Slow queries on v$backup_archivelog_summary and v$backup_spfile_summary (Doc ID 1474718.1)

Last updated on JULY 24, 2012

Applies to:

Oracle Server - Enterprise Edition - Version 11.1.0.7 and later
Information in this document applies to any platform.

Symptoms

In the oem "view backup report" seems to hang when selecting one of the backups of db hosted on exadata system. in meantime oem waits for query
completion involving one of v$backup*summary views.  This problem can be replicated in sqlplus:

sql> set timing on;
sql> select count(1) from v$backup_spfile_summary;
count(1):1, Elapsed 00:05:05.41

similar case for v$backup_archivelog_summary

sql> select count(1) from v$backup_archivelog_summary;
count(1):1, Elapsed 00:17:32.62

Cause

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