 | ||
| Compressing Oracle archive logs using Compression Advisor | ||
|---|---|---|
| Prev | Using the Compression Advisor tool | Next |
| ||
| Compressing Oracle archive logs using Compression Advisor | ||
|---|---|---|
| Prev | Using the Compression Advisor tool | Next |
The Oracle archive logs are read-only files and are never updated after they are generated. During recovery, Oracle reads archive logs sequentially. Archive logs are very good candidates for compression, and archive logs are highly compressible.
You can use the Compression Advisor command sfae_comp_adm to compress archive logs.
To compress archive logs using Compression Advisor
$ sfae_comp_adm -o compress_archive_logs -n 2 -d /arch/sfaedb Compressing file /arch/sfaedb/1_4_773425912.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_2_767364459.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_3_773425912.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_2_773425912.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_4_767364459.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_3_767364459.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_5_773425912.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_1_773425912.dbf resides on /arch/sfaedb Compressing file /arch/sfaedb/1_6_773425912.dbf resides on /arch/sfaedb
This command compresses all archive logs that were generated two days ago or earlier, and that belong to the destination /arch/sfaedb.