Statements in v$SQLAREA

Question

I see some sqls in v$sqlarea. But when I query v$session from the hash_Value of v$sqlarea, nothing comes up. Any particular reason why that would be so?
Thank you.
R

Answer 1

Okay :) here you go
[1]SELECT * from v$version
BANNER
Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production
PL/SQL Release 9.2.0.6.0 - Production
CORE 9.2.0.6.0 Production
TNS for HPUX: Version 9.2.0.6.0 - Production
NLSRTL Version 9.2.0.6.0 - Production
[2] Here is from v$SQLarea
SELECT *
FROM (SELECT Substr(a.sql_text,1,20) sql_text,
Trunc(a.disk_reads/Decode(a.executions,0,1,a.executions)) reads_per_execution,
a.buffer_gets,
a.disk_reads,
a.executions,
a.sorts,
a.address,hash_value,is_obsolete
FROM v$sqlarea a where a.sql_text like 'SELECT%'
order BY 2 DESC)
WHERE rownum <= 10
Results
SQL_TEXT READS_PER_EXECUTION SORTS ADDRESS HASH_VALUE
SELECT /*+ ORDERED U 174265 11 C00000022FFEE2E8 2024820696
SELECT /*+ 168019 3 C00000021BE3E7B0 3675638738
SELECT /*+ 166238 2 C0000002224D1628 4130578616
SELECT /*+ ORDERED U 165886 C000000245E5ADA0 1735771920
[3] Now query v$session with one of the value from #2
Select * from v$session where hash_value = 2024820696
No rows returned
Hope this helps
Thanks,
R