- Explosion in Data Volumes
- As data volume expands performance often declines
- Disk costs money
- Transparent to applications, SQL, and PL/SQL
- Use spare CPU cycles to decrease the bytes written and read
- Transparent to applications, SQL, and PL/SQL
- May improve performance by requiring the transfer of fewer bytes from disk through the network, into the CPU, to be stored in the buffer cache
- Increase the amount of data stored on existing disk
- Compression is performed at the block level
- Data Guard Network Compression
- Data Pump Compression
- Fast RMAN Compression
- OLTP Table Compression
References
- http://www.morganslibrary.com/pres/ougf_advcomp_2009.pdf
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