Total possible sessions in database

I have a doubt as to how to check total sessions which are possible on the database. I mean, the maximum count of sessions which can connect to the database like, we have the below command which checks the total sessions in the database,
select count(1) from v$session
I hope, my question is clear.
Please, help in solving the doubt.
regards

Check the parameter value for sessions.
SQL> connect /as sysdba
SQL> show parameters sessions
or
Check the current resource limits i.e. Sessions, Processes, etc
SQL> select * from v$resource_limit
Regards,
Sabdar Syed.

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Total concurrent sessions in database.

I have a doubt as to how to check the total concurrent sessions on the database. I mean, how many total sessions are connected to the database at any particular moment.
I hope, my question is clear.
Please, help in solving the doubt.
regards

Is this a duplicate of your other question?
Total sessions in database
Have you looked up the V$SESSION table i the documentation? That's probably what you're looking for.
Justin

Total sessions in database

I have a doubt as to how to check the total sessions on the database. Also, how many total sessions which are possible on the database.
I hope, my question is clear.
Please, help in solving the doubt.
regards

I assume this is a duplicate of your other thread.
Re: Total concurrent sessions in database.
I answered in the other thread. In the future, though, please don't duplicate posts.
Justin

Is it possible to connect database using session bean

Dear all,
Is it possible to connect database using session bean without using entity beans like cmp,bmp.
if ur answer is yes, then pls tell me where to put the select statement and transaction attribute like(6 types).
if u have sample code, then it is good for me.
Hope I will get answer.

Sure it is.
Try something like this (and maybe get a book on JDBC):
String name;
try {
     InitialContext ic = new InitialContext();
     DataSource ds = (DataSource) ic.lookup(Constants.MY_DATASOURCE);
     Connection connection = ds.getConnection();
     String sql = "SELECT * FROM TABLE";
     PreparedStatement statement = connection.prepareStatement(sql);
     ResultSet rs = statement.executeQuery();
     while (rs.next()) {
          name = rs.getString("NAME");
     if (rs != null)
          rs.close();
     if (statement != null)
          statement.close();
     if (connection != null)
          connection.close();
catch (NamingException e) {
     // Can't get JDBC datasource
     // ... do something with this exception
catch (SQLException e) {
     // SQL exception from getter
     // .... do seomthing with this one too
}

How can i restrict a user not open more than 3 sessions in database

how can i restrict a user not open more than 3 sessions in database.For this i have already create a profile and set CONCURRENT_SESSIONS=3 and assing that profile to user but the problem is there.

You will simply need to use the following parameter in your CREATE PROFILE syntax.
CREATE PROFILE normal_user
LIMIT SESSIONS_PER_USER 2;
but the resource limits set for a profile are enforced only when you enable resource limitation for the associated database.
you could do this either by having an initialization paramater which will invoke as soon as the database starts or try using ALTER SYSTEM command

Inactive sessions increasing database

Hi
We are using oracle11.5.10.2 on windows 2000 server and database version 10.2.0.3
we are facing problem with inactive sessions,grdually inactive sessions increasing and thats leads database crash.
Temporary i increased processes parameter value tp 400 prviously it was 200
Most of inactive session from apps user only
How can i fix this problem?
Thanks
With Regards
OH

Hi,
Please see these threads.
how to kill inactive sessions????????
how to kill inactive sessions????????
Inactive sessions in Database
Re: Inactive sessions in Database
Regards,
Hussein

Inactive sessions in Database

Hi,
Lot inactive sessions are in database, Before we bounce database ----> max process got reached, For that we have changed max process and bounced the database but i can see still 75 inactive sessions in database,
SQL> show parameter process
NAME TYPE VALUE
aq_tm_processes integer 1
db_writer_processes integer 1
gcs_server_processes integer 0
job_queue_processes integer 2
log_archive_max_processes integer 2
processes integer 200
SQL> show parameter spfile
NAME TYPE VALUE
spfile string
Then i changed processes to 300
SQL> show parameter process
NAME TYPE VALUE
aq_tm_processes integer 1
db_writer_processes integer 1
gcs_server_processes integer 0
job_queue_processes integer 2
log_archive_max_processes integer 2
processes integer 300
even after bouncing still 75 inactive sessions in database

Hi,
What are the events/programs of those sessions?
Have you started the application or not yet?
Go through the following documents and see if it helps.
Note: 427759.1 - How To Prevent Inactive JDBC Connections In Oracle Applications
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=427759.1
Note: 261791.1 - 11i JDBC Thin client connections remain active, MAX PROCESSES REACHED
https://metalink2.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=261791.1
Regards,
Hussein

Is Fast Incremental Backups possible on standby databases for 10.2.0.5?

Hi,
Can anyone help to clarify if it is possible to have Fast Incremental Backups on 10.2.0.5 standby . The information in MOS (Doc ID 262853.1) stated:
Note : Fast Incremental Backups were not possible on standby databases till 10g
but from 11g Fast Incremental Backups are available on standby databases also.
It sounds ambiguous.
Thanks
Jun

The answer is No, due bug 6130588.
Is Block Change Tracking Enabled On Physical Standby Supported By Rman (Doc ID 468576.1)

SHUTDOWN: Active sessions prevent database close operation

Hi
Yesterday morning, our Oracle Apps Database did not shutdown and throws the following error.
Fri May 11 06:57:18 2012
Active call for process 2031784 user 'xxxl' program 'oracleyyy@zzz'
SHUTDOWN: waiting for active calls to complete.
Fri May 11 07:04:01 2012
Incremental checkpoint up to RBA [0x165b.1b2b21.0], current log tail at RBA [0x165b.1b2b21.0]
Fri May 11 07:11:14 2012
MMNL absent for 1203 secs; Foregrounds taking over
Fri May 11 07:24:05 2012
Incremental checkpoint up to RBA [0x165b.1b2b42.0], current log tail at RBA [0x165b.1b2b4a.0]
Fri May 11 07:44:10 2012
Incremental checkpoint up to RBA [0x165b.1b2b6f.0], current log tail at RBA [0x165b.1b2b7d.0]
Fri May 11 07:52:18 2012
SHUTDOWN: Active sessions prevent database close operation
Fri May 11 08:04:39 2012
Since last 3 years, we never faced such a situation even though many modules (oracle Apps) were implemented from time to time. This time OTL module is going live and consultants were running some procedure during backup start time.
Even after issuing 'addbctl.sh stop immediate', how come oracle did not close all the database sessions? How to prevent such situation in future?
Any help is highly appreciated.
Regards
Arizuddin

you can first do a alter system checkpoint and then try to shutdown the database.
You can also kill all the active user sessions from v$session and then shutdown the database.

So many INACTIVE sessions in Database

Hi,
Actually PMON will clears all inactive sessions from database.
But i can see there are sessions like more then 3,4 days old.
Why PMON is not clearing them. ?
On which intervals will PMON do inactive sessions cleaning.
thanks in Advance.

>
But i can see there are sessions like more then 3,4 days old.
>
Heed the advice of the other responders.
But for idle sessions that you want cleared immediately you can use
ALTER SYSTEM DISCONNECT SESSION . . . IMMEDIATENOTE - this acts differently than the 'KILL SESSION' syntax typically used.
See 'DISCONNECT SESSION' clause in the SQL Language reference section for ALTER SYSTEM
http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_2013.htm
>
Use the DISCONNECT SESSION clause to disconnect the current session by destroying the dedicated server process (or virtual circuit if the connection was made by way of a Shared Sever).
The IMMEDIATE setting disconnects the session and recovers the entire session state immediately, without waiting for ongoing transactions to complete.
>
Then contrast that with the text for KILL SESSION

IDSMC 2.0.1 How to see the total IDS Events in Database

If I:
1.
In "Security Monitor" - "Data Management" - "Database" - "Rules" specify a trigger condition "Notify via e-mail" and set the trigger action "Total IDS events in database exceed" to 50000
2.
Then in the "Security Monitor" - "Monitor" - "Events" - Lanch Event Viewer with "Event Start Time" set to "At Earliest".
3.
And deletes all events from database. Then after a while the trigger action for 50000 IDS events is triggered and send the e/mail notification even though I only see a few thousand event in the in the Security Monitor.
4. Is this a bug (that the Security Monitor only show a few thousand events) or is the another way to see the total number of IDS events in the database ?
Thanks
Gert

This document should explain it better,
http://www.cisco.com/univercd/cc/td/doc/product/rtrmgmt/cw2000/mon_sec/secmon20/ug/ch04.htm#wp322337

How to find the total size of the database before the Restore.

Hi Guys,
I'll do a Restore, but I do not know the environment and need to know what the total size of the database to create a storage area.
Is there any way to find out the total size of the database(including all datafiles and temp) using only the RMAN catalog before running the Restore.
I'm using Tivoli TSM with ASM.
Levi Pereira

Hi tychos,
break on report
compute sum of TOTAL_DB on Report
select 'DataFiles' NAME, SUM(ROUND(bytes/1024/1024/1024)) TOTAL_DB from rc_datafile
where db_name = 'ORCL'
UNION ALL
select 'TempFiles' NAME, SUM(ROUND(bytes/1024/1024/1024)) TOTAL_DB from rc_tempfile
where db_name = 'ORCL'This query returned I had 372 Gbytes of data.
At the end of the Restore Database got the size of 408 Gbytes.
The total size of all Redo was 3Gbytes that was not being counted anyway there was a difference of 33Gbytes.
I need to understand the reason for the difference in sizes.
It makes no sense to me RMAN catalog does not inform the total size of the database (Datafiles, tempfiles, Redo and controlfile) before the Restore since it's information is already somewhere.
Thanks for your help.
Levi

All possible causes of database hung

Hi,
Can someone please tell me what are all the possible causes of database hung?
Thanks.
Creems

Already discussed threads.
http://forums.oracle.com/forums/search.jspa?threadID=&q=database+hang&objID=f61&dateRange=lastyear&userID=&numResults=15
Regards,
Sabdar Syed.

Restrict RMAN to start single session per database

Hi,
Is there way we can restrict RMAN to start single session per database. we are using RMAN for full database Backup.
I can not restrict user session as same catalog user is shared with other database as well.
ORACLE : 11g

Ok :)
Backup files created by RMAN must be tagged with the local system name, and with RESTORE operations that tag must be used to restrict RMAN from selecting backups taken on the same host. In other words, the BACKUP command must use the TAG node name option when creating backups; the RESTORE command must use the FROM TAG node name option; and the RECOVER command must use FROM TAG node name ARCHIVELOG TAG node name option.
RESTORE DATABASE FROM TAG '<node name>'
RECOVER DATABASE FROM TAG '<node name>' ARCHIVELOG TAG '<node name>'
http://download.oracle.com/docs/cd/B14117_01/server.101/b10823/manage_ps.htm

Session scope/Database connection

Hi y'all!
I got some questions about session scope and database connections:
I'm using a bean called dataBase. With this bean i open a database connection and execute some sql statements. the bean has page-scope, which means, as far as i know, the bean will be destroyed after the user leaves the current page.
but what happens with my dataBase connection?!? could it be possible that it is still active after the bean was destroyed? so should i close my database connection manually or will it close automatically when the bean is beeing destroyed?
thanks for your help!

You should explicitly close the connection. One way is to use the finally clause to ensure that the connection is closed even if your code throws an exception.

Total possible sessions in database

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