TAILIEUCHUNG - G Miscellaneous Topics

Appendix Overview This appendix assists you to: • Use bigfile tablespaces for very large databases (VLDB) • Describe the row IDs for bigfile tablespaces • Use temporary tablespace groups (TTG) for VLDB BFT ROWI TTG | Miscellaneous Topics Appendix Overview This appendix assists you to: Use bigfile tablespaces for very large databases (VLDB) Describe the row IDs for bigfile tablespaces Use temporary tablespace groups (TTG) for VLDB BFT ROWID TTG Bigfile Tablespaces: Overview A bigfile tablespace contains a single file. The maximum file size ranges from 8 TB through 128 TB. Tablespaces are logically equivalent to data files. Database Tablespace SMALLFILE Data file BIGFILE Data file Bigfile Tablespaces: Overview A bigfile tablespace (BFT) is a tablespace containing a single file that has a very large size. The addressing scheme allows up to four billon blocks in a single data file, and the maximum file size can be 8 TB–128 TB depending on the Oracle block size. To distinguish a BFT from the traditional tablespace that can contain multiple, relatively small files, the traditional tablespace is referred to as a “smallfile” tablespace. An Oracle database can contain both bigfile and smallfile .

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