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FILESYSTEM_LIKE_LOGGING option in secure files

edited Sep 16, 2009 10:15PM in Database Administration (MOSC) 3 commentsAnswered ✓
Hi all,
I got a question: what kind of info Oracle database stores when using secure files with "filesystem_like_logging" in order to restore data?
Don't know how exactly this feature works but I'm really surprised about the disk space saved. I read "filesystem_like_logging" has to do with metadata.

Let's say we got a table with 10 million rows including a CLOB field. That field is stored as SECUREFILE "filesystem_like_logging" option in a ASSM tablespace
locally uniform 16MB extension. We have inserted 10 million rows with a CLOB size of 1kb. Here are the main stats:

Rows: 10 M

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