z/OS V1R6.0 DFSMS Access Method Services for Catalogs

LISTCAT Output||set. When using compressed VSAM data sets, REPRO should specify theREPLACE option to ensure that the correct statistics are calculated.COMP-USER-DATA-SIZE—The total length of data after compression. If the datalengths are too large to be presented in decimal, they are presented in hexadecimalformat.FREESPACE-%CI—Percentage of space to be left free in a control interval forsubsequent processing.FREESPACE-%CA—Percentage of control intervals to be left free in a control areafor subsequent processing.FREESPC—Actual number of bytes of free space in the total amount of spaceallocated to the data or index component. Free space in partially used controlintervals is not included in this statistic. Some of this space may not be accessibledue to the current amount of key compression that can be performed in the index.INDEX—This field appears only in an index entry. The fields under it describeactivity in the index component.ENTRIES/SECT—The number of entries in each section of entries in an indexrecord.HI-LEVEL-RBA—The RBA (relative byte address) of the highest-level indexrecord.LEVELS—The number of levels of records in the index. The number is 0 if norecords have been loaded into the key-sequenced data set to which the indexbelongs.SEQ-SET-RBA—The RBA (relative byte address), in decimal, of the firstsequence-set record. The sequence set can be separated from the index set bysome amount of RBA space.The remaining fields in the statistics group (except for the system timestamp field),are updated only when the data set is closed.EXCPS—EXCP (run channel program—SVC 0) macro instructions issued by VSAMagainst the data or index component.EXTENTS—Extents in the data or index component.REC-DELETED—The number of records that have been deleted from the data orindex component. Statistics for records deleted are not maintained when the dataset is processed in control interval mode.REC-INSERTED—For a key-sequenced data set, the number of records that havebeen inserted into the data component before the last record; records originallyloaded and records added to the end are not included in this statistic. For relativerecord data sets, it is the number of records inserted into available slots; thenumber of records originally loaded are included in this statistic. Statistics forrecords inserted are not maintained when the data set is processed in controlinterval mode.REC-RETRIEVED—The number of records that have been retrieved from the dataor index component, whether for update or not for update. Statistics for recordsretrieved are not maintained when the data set is processed in control intervalmode.Appendix B. Interpreting LISTCAT Output Listings 373