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Queries on V$RMAN_STATUS are Very Slow Even After GATHER_FIXED_OBJECTS_STATS is Run (Doc ID 1525917.1)

Last updated on FEBRUARY 14, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.2 to 12.2.0.1 [Release 11.2 to 12.2]
Information in this document applies to any platform.
***Checked for relevance on 17-Jul-2014***

Symptoms

QUERIES ON V$RMAN_STATUS are very slow even after running GATHER_FIXED_OBJECTS_STATS

Getting SQL 10046 trace and running the trace file through TKPROF shows the problem query:

 

select *
from
v$rman_status

call     count       cpu    elapsed       disk      query    current         rows
------- ------  -------- ---------- ---------- ---------- ----------   ----------
Parse        1      0.04       0.20          7        128          0            0
Execute      1      0.00       0.00          0          0          0            0
Fetch       17   2488.40    2525.34          0          0          0          233
------- ------  -------- ---------- ---------- ---------- ----------   ----------
total       19   2488.44    2525.55          7        128          0    

 
Almost all the elapsed time is spent on CPU.

- Issue can also reproduce when running the queries directly from sqplus.

 

A.  When Database is mounted:

sqlplus / as sysdba

set timing on

select * from v$rman_status;

...

1768 rows selected.

Elapsed: 00:00:26.00

 

B.  When Database is open:

sqlplus / as sysdba

set timing on

select * from v$rman_status;

...

ERROR:

ORA-01013: user requested cancel of current operation

225 rows selected.

Elapsed: 00:42:05.75

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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