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HADR: Ability to take incremental backups on either host and maintain the incremental chain for restore
In an HADR environment it is not possible to restore / recover the database with backups which are taken from both sites of the HADR cluster (after takeovers). You have to use the backups from the one site or from the other site. You can't mix the...
BACKUP INCLUDE LOGS should add logs to backup image as soon as they are closed
Today the log files get added to backup image at end of backup, which could easily cause that log files need to be retrieved from archive that they can be added to backup image. Adding the log files as soon as possible would avoid time consuming a...
Online restore of a range partition. Db2 takes a lock on the whole table during the restore.
I have a range partition table with NO global indexes. The partitions have their own tablespaces. Db2 takes a Z lock on the whole table when restoring a single partition.We thought that we could restore a partition online and that all the other pa...
Improved Db2 backup thread (db2bm and db2med) binding/distribution on NUMA systems
On a large NUMA systems with a very fast storage and a fast backup target memory affinity might affect backup time as well as the overall system performance during the activity. Currently, with the Db2's automatic thread NUMA binding (DB2_RESOURCE...
db2adutl to report the size of objects stored on TSM
db2adutl to report the size of objects stored on TSM Determining the size of a DB2 backup object https://www.ibm.com/support/pages/determining-size-db2-backup-object describes a workaround for the missing functionality in db2adutl. It should be ab...
BACKUP command option: ALL TABLESPACES EXCEPT (tablespace-name)
Customer has a huge number of tablespaces (f.e. 10000) and wants to do a tablespace backup of all tablespaces except of for example 3 tablespaces.
We would like to do the following:
$ db2 BACKUP DB myDB ALL TABLESPACES EXCEPT (unnecessary...
In case of a mistakenly deletion of files in/below the instance home directory of Db2 it should be possible to restore [only] these files/directories etc. At the moment if files/directories are mistakenly deleted, a complete database restore would...
Allow to exclude index pages from backup - recreate after restore
Db2 backup is saving all database objects regardless if the objects (especially indexes) could be re-created, because the objects contain just redundant data. Db2 already provides the DBM CFG parameter INDEXREC which configures when an invalid ind...
Usually our Db2 backups to TSM are performed using parallelism, sometimes up to parallelism 10.
Occasionally we restore a Db2 system in another operating center from where we have no access to the TSM server.
In the source environment the Db2 ba...
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