Problem
A Unix client with Oracle version 11.2 is experiencing slow backup speeds of xx KB/sec for one subfolder, while other folders for the client are backing up with faster speeds of several MB/sec.
Cause
Folder investigation shows 8 million files in the folder.
The folder location is: install_path/product/11.2.0/grid_11202/rdbms/audit/
Solution
Regular file cleanup is needed on this folder to help backup performance.
After the Oracle team purged old audit files, the folder backup performance issue was resolved.
Third-party Reference:
Oracle ASM: $ORACLE_HOME/rdbms/audit keeps increasing in total size and number of files
http://kb.initso.at/2011/07/oracle-asm-oracle_homerdbmsaudit-keeps-increasing-in-total-size-and-number-of-files/
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