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Verify, recover, and optimize ISAM files (Revision 4 or higher)
The ISAM file maintenance utility (isutl) performs maintenance on Revision 4 or higher ISAM files. Maintenance includes verifying the integrity of files, recovering corrupted files, reclaiming deleted record space, converting to compressed or static RFA file types, ordering data by a particular key, and packing indexes.
Isutl has the following options: