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DBA_CLUSTERS
Description of all clusters in the databaseColumns ___________________________ INI_TRANS Initial number of transactions KEY_SIZE Estimated size of cluster key plus associated rows PCT_USED Minimum percentage of used space in a block CLUSTER_NAME Name of the cluster OWNER Owner of the cluster TABLESPACE_NAME Name of the tablespace containing the cluster SINGLE_TABLE Whether the cluster can contain only a single table PCT_FREE Minimum percentage of free space in a block INITIAL_EXTENT Size of the initial extent in bytes MAX_TRANS Maximum number of transactions BUFFER_POOL The default buffer pool to be used for cluster blocks CACHE Whether the cluster is to be cached in the buffer cache FREELISTS Number of process freelists allocated in this segment NEXT_EXTENT Size of secondary extents in bytes MIN_EXTENTS Minimum number of extents allowed in the segment INSTANCES The number of instances across which the cluster is to be scanned PCT_INCREASE Percentage increase in extent size FREELIST_GROUPS Number of freelist groups allocated in this segment AVG_BLOCKS_PER_KEY Average number of blocks containing rows with a given cluster key CLUSTER_TYPE Type of cluster: b-tree index or hash FUNCTION If a hash cluster, the hash function HASHKEYS If a hash cluster, the number of hash keys (hash buckets) DEGREE The number of threads per instance for scanning the cluster MAX_EXTENTS Maximum number of extents allowed in the segment
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