fieldn
FROM
dbname.tabname2
where:
tabname1 is the name of the existing table
tabname2 is the name of the new table
field1 is the first column in the existing table
fieldn is the last column in the existing table
• All views on the existing table should be re-created as originally defined.
Following completion of migrated table enablement processing, a table will be
eligible for processing by the DB2 Manager table migration utility.
Following completion of migrated table enablement processing, a table will be
eligible for processing by the DB2 Manager table migration utility.
No other implementation requirements are needed in order to enable
migration and retrieval processing for a DB2 table. In particular, no
modifications to existing application programs issuing SQL commands will be
required. DB2 Manager will automatically enable retrieval, deletion and
update of rows which have been migrated to an Archive Manager database.
migration and retrieval processing for a DB2 table. In particular, no
modifications to existing application programs issuing SQL commands will be
required. DB2 Manager will automatically enable retrieval, deletion and
update of rows which have been migrated to an Archive Manager database.
Disabling activities
If it is required to disable DB2 Manager support for a DB2 table which had
previously been enabled for row migration by DB2 Manager, the following
actions must be performed:
previously been enabled for row migration by DB2 Manager, the following
actions must be performed:
• Before performing any activities to disable DB2 Manager support for
a DB2 table, all migrated rows must be recalled to the table using
the DB2 Manager row retrieval utility OTDBP120. Failure to perform
this step prior to continuing with disabling processing will mean that data
in migrated rows will no longer be accessible and may be permanently
lost. Any attempt to access these rows from an SQL application will
result in an SQL error.
the DB2 Manager row retrieval utility OTDBP120. Failure to perform
this step prior to continuing with disabling processing will mean that data
in migrated rows will no longer be accessible and may be permanently
lost. Any attempt to access these rows from an SQL application will
result in an SQL error.
• Views created for the migration-enabled table should be dropped.
• A new partitioned tablespace must be created to hold a copy of the table
• A new partitioned tablespace must be created to hold a copy of the table
being disabled for migration processing. This should have one less
partition than the number of partitions in the tablespace containing the
partition than the number of partitions in the tablespace containing the