G
George Potemkin
Guest
>> When online backup should scan the free cluster chains? > > That's Rich's problem! 
I guess Rich has a solution: Object Cluster List Block (a.k.a. "Cluster List Block", CLISTBLK, OBJ_CLIST_BLK). It's a bk_type 16: CLISTBLK: 0040 nextBlock: 0x0000000000000000 0 prevBlock: 0x0000000000000000 0 numClusters: 0x00000000 0 clusterStart: 0x0000000000000000 0 lastDbkey: 0x0000000000000000 0 clist: They exist in database but they are not used. I guess the aim was to store in these blocks the list of the cluster's addresses. Not only for free cluster chain but for any database objects. If Cluster List Blocks would be implemented then dbanalys or probkup would not need to scan the chains (except for verification). Dbpr/13/3 shows the list of 19 block types. 4 of them never existed, another 4 types were never used. In other words some ideas were not implemented [due to ...].
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I guess Rich has a solution: Object Cluster List Block (a.k.a. "Cluster List Block", CLISTBLK, OBJ_CLIST_BLK). It's a bk_type 16: CLISTBLK: 0040 nextBlock: 0x0000000000000000 0 prevBlock: 0x0000000000000000 0 numClusters: 0x00000000 0 clusterStart: 0x0000000000000000 0 lastDbkey: 0x0000000000000000 0 clist: They exist in database but they are not used. I guess the aim was to store in these blocks the list of the cluster's addresses. Not only for free cluster chain but for any database objects. If Cluster List Blocks would be implemented then dbanalys or probkup would not need to scan the chains (except for verification). Dbpr/13/3 shows the list of 19 block types. 4 of them never existed, another 4 types were never used. In other words some ideas were not implemented [due to ...].Continue reading...