Size of maximum sga by session

Similar Questions

• The maximum size of the SGA

  Hello
  
  I have a doubt about the size of the sga.
  
  Assume that value sga_max_size is 160 m and size sga_target also is 160 m.
  
  If we set sga_target 160 m it allowcates than 160 m for db cache, shared pool, shared pool, pool of java, rivers of pool.
  
  So what redo buffer. What will be the size of the buffer cache, mem full is allocated for only 5 components.
  
  How can we find the total size sga.
  
  Thank you very much.

  display of the sgainfo $ v queries for detailed information

  Select * from v$ sgainfo;

  NAME RES BYTES
  -------------------------------- ---------- ---
  Fixed SGA size 2089400 No.
  Redo buffers 6295552 No.
  Cache 415236096 the buffer size Yes
  Shared Pool Size 633339904 Yes
  Large pool size 4194304 Yes
  Java Pool size 8388608 Yes
  Water pool size 4194304 Yes
  Granule size 4194304 No.
  Maximum SGA size 1073741824 No.
  Starting over in the Shared Pool 100663296 No.
  Free up available memory 0 BMG

  Thank you!
  KR

• Creation of the database - the size of the SGA

  Hi all
  
  When I try to create a database using DBCA, my default SGA size: 128. PGA:794. When I click on the next button, I get the following caveat...
  
  The following settings do not meet the requirements of the minimum recommended size:
  
  A size of SGA to at least 160 MB is recommended
  
  Do you want to Setup Wizard to change the setting of the database? I gave ignore, and I changed the size of the SGA at: 160, I received the warning below
  
  The SGA size cannot be greater than the segment size memory maxmimum shared (1342177728). Refer to the guide to installing oracle for configrue your operating system kernel parameters.
  
  Please suggest me on the same...
  
  Thank you
  RIF

  user10737570 wrote:
  My other SGA_MAX_SIZE database is 1 G.

  Now, I am creating the database using DBCA. My default allocated sga size is 128 MB. Recommended size of SGA 160MO. I'm not able to extend the size of the SGA. Please refer my previous post...

  Could you please tell me why my default screen is only showing 128 MB.

  Thank you

  The oracle Installer determines the sga_size bij available calculation free "shared memory".
  It is the setting of the maximum shared memory such as published in the first message less memory used by your first database, less some other stuff shared memory.

  To remedy, you increase the size of memory amount shared in your kernel and reboot the system if necessary.

  If your system is a Redhat Enterprise system, then search the variable called

  kernel.shmmax =

  in /etc/sysctl.conf

  Increase this value, and then save the file (as root)
  Then run/sbin/sysctl Pei to activate the new configuration

• ACS 5.6 Maximum by user sessions

  Hi all,

  I have a client that has installed a 5.6 ACS joined his announcement. He wants to limit the maximum number of sessions per user, but these users are authenticated by the AD. How can I limit sessions maximum?

  I tried to do in the configuration of the ACS, access policies > Max user Session policy > Max Session user settings, but is does not match this policy. I apply this policy, authorization policy? How can I do this?

  If you can leave me a link where it is explained, thank you much.

  Kind regards.

  David.

  Hi David. In my opinion, that these settings apply to internal groups of the ACS. So in order to take advantage of those you need to map your ad to an internal group ACS groups and then apply the 'Max user political Session' to those. Here is a link with more information:

  http://www.Cisco.com/c/en/us/TD/docs/net_mgmt/cisco_secure_access_control_system/5-3/user/guide/acsuserguide/access_policies.html#pgfId-1162308

  I hope this helps!

  Thank you for evaluating useful messages!

• How to limit maximum SSL VPN sessions by group policy on ASA5510?

  How to limit maximum SSL VPN sessions by group policy on ASA5510?

  There are ideas?

  There are 2-Group Policy: within a maximum of 10 connections, in the second - 15 (total licenses for SSL VPN 25 connections).

  Hi Anton,.

  It is an interesting question.

  Please check the following options, depending on your scenario:

  simultaneous VPN connections

  Pour configurer configure the number of simultaneous connections allowed for a user, use the command simultaneous vpn connections in the configuration of group policy or username configuration mode. To remove the attribute from the running configuration, don't use No form of this command. This option allows inheritance of a value from another group policy. Enter 0 to disable the connection and prevent the access of the user.

  simultaneous vpn connections {integer}

  No vpn - connections

  http://www.Cisco.com/en/us/docs/security/ASA/asa84/command/reference/uz.html#wp1664777

  There is a global command, although may not be useful, I wanted to share it with you:

  VPN-sessiondb max-session-limit

  --> To specify the maximum limit of VPN session.

  Best option:

  What you can do is to create a pool of IP 10 IP addresses in one and 15 in the other, this way you let only 10 connections and 15 respectively.

  IP local pool only_10 192.168.1.1 - 192.168.1.10

  IP local pool only_15 192.168.2.1 - 192.168.1.15

  Then,

  attributes of the strategy of group only_10

  the address value only_10 pools

  !

  attributes of the strategy of group only_20

  the address value only_20 pools

• IF database-> RAC database: estimate of the size of the SGA for each instance

  Hello!

  Let's say that there is a single instance with SGA 100 G size DB (assume this size is optimal for this database).

  If this database is intended to be converted to a RAC database with 2 instances (suppose DB workload will be spread over multiple instances).

  How to estimate the needs of SGA size for each instance in the RAC database?

  It takes 50G + General cool CARS (say 15%) for each instance?

  (Do not consider situation when one of the instances has failed, and all the charge redirects to an instance having survived)

  I'd be grateful if someone has offered or provided useful references.

  ---

  Kind regards

  Kyrylo

  As a general rule, I would size the SGA on new nodes to 120% of the SGA to single instance. Yes, this means that you will more than double the size of the SGA. You will need additional space to hold the load memory Cache Fusion. And the buffer Cache are possibly a little more space to store additional versions of blocks that seem to accompany the many implementations of CARS. Now, it's just a rule of thumb, so it has a high degree to be very wrong.

  You'll want to consider two big things... (1) the service being used. Will you take advantage of the services to perform the partitioning application? If so, instances can see various workloads that can lead to requests for different resources. (2) you will support a kind of failover (TAF or manual failover) applications? If so, then the LMS must be sufficiently sized to support the additional workload.

  See you soon,.
  Brian

• ORA-12899: value too large for column (size: 30, maximum: 25)

  I try to insert values from one table to another using substr (column_x, 1, 25) (field target is of type varchar (25)) and I get an error: ORA-12899: value too large for column (size: 30, maximum: 25) how is this possible?

  SUBSTRB uses the same syntax:

  http://docs.Oracle.com/CD/E11882_01/server.112/e41084/functions181.htm#i87066

  If chopping byte characters does not mean that you could end up with a partial character at the end for example if each character 2 bytes, then the last character would not that it is the first byte, so wouldn't an entire character.

  Depends on what you actually try to reach by taking the partial strings.

  Keep in mind, with the UTF8, you could have up to 4 bytes of length characters each.

• Maximum number of sessions?

  Could someone tell me if there is a maximum number of sessions that can be active at any time and if what it is and if it is done by factors such as memory?

  It would be on a Windows Server 2008 64-bit, with 4gig of RAM

  Thank you

  Mark

  As I have shown, you can actually get by yourself. Suppose that you have 500 000 active sessions in memory, each with a load of 1000 bytes and 1 GB of memory available in the Virtual Machine Java. Then there will probably be some memory problems. Depends on the server, the Virtual Machine and your application.

  This method of estimation is just a rule of thumb. She makes the unrealistic assumption that the Virtual Machine is busy with session management. Once you take into account the requests memory from the server, the JVM and your application and the configuration of the memory type, it may be that only 1 to 5% of memory is available for sessions. Divide this amount by the average number of bytes in a session, to get an estimate for the maximum number of sessions.

• ORA-00018. Exceed the maximum number of sessions

  Hi all
  
  I have a windows Server 2003, oracle 10g release 2.
  connection of 300 users competitor.
  
  My SESSIONS parameter = 800
  My PROCESS parameter = 723.
  
  After 2 or 3 days, I got the following message when I try to connect.
  
  ORA-00018. Maximum number of sessions to exceed.
  
  even I have restart my server, I got this number sometimes.
  
  What is the problem? I'm really in a very bad situation, users can not connected.
  
  Thank you

  Please post output commands below:

  Select the value of the parameter $ v where name = "sessions";
  Select count (*) in the session of v$.
  Select * from v$ resource_limit;

  If you see the 3rd command output as equal values in all the columns then its correct and Oracle returned ORA-00018.

  Then, V$ SESSION is fake! It does not report all sessions really in use. If you look in V$ SESSION see text (with the help of V$ FIXED_VIEW_DEFINITION), you will see that V$ SESSION reports of the sessions USER and only BACKGROUND.

  But there is a 3rd type of session - a RECURSIVE session, which is used for recursive calls data dictionary as explained above. V$ SESSION does not display these.

  So what is the moral of this story?

  Oracle uses recursive sessions for recursive data dictionary operations
  These sessions are also taken from the array of objects in session state controlled by the session setting
  V$ SESSION shows no recursive sessions, but V$ RESOURCE_LIMIT told it the truth about the use of the session state object table
  If you hit the error ORA-00018, and then expand your table of parameters of sessions or configure your application to use fewer connections or sessions

  Note that Oracle 11.2 changed the automatic calculation of parameters of sessions and large number of session state objects is attributed to a number of default process.

  Source: http://tech.e2sn.com/oracle/oracle-internals-and-architecture/recursive-sessions-and-ora-00018-maximum-number-of-sessions-exceeded

  Concerning
  Girish Sharma

• When I put the virtual memory in windows vista is it ok! to enter the same size (MB) the initial size and maximum size boxes example 2877 (MB's) entered the two box?

  When I put the virtual memory in windows vista Home premium is ok! to enter the boxes the same size (MB) "initial size and the Maximum size" example 2877 (MB's) entered in each box for initial and maximum size?

  Yes, you can do it. The minimum must be large enough to contain an image of the core. If the maximum is too small, you will get the unpleasant results.

  This article has some tips on the size of the page file at the end.

  http://blogs.technet.com/b/markrussinovich/archive/2008/11/17/3155406.aspx

• (1) size of maximum drive Compaq Presario 5304 BIOS? (2) updated BIOS available?

  I have a desktop Compaq Presario 5304. She was made in May 1999 and gave good service. It's a Samsung CD-Master 32 - SCR-3232 model computer. The ROM bios I have now is 2a5img09. It works in Win 98

  I would like to know 1) if there is an upgrade of the BIOS for a hard drive more and 2) that the maximum size of hard drive is for the 2a5img09 of the original BIOS.

  Best regards, Bruce

  Are the specifications of your DESKTOP COMPAQ PRESARIO 5304. There is no update of the BIOS listed on the download page of "software and drivers".

• Is there a method to increase the font size in an Adobe Connect session?

  I have a 4 k screen on my laptop.  Web sites fine-scale but when I'm in an Adobe Connect session, the scale is far and the font size seems to be something like pt.5, if that.  Is there a way to increase the font size of the Acrobat Connect Pro sections?  Change the resolution on my laptop does not solve the problem.

  This is the resolution that I get no matter if I'm at 1024 x 768 or 3840 x 2160.  It's too hard for my split screen to be read by others.

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• __Details: studying why 38% (11 007) events were lost during data collection. Settings for Windows event trace (ETW, Event Tracing for Windows) buffers, the buffer size and maximum is perhaps best not according to data sets are collected. __

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  What is the size of your swap file? increase the size and place it in the root of your systemdrive!

  André "a programmer is just a tool that converts the caffeine in code" Deputy CLIP - http://www.winvistaside.de/

• The size of the SGA

  Work on version 11 GR 2.
  Why do I see different values when I run the following commands:
  
  SYS > select MySQL from v$ sga;
  

  MYSQL
  ----------
  778387456

  SYS > select sum (bytes) /(1024*1024) size_in_mb from v$ sgastat;
  

  SIZE_IN_MB
  ----------
  734.331284

  thank you

  Because 1 KB = 1024 bytes (not 1000 bytes)

  SQL > select 778387456 double /(1000*1000);

  778387456 /(1000*1000)
  ---------------------
  778.387456

  Edited by: oradba the 13.10.2011 10:17

• Indipendent SGA size "spfile error."

  Nice day
  
  I changed the size of the SGA Maximum via the EM console. system shows me to restart the database. When I restart data base 'Out of memory' error occurred. Then I start the database using this command "Startup pfile='/oracle/app/oracle/.../init.ora.205484214. The spfile database damaged or changed. Please suggest me how to restore this spfile.
  
  Thank you and best regards.

  start with pfile as database
  Startup pfile ='-';
  Create spfile from pfile ='-';

  "Not enough memory" because impose BONES limit SGA, see trace files and reduce SGA_TARGET and sga_max_size
  and commissioning

  Published by: dba84 on April 26, 2010 02:45