Join V$SQLAREA and V$Session

hi all,
which column i need to use to join V$session and V$sqlarea?
My main aim is to find top 5 queries with most disk_reads and generate a report containing relevant information.
Thanks

i use to check active queries like this from both tables
select
     substr(sid || ',' || serial#,0,15) sid,
     USERNAME,
     PROGRAM,
     MACHINE,
     OSUSER,
     LOGON_TIME,
     TERMINAL,
     sql_text Query
from
     v$sqltext,
     v$session
where
     address=sql_address
     and hash_value=sql_hash_value
     and status='ACTIVE'
order by LOGON_TIME,sid,piece

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Join v$sql and v$session

Hi All,
I want following columns from both v$sql(last_active_time) and v$session(username,status ,program)
Cud anyone guide me how to what is the sql that joins both views so that i get above column info ?
Thanks a lot

sybrand_b wrote:
Yep but that is a 9i response and it won't work, IIRC, in 10g and higher.
Sybrand,
Why it won't work in 10g or higher?
SQL> /
Enter value for sid: 138
old   6:    and ses.sid=&&sid
new   6:    and ses.sid=138
SQL_TEXT
select /*+ ORDERED USE_NL(st) */ sql_text   from v$session ses,
       v$sqltext st   where st.address = ses.sql_address    and
st.hash_value=ses.sql_hash_value    and ses.sid=138 order by pie
ce
SQL> l
1 select /*+ ORDERED USE_NL(st) */ sql_text
2    from v$session ses,
3         v$sqltext st
4    where st.address = ses.sql_address
5     and st.hash_value=ses.sql_hash_value
6     and ses.sid=&&sid
7* order by piece
SQL> select * from V$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL>Regards
Aman....

V$BGPROCESS and V$SESSION

This is on 10g.
V$BGPROCESS displays information about background processes
V$SESSION has some rows representing background processes.
What is the difference between two ?
Am I correct in understanding that ; v$bgprocess contains total allocated processes whereas, v$session represents total runtime processes on that instance?
That being said, for example, if there are 10 sessions, all 10 sessions will have same number of bacground processes. Is that true?
To explain further, say if v$session displays DBW0 and DBW1, it means two instance of DBWR processes are running for this instance. But if v$bgprocess has DBW0.. DBW9 processes, that means, you can maximum have 9 DBWR processes on that instance.
Please concur if above is correct.
Thanks
R
t

it gives 157 rows, but in production it gives only 70 rows. Does this mean that maximum number of bg processes allowed are less on prod box than dev box?Your production database has 70 BG process, so its showing you this value.
The BG process can differ instance to instance, such as ARCH process, if archiving is enable for an instance, then you will have this one from your query, and you will not have this one where the archiving is not enabled.
You can set the PROCESSES parameter in DB, there is no parameter relate to BG process solely.
you would have the value of PADDR=00 for the inactive BG processes.
Those BG processes are active will have a value of PADDR which is the address of the process state object.
Look at below :
you will find that PADDR !='00' from v$bgprocess retrieve the same columns as querying the v$process and v$session by joining and have the PADDR=value/not 00, that is the active BG processes
SQL> ed
Wrote file afiedt.buf
1 select a.name,a.paddr,b.program,b.status,b.user#,b.username
2 from v$bgprocess a
3 join v$session b
4* on (a.paddr = b.paddr)
SQL> /
NAME PADDR PROGRAM STATUS USER# USERNAME
MMNL 2ECF1944 ORACLE.EXE (MMNL) ACTIVE 0
MMON 2ECF14C4 ORACLE.EXE (MMON) ACTIVE 0
QMNC 2ECF0744 ORACLE.EXE (QMNC) ACTIVE 0
CJQ0 2ECEF0C4 ORACLE.EXE (CJQ0) ACTIVE 0
RECO 2ECEEC44 ORACLE.EXE (RECO) ACTIVE 0
SMON 2ECEE7C4 ORACLE.EXE (SMON) ACTIVE 0
CKPT 2ECEE344 ORACLE.EXE (CKPT) ACTIVE 0
LGWR 2ECEDEC4 ORACLE.EXE (LGWR) ACTIVE 0
DBW0 2ECEDA44 ORACLE.EXE (DBW0) ACTIVE 0
MMAN 2ECED5C4 ORACLE.EXE (MMAN) ACTIVE 0
PMON 2ECED144 ORACLE.EXE (PMON) ACTIVE 0
11 rows selected.
SQL> select * from v$bgprocess where paddr!=00;
select * from v$bgprocess where paddr!=00
ERROR at line 1:
ORA-00932: inconsistent datatypes: expected BINARY got NUMBER
SQL> select * from v$bgprocess where paddr!='00';
PADDR PSERIAL# NAME DESCRIPTION ERROR
2ECED144 1 PMON process cleanup ##########
2ECED5C4 1 MMAN Memory Manager ##########
2ECEDA44 1 DBW0 db writer process 0 ##########
2ECEDEC4 1 LGWR Redo etc. ##########
2ECEE344 1 CKPT checkpoint ##########
2ECEE7C4 1 SMON System Monitor Process ##########
2ECEEC44 1 RECO distributed recovery ##########
2ECEF0C4 1 CJQ0 Job Queue Coordinator ##########
2ECF0744 1 QMNC AQ Coordinator ##########
2ECF14C4 1 MMON Manageability Monitor Process ##########
2ECF1944 1 MMNL Manageability Monitor Process 2 ##########
11 rows selected.

What is the difference between Session timeout and Short Session timeout Under Excel Service Application -- session management?

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All,
I am having a problem with Framesets and page session attributes. I
have a client who's application uses a three frame frameset. They
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Greetings,
I create stateful session bean in the first jsp, then how can I get the stateful session bean in the
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stateful and stateless can maintain the state in the second jsp. What is the difference betweenWhat do you mean by this exactly?..
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session bean.The correct question, it here seems, is "when" to use which type... Use a "stateful" bean when information about (from) the client (i.e. the caller) must be maintained across method calls of the bean. Use a "stateless" bean for general business methods that do not depend on "prior knowledge" of the client (i.e. the caller).
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session bean can maintain the state for the client?I recommend that you spend more time learning about EJBs generally. In particular, it seems you require more fundamental understanding of their scope and lifecycle. Refer to sections 4, 6, and 7 of the EJB 2.0 Specification.
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we have use following statement to set session
variable
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or
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>
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Urgent - How to join multiple facts and dimensions in OBIEE rpd??

Hi,
In my RPD I have 3 facts and 4 dimensions and the joins defined are as below
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Edited by: user11935561 on Feb 10, 2010 6:27 AM
Edited by: user11935561 on Feb 10, 2010 6:28 AM

You can find the same issue in
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or
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http://there-n-back-again.blogspot.com/2009/04/oracle-analytics-how-to-report-over-non.html
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Joining DB VIEW and Command result in cartesian product

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Join V$SQLAREA and V$Session

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