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This e-mail is only intended for the person(s) to whom it is addressed and may contain confidential information. Unless stated to the contrary, any opinions or comments are personal to the writer and do not represent the official view of the company. If you have received this e-mail in error, please notify us immediately by reply e-mail and then delete this message from your system. Please do not copy it or use it for any purposes, or disclose its contents to any other person. Thank you for your co-operation. ************************************************************************** Dear All, I am investigating a TSM backup strategy for Oracle databases (online and offline database backups). We do not have TDP as an option yet so I need to back up using traditional TSM methods. I am interested to hear what arguments there are in favor and against using either TSM incremental or archive backup types to ensure recoverability of the database. Some of the issues are:- Oracle archived redo (transaction logs) need to be backed up regularly throughout the day, other database files generally are backed up once per day or less frequently. In case of restore, point in time restore of all Oracle data files is required to ensure consistency between Oracle database files. Larger databases may have read only files (Oracle readonly tablespaces) which do not need to be backed up as regularly as the remainder of the database but must be available to be restored in a point in time restore Many databases also interface with external files e.g. video clips, image files which must be consistent with the database for point in time restore. If the main database files are backed up less often e.g. weekly the required restore process may require restoring all database files to point in time e.g. to last weekly backup and then restoring all database redo logs backed up since up to the recovery time required. Looking at the ADSM-L archives, many people seem to use TSM archive backup for Oracle databases if they are not using TDP, but I'm not sure why a dsmc incremental wouldn't be just as good as long as the versioning parameters (VEREXISTS, VERDELETED) were set appropriately. Also what are the recommendations of storage pool configuration for backing up databases and associated files. TIA George
