Product Documentation

FairCom ISAM for C

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File-Related Limits

FairCom DB has very few hard limits, and some can be adjusted. The following limits should be kept in mind as you work with FairCom DB:

  • Max fixed-length record size: 64KB
  • Max variable-length record size: 2GB
  • Max number of records per file: No limit
  • Maximum file size: 16 Exabytes (18 million terabytes)
  • Maximum number of open files: 32,767
  • Maximum number of indices per data file: Defaults to 64 (can be increased using MAX_DAT_KEY in ctsrvr.cfg to a theoretical limit of 32767, although a practical limit exists well before this value)
  • Maximum number of segments per index: Defaults to 16 (can be increased using MAX_KEY_SEG in ctsrvr.cfg to a theoretical limit of 32767, although a practical limit exists well before this value)

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