Slow IO Using ASM With SVM (Solaris Volume Manager) Mirrored Logical Volumes
Last updated on OCTOBER 31, 2016
Applies to:Oracle Database - Enterprise Edition - Version 10.1.0.2 to 220.127.116.11 [Release 10.1 to 11.1]
Oracle Solaris on SPARC (64-bit)
Sun Solaris SPARC (64-bit)
Solaris Operating System (SPARC 64-bit)
Database performance was severely affected by excessive IO latencies, the database write times was observed to be > 80ms in some cases.
The following wait events show abnormally high values (>60ms)
log file parallel write db file parallel write control file parallel write log file sync
ASM was implemented over mirrored Logical Volumes.
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