Oracle IIS number of processes grows to big
I am supporting a bad, packaged ASP program that runs under IIS.
IIS 4
NT 4
Oracle 8.1.6.0
After a few hours the number of sessions is about 25, which is ok, but the number of processes exceeds the limit (240).
We are investigating how this can be, but in the meantime I would like to automatically kill processes that are waiting, or belong to inactive sessions.
(By the way, is there a way to timeout sessions? or processes?)
My next task here is to see if any of them are locked, but I don't think so -- I think the web application is leaving them as orphans.
Thanks.
John Frame
[email protected]
A bit more news. Basically the problem is identified by the fact that there are about 150 records in V$PROCESS that do not match to anything in V$SESSION.
I will reply when there is news about what is causing this.
You are right about MTS, if it is used in an IIS/ASP environment it will reduce the Oracle memory usage to about 4% of previous numbers. Amazing, MTS has connection pooling for cheap asp pages! (set it to multi, not dedicated).
[email protected]
Similar Messages
-
Maximim Number of process and session can set in oracle 10g
my os is 32 bit windows and ram size is 10gb and i am using AWE_WINDOW_MEMORY setting and now my sga is 6 gb.what would be Maximim Number of process and session can set in oracle 10g database
mithun wrote:
my os is 32 bit windows and ram size is 10gb and i am using AWE_WINDOW_MEMORY setting and now my sga is 6 gb.what would be Maximim Number of process and session can set in oracle 10g databaseThe maximum number of sessions is controlled by your database's SESSIONS parameter. This value is most derived from the PROCESSES parameter. You cannot exceed this number of sessions unless you raise the parameter value.
If your database is configured to handle enough sessions, then Oracle can literally handle thousands of simultaneous connections, provided your database server also has enough resources to handle this number of connections. You will want to implement Oracle's Shared Server connections so that multiple connections share a pool of processes on the database server. This minimizes the resource consumption used by the connections.
Read the following document as well.
http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/manproc.htm
Thanks -
ORA-00020: maximum number of processes 1000 exceeded
Hello,
Oracle 10.2.0.4.0
O/S: Windows Server 2003-64 bits
RAM: 32Gb
Instance: opext
show SGA
Total System Global Area 10284433408 bytes
Fixed Size 2180960 bytes
Variable Size 1574353056 bytes
Database Buffers 8690597888 bytes
Redo Buffers 17301504 bytes
Today at 8:01 am we've got this error:
ORA-00020: maximum number of processes 1000 exceeded
That incident was reported in a trace file (opext_ora_8240.trc):
Dump file c:\oracle\product\10.2.0\admin\opext\bdump\opext_ora_8240.trc
Tue Jul 31 08:01:03 2012
ORACLE V10.2.0.4.0 - 64bit Production vsnsta=0
vsnsql=14 vsnxtr=3
Oracle Database 10g Release 10.2.0.4.0 - 64bit Production
Windows NT Version V5.2 Service Pack 2
CPU : 8 - type 8664, 1 Physical Cores
Process Affinity : 0x0000000000000000
Memory (Avail/Total): Ph:18773M/32767M, Ph+PgF:66964M/80966M
Instance name: opext
Redo thread mounted by this instance: 1
Oracle process number: 0
Windows thread id: 8240, image: ORACLE.EXE
ORA-00020: maximum number of processes 1000 exceeded
Died during process startup with error 20 (seq=212441)
OPIRIP: Uncaught error 20. Error stack:
ORA-00020: maximum number of processes (1000) exceededThis was the first time in three years that happened an incident like this. Due my Windows server allows me to setup processes and sessions with a very high value, I did it when configuring this database for the first time.
select resource_name,initial_allocation, limit_value from V$RESOURCE_LIMIT;
RESOURCE_NAME INITIAL_ALLOCATION LIMIT_VALUE
processes 1000 1000
sessions 1105 1105
transactions 1215 UNLIMITEDI would like to know what application or process made that my database exceeds 1000 processes. I read that one possiblity is that there's a web app that open many connections to database and doesn't close them.
In my listener.log, I got this at 08:05 am:
31-JUL-2012 08:05:41 * service_update * opext * 0
31-JUL-2012 08:05:47 * (CONNECT_DATA=(SERVICE_NAME=opext)(CID=(PROGRAM=c:\windows\system32\inetsrv\w3wp.exe)(HOST=SRVXXX)(USER=NETWORK?SERVICE))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.1)(PORT=36578)) * establish * opext * 0
31-JUL-2012 08:05:47 * service_update * opext * 0
31-JUL-2012 08:05:47 * (CONNECT_DATA=(SERVICE_NAME=opext)(CID=(PROGRAM=c:\windows\system32\inetsrv\w3wp.exe)(HOST=SRVXXX)(USER=NETWORK?SERVICE))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.1)(PORT=36579)) * establish * opext * 0
31-JUL-2012 08:05:47 * (CONNECT_DATA=(SERVICE_NAME=opext)(CID=(PROGRAM=c:\windows\system32\inetsrv\w3wp.exe)(HOST=SRVXXX)(USER=NETWORK?SERVICE))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.1)(PORT=36580)) * establish * opext * 0
31-JUL-2012 08:05:47 * (CONNECT_DATA=(SERVICE_NAME=opext)(CID=(PROGRAM=c:\windows\system32\inetsrv\w3wp.exe)(HOST=SRVXXX)(USER=NETWORK?SERVICE))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.1)(PORT=36581)) * establish * opext * 0
31-JUL-2012 08:05:47 * (CONNECT_DATA=(SERVICE_NAME=opext)(CID=(PROGRAM=c:\windows\system32\inetsrv\w3wp.exe)(HOST=SRVXXX)(USER=NETWORK?SERVICE))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.1)(PORT=36582)) * establish * opext * 0
31-JUL-2012 08:05:47 * (CONNECT_DATA=(SERVICE_NAME=opext)(CID=(PROGRAM=c:\windows\system32\inetsrv\w3wp.exe)(HOST=SRVXXX)(USER=NETWORK?SERVICE))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.1)(PORT=36583)) * establish * opext * 0
31-JUL-2012 08:05:47 * (CONNECT_DATA=(SERVICE_NAME=opext)(CID=(PROGRAM=c:\windows\system32\inetsrv\w3wp.exe)(HOST=SRVXXX)(USER=NETWORK?SERVICE))) * (ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.1)(PORT=36584)) * establish * opext * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
Host SRVXXX is a server where a web app is and 192.168.1.1 is our firewall. May I think that this server was the one that made so many connections?
I checked alert.log, trc file and listener.log. What else can I check to determine what was the cause of this incident?user521219 wrote:
Host SRVXXX is a server where a web app is and 192.168.1.1 is our firewall. May I think that this server was the one that made so many connections?
I checked alert.log, trc file and listener.log. What else can I check to determine what was the cause of this incident?check IIS logs
It could result from Denial of Service attack or trojan or virus infecting webserver -
Maximum number of processes (100) exceeded
Hi!
I've some php application working with oracle XE with oci8 driver. Application works fine, but with time number of running oracle processes grows and when it reaches 100, it is impossible to to backup:
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04005: error from target database:
ORA-00020: maximum number of processes (100) exceeded
To do a backup I need to restart oracle.
What is interesting, number of processes doesn't affect php application. I think php can reuse existing processes. It is possible that RMAN will reuse existing processes?
Or is there any way to close unneeded processes ?
best regards
JarekWith 11g XE, use DRCP connection pooling for your PHP connections. See The Underground PHP and Oracle Manual
Use non-DRCP connections for other jobs.
It sounds like you are using persistent PHP connections. This is good for performance but if you have a large number of PHP/Apache processes you will reach the DB limits, as you've found. You can tune the number of connections to suit the largest possible number of mid-tier processes in your system. Do this with the 'processes' parameter in the DB. See the "Configuring the Database For Testing" section in the testing chapter of The Underground PHP and Oracle Manual. You could also reduce the number of Apache processes that start, or be more aggressive in expiring them.
For follow up PHP questions, use the PHP OTN forum. -
When i run my web-application with the embedded OC4J server, the following error message is prompted:
java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded
void MyFolder.objects.MyObject.<init>(oracle.jbo.ApplicationModule, java.lang.String, java.lang.String, javax.servlet.http.HttpServletRequest)
void MyFolder.servlet.MyServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
boolean com.evermind.server.http.HttpRequestHandler.processRequest(com.evermind.server.ApplicationServerThread, com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
void com.evermind.server.http.HttpRequestHandler.run(java.lang.Thread)
void com.evermind.util.ThreadPoolThread.run()
Question:
- What is the cause of this error message? How to avoid?
- I intended to deploy my application to 9IAS server. Will the same problem occurs too?
Thanks for your reply!Hi Pig,
When i run my web-application with the embedded OC4J server, the following error message is prompted:
java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded
void MyFolder.objects.MyObject.<init>(oracle.jbo.ApplicationModule, java.lang.String, java.lang.String, javax.servlet.http.HttpServletRequest)
void MyFolder.servlet.MyServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
void javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.invoke(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
void com.evermind.server.http.ServletRequestDispatcher.forwardInternal(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse)
boolean com.evermind.server.http.HttpRequestHandler.processRequest(com.evermind.server.ApplicationServerThread, com.evermind.server.http.EvermindHttpServletRequest, com.evermind.server.http.EvermindHttpServletResponse, java.io.InputStream, java.io.OutputStream, boolean)
void com.evermind.server.http.HttpRequestHandler.run(java.lang.Thread)
void com.evermind.util.ThreadPoolThread.run()
Question:
- What is the cause of this error message? How to avoid?.
From the Oracle error message documentation:
ORA-00020 maximum number of processes (string) exceeded
Cause: All process state objects are in use.
Action: Increase the value of the PROCESSES initialization parameter.
Another alternative approach may be to configure your Connection pool and/or your ApplicationModule pool to optimize the use of
database connections and/or restrict the number of database connections used by the application. For example, if your application
has declared many root ApplicationModules (i.e. more than one ApplicationModule pool is in use) then it may help to enable the
jbo.doconnectionpooling switch so that each ApplicationModule instance in the pools does not maintain a dedicated database
connection while not in use. Another alternative if you are using the BC4J connection pool (not a JDBC datasource) may be to
restrict the number of connections the pool can create to < 150 with the jbo.maxpoolsize switch. However, please note that this
may have an impact on throughput.
- I intended to deploy my application to 9IAS server. Will the same problem occurs too?.
This is a database issue. So, yes.
Hope this helps.
JR -
Hello all,
Windows XP SP 3 32 bit
Java(TM) Platform 1.6.0_11
Oracle IDE 3.1.07.42
Versioning Support 3.1.07.42
Installed SQL Developer 3.1.07.42 in a fresh directory. Imported Connections from SQL Dev. 3.0. Connected to a 9i/11g-database and did a select on an ordinary table in the worksheet. Get an error in the Logging Page - Log Window:
Source: oracle.dbtools.raptor.controls.grid.ResultSetTableCellRenderer
Message: oracle.dbtools.raptor.controls.grid.ResultSetGridCell.computeDisplayValue(ResultSetGridCell.java:28)
All NUMBER-Fileds are displayed with "oracle.sql.NUMBER@...", for example "oracle.sql.NUMBER@lb5889c". And everytime i select a field in this table the Logging-Page grows (actually 3674 entries). And it's regardless which table i select. This error occurs also in the table-data-grid.
Can you help?
Thank you
MarkusHi Markus,
I usually download SQL Developer without the JDK, so I had to download sqldeveloper-3.1.07.42.zip to verify. Yes, in fact tzmappings and the zi are there, both when inspecting the archive and after performing unzip.
Something must have gone wrong with your download/unzip. Looking at various Java JDKs I have installed, or the Java that comes with Oracle 11.2.0.1, all have tzmappings and the zi directory. The file timestamps and the number of files in the zi directory may vary, but it should always be there in some form.
Regards,
Gary
SQL Developer Team -
How to set a limit on the number of processes a session can start?
I have an Oracle db version 10.2.0.4 running on Solaris 10. My parallel_max_servers parameter is set to 650 and the processes parameter is set to 700. But I don see one session that is spawning 129 processes and another one that is spwaning 65 processes. Is there a way to limit the number of processes that a session can spawn?
check processes
$ ps -ef | grep $ORACLE_SID|wc -l
SQL> select * from v$resource_limit where resource_name ='processes';
My parallel_max_servers parameter is set to 650 and the processes parameter is set to 700.
PARALLEL_MAX_SERVERS
specifies the maximum number of parallel execution processes and parallel recovery processes for an instance. As demand increases, Oracle increases the number of processes from the number created at instance startup up to this value.
Do you use query with parallel?
example:
-> create table xxx PARALLEL (degree 5)
-> select /*+ PARALLEL
if you don't use parallel on execution processes... so, your processes not increase ;)
By the way your db have limited proceses= 700 (Dedicated Server Processes) -
Hi All,
i am running 10.2.0.3 with ASM (10.2.0.3) on SunOS (solaris 5.9)
+ASM1> ps -ef | grep pmon
oraunity 6174 1 0 Jan 01 ? 298:37 ora_pmon_UNITYQ1
oraunity 6480 1 0 Dec 31 ? 84:21 asm_pmon_+ASM1
oraunity 6085 1 0 Mar 09 ? 127:05 ora_pmon_UNIINFQ1
oraunity 11442 1 0 Jan 01 ? 253:54 ora_pmon_UNIDWHQ1One of rdbms instanace UNIINFQ1 got some failuer due to archival error 'ORA-00257:Archiver error:connect internal only:until freed.'
To drill down that, i tried to log in to +ASM1 instance to see space utilization under ARCH destination
SQL> show parameter db_name
NAME TYPE VALUE
db_name string UNIINFQ1
log_archive_dest string +UNITY_DG1/UNIINFQ1/archi tried following to log in to +ASM1
UNITYQ1> export ORACLE_SID=+ASM1
+ASM1> echo $ORACLE_SID
+ASM1
+ASM1> export ORACLE_HOME=/unity-rc001-q/ora01/app/oracle/product/10.2.0/asm10g
+ASM1> echo $ORACLE_HOME
/unity-rc001-q/ora01/app/oracle/product/10.2.0/asm10g
+ASM1> sqlplus / as sysdba
SQL*Plus: Release 10.2.0.3.0 - Production on Wed Jun 10 00:44:35 2009
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected.
SQL> select * from v$instance;
select * from v$instance
ERROR at line 1:
ORA-01012: not logged onthen i did following
+ASM1> asmcmd
ORA-00020: maximum number of processes (%s) exceeded (DBD ERROR: OCISessionBegin)
[oraunity] mhs-clust5-qa:/unity-rc001-q/ora01/app/oracle/admin/UNIINFQ1/bdump:i have also noticed high number of BEQUETH connections to +ASM1 instance
+ASM1> ps -ef | grep +ASM1
oraunity 6486 1 0 Dec 31 ? 193:20 asm_lmon_+ASM1
oraunity 6533 1 0 Dec 31 ? 11:49 asm_ckpt_+ASM1
oraunity 6482 1 0 Dec 31 ? 108:29 asm_diag_+ASM1
oraunity 6527 1 0 Dec 31 ? 9:28 asm_mman_+ASM1
oraunity 6210 1 0 Mar 09 ? 8:03 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 6484 1 0 Dec 31 ? 7:40 asm_psp0_+ASM1
oraunity 6488 1 0 Dec 31 ? 221:17 asm_lmd0_+ASM1
oraunity 6480 1 0 Dec 31 ? 84:21 asm_pmon_+ASM1
oraunity 6529 1 0 Dec 31 ? 8:42 asm_dbw0_+ASM1
oraunity 6535 1 0 Dec 31 ? 6:45 asm_smon_+ASM1
oraunity 6523 1 0 Dec 31 ? 241:24 asm_lms0_+ASM1
oraunity 6531 1 0 Dec 31 ? 9:22 asm_lgwr_+ASM1
oraunity 6537 1 0 Dec 31 ? 9:03 asm_rbal_+ASM1
oraunity 6539 1 0 Dec 31 ? 14:36 asm_gmon_+ASM1
oraunity 6575 1 0 Dec 31 ? 45:59 asm_lck0_+ASM1
oraunity 6328 1 0 Jan 01 ? 15:08 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 7866 1 0 16:09:10 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 6941 1 0 16:24:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 11553 1 0 Jan 01 ? 42:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 5010 1 0 16:23:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 1171 1 0 16:21:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 26147 1 0 16:18:49 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 17948 1 0 16:14:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 16097 1 0 16:13:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 19867 1 0 16:15:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 14221 1 0 16:12:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 25640 4784 0 02:36:15 pts/4 0:00 grep +ASM1
oraunity 8513 1 0 16:09:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 23732 1 0 16:17:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 7864 1 0 16:09:09 ? 0:19 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 3109 1 0 16:22:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 27439 1 0 16:19:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 10400 1 0 16:10:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 5588 1 0 16:23:49 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 16667 1 0 16:13:48 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 21832 1 0 16:16:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 12308 1 0 16:11:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 29330 1 0 16:20:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
oraunity 25581 1 0 16:18:30 ? 0:00 oracle+ASM1 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))Can anyone help me to solve this issue without shutting down +ASM1. (this instance is used by rest 3 databases as well..so down time is not feasible)
Regards,
Bhavik DesaiYou should check alert log file on database like Alex told you.
And please post Error ;)
But If You can access +ASM, Or ...by the way... if you stop database ... try to check ASM diskgroup.
$ export ORACLE_SID=+ASM1
$ sqlplus / as sysdba
SQL> set lines 130
SQL> set pages 10000
SQL> select NAME, TOTAL_MB, FREE_MB from v$asm_diskgroup;
If your DISKGROUPs for archivelog on DB full... backup or delete them
(please start database mount mode)
$ export ORACLE_SID=DB1
$ sqlplus / as sysdba
SQL> startup mount;
SQL> show parameter log_archive_dest
backup archivelog
$ rman target /
RMAN> backup ARCHIVELOG ALL DELETE INPUT format 'ARCH_%d_%U' ;
or delete
$ rman target /
RMAN> delete ARCHIVELOG ALL ;
After that ...
$ sqlplus / as sysdba
SQL> alter database open
This justs my suggestion, if your database has the problem with ASM diskgroup full ... because archvielog...
By the way... please post your result from ASM query and alert log file
Good Luck -
ORA-Error: Maximum number of Processes exceeds
Hi,
Today we got one Oracle error: Maximum number of Processes exceeds while connects to our Oracle Database.
We have application running on our DB, which have 50 threads running and making connection to Oracle Schema.
In our init.ora file the Processes Parameter is set to 50.
But we also have another init<Schema Name>.ora file which has Processes Parameter as 50.
When I search on this error, I got that it is due to no. of user processes on Oracle instance.
What are these user processes exactly?
If we set the Processes Parameter as 150, and we have RAC environment with 3 Cluster, does it means we have 150*3 processes can run at a time.
The other doubt I have is that: Is this parameter is instance based, SID based or cluster based?
Please provide some input on this.
Thanks in Advance.
Manoj MacwanIf you don't issue
alter system set processes=150 scope=both sid='<your instance 1>'
all instances will be allowed to fork 150 processes.
The other poster is incorrect.
Sybrand Bakker
Senior Oracle DBA -
ASM maximum number of processes (300) exceeded
Hi Everyone,
My Oracle database is 11g r2(11.2.0.2.0) and linux version is redhat 5.5.
In ASM one of our diskgroup getting full. so we added 5 disks to diskgroup with size of 545 GB lun(disk) each..succesfully added diskgroups but while rebalancing is going on ASM instance got stuck and node got hanged up and from application side process got stuck up and thrown with the below error from alert log, for temporariy solution we rebooted the first node.
************************************************************ERROR**************************************************************************
ORA-00240: control file enqueue held for more than 120 seconds
Please check inst 1's alert log for more information on the blocker including a possible ORA-00494 and related incident logs
ORA-00240: control file enqueue held for more than 120 seconds
*ORA-00494: enqueue [CF] held for too long (more than 900 seconds) by 'inst 1, osid 377'*
Please check inst 0's alert log for more information on the blocker including a possible ORA-00494 and related incident logs
ORA-00240: control file enqueue held for more than 120 seconds
ORA-00240: control file enqueue held for more than 120 seconds
*ORA-00494: enqueue [CF] held for too long (more than 900 seconds) by 'inst 1, osid 3733'*
ORA-15055: unable to connect to ASM instance
ORA-00020: maximum number of processes (300) exceeded
*ORA-00494: enqueue [CF] held for too long (more than 900 seconds) by 'inst 1, osid 565'*
ORA-15055: unable to connect to ASM instance
ORA-00020: maximum number of processes (300) exceeded
Please check inst 1's alert log for more information on the blocker including a possible ORA-00494 and related incident logs
******************************************************ERROR*********************************************************************************
can you please let us know the solution for the above error
Thanks in advance
Thanks & Regards
PrasanthHi Jos
--> How to calculate ASM Parmaeter process? with which view i can get the information?
-->I cheked with below command by connecting ASM instance show below like 300 process .But while doing any operation on ASM crossing 300+ connection of process.
SQL>show parameter process
NAME TYPE VALUE
processes integer 300
--> I confirmed by checking by ps -aef|grep beq command in linux it shown 380 beq connection.
--> Power limit i given 5 while adding disks to diskgroup..!
--> long back ago we changed ASM Parameter process value to 300 in place of 100.
--> A question like while rebalancing is going node got hanged got alert error like ASM MAXIMUM PROCESS GOT EXCEED so no operation were allowed to the node, so we rebooted the node after rebooted node came in to normal state and able to do all operation normally..but my question is that rebalance is completed succesfully or not?
--> For this issue we need to apply any Patch to overcome this issue in future while doing any operation on ASM
Thanks a lot for your quick reply.
Thanks & Regards
Prasanth -
hello all,
how do I change the maximum number of processes in oracle ?
and is there a limit ?
Thank You.Hi,
In your init.ora or config.ora, change the parameter PROCESSES. I haven't checked the Oracle book but I think the limit is 200.
John Taylor
null -
ORA-00020: maximum number of processes (500) exceeded
Problem Details:
In our Database we are getting huge number of open connection from remote system.
Let say, our application A and remote application name is B.
Some common users of application A are USER0, USER1, USER2.
Remote Application B uses USER0 to create views on application A's table through Database Link.
Those views (nearly 100) are accessed in application B at several places from the Java code.
Since those views are getting called almost all the times from the application B's code, DB link is in use almost all the time - holding many number of connections (check the first row of the query output).
Many times the open connections remaining high and any other application, users trying to connect to application A,
getting the ORA-00020 error.
Note :
1. Application B is very old application and does not use open DB link or close DB link.
2. Application B tried with "alter session close Database link xxx", it decrease the number of open connection but its degrading the performance of application B at large scale.
3. To cope up with this problem Application A recently incraesed the parameter process=500, but not sure if this limit can also be broken through Application B
Questions/Doubts:
1) What is best approach to handle this problem??
'alter session close database link xxx' is the only option from application B's point ??
What other approach can be taken??
2) We are not sure the risk associated with increasing the process parameter value ??
Appreciate your suggestion !!
SQL>conn / as sysdba
SQL> select substr(username,1,8),
substr(machine,1,11),
substr(module,1,40),
substr(osuser,1,7),
status,
count(1)
from v$session
group by username, machine, module, osuser, status;
USERNAME MACHINE STATUS OSUSER COUNT(1)
USER0 remotedb9 INACTIVE oracle 450
USER1 app_dev INACTIVE beaadmin 1
USER0 svr01test ACTIVE bdgp_dev 1
USER1 app_test INACTIVE bbk09 2
USER0 app_dev ACTIVE dj0494 1
USER1 app_test INACTIVE pd0269 2
USER2 app_test INACTIVE oracle 12
USER0 app_dev ACTIVE oracle 2
USER2 app_test INACTIVE www 8
USER2 dbr9db01 ACTIVE oracle 2
USER2 svr01dv INACTIVE bdgp_dev 1
USER0 app_dev INACTIVE scott 3
USER2 app_test INACTIVE clerk 2
USER2 moose ACTIVE john 2
USER2 titan.homer INACTIVE voipdu 1
NEWUSER floradbdv1 INACTIVE oracle 8
SYS app_test ACTIVE oracle 1
20 rows selected.
SQL>conn USER0@csmip_st
Enter password:
ERROR:
ORA-00020: maximum number of processes (500) exceeded
Warning: You are no longer connected to ORACLE.semmsl in Linux tells what the max number of processes are. You have to make sure this is equal to the process parameter of all instances plus 10.
It is usually in /etc/sysctl.conf
kernel.sem = 250 32000 100 128
SEMMSL
The SEMMSL kernel parameter is used to control the maximum number of semaphores per semaphore set.
Oracle recommends setting SEMMSL to the largest PROCESS instance parameter setting in the init.ora file for all databases hosted on the Linux system plus 10. Also, Oracle recommends setting the SEMMSL to a value of no less than 100.
SEMMNI
The SEMMNI kernel parameter is used to control the maximum number of semaphore sets on the entire Linux system.
Oracle recommends setting the SEMMNI to a value of no less than 100.
SEMMNS
The SEMMNS kernel parameter is used to control the maximum number of semaphores (not semaphore sets) on the entire Linux system.
Oracle recommends setting the SEMMNS to the sum of the PROCESSES instance parameter setting for each database on the system, adding the largest PROCESSES twice, and then finally adding 10 for each Oracle database on the system. To summarize:
SEMMNS = sum of PROCESSES setting for each database on the system
+ ( 2 * [largest PROCESSES setting])
+ (10 * [number of databases on system]
To determine the maximum number of semaphores that can be allocated on a Linux system, use the following calculation. It will be the lesser of:
SEMMNS -or- (SEMMSL * SEMMNI)
SEMOPM
The SEMOPM kernel parameter is used to control the number of semaphore operations that can be performed per semop system call.
The semop system call (function) provides the ability to do operations for multiple semaphores with one semop system call. A semaphore set can have the maximum number of SEMMSL semaphores per semaphore set and is therefore recommended to set SEMOPM equal to SEMMSL.
Oracle recommends setting the SEMOPM to a value of no less than 100.
App B could try using connection pooling or something to reduce the number of connections to the DB. -
Hi all,
i have a scenario where in i am updating text from standard R/3 and this datasource is updating two text objects in BW
the data is coming fast from R/3 till PSA but its runing two hours and then its giving a short dump and the message is LOAD_LOST_X but if i try with some selections its fine the data is loading very fast and also i am trying to load only 7000 records and i also have the same problem with my business content installation when ever i do some big installations even in back ground its giving a dump. but if i go with single objects its going fine....(what could be the reason is it basis related.)
what could be the reason, is it something related to number of process we have in BW then can somebody tell me number of process should a ideal BW system should have and how to check.....how many we have and also can somebody give me some performance investigation tips and solution to solve it.
Thanks and regards
NeelNeel,
check the timeout settings for background processes and also is this due to a timeout or somethign else - check the short dump in ST22 and figure out the exact reason for the failure - is it because the DB update process is taking too long ? it could be something to do with the DB also..
Arun
Hope it helps... -
Hello,
I'm trying to run a distributed simulation (13 programs x host,
16 hosts) that uses oracle (normally in an HP) against oracle on
linux.
I can't start all the programs, after about 20 clients (+-) no
other program will come up, and if i try to log to oracle with
sqlplus i get:
ERROR:
ORA-00020: maximum number of processes (25) exceeded
Is this a static limit imposed in the version oracle is
distributing for testing purposes?
Also, i notice that one server process is started for each client
program. So the distributed version doesn't support multithreaded
servers? Or may be i configured it wrong?
-cristian
nullCristian Ferretti (guest) wrote:
: Oleg (guest) wrote:
: : : ORA-00020: maximum number of processes (25) exceeded
: : ------>Check PROCESSES= line in you init<SID>.ora file. After
: you
: : change it, you have to restart database.
: : : Also, i notice that one server process is started for each
: : client
: : : program.
: : -----> Check the following parameters in the same file:
: : mts_dispatchers, mts_max_dispatchers, mts_servers,
: : mts_max_servers, mts_multiple_listeners, mts_listener_address
: processes=400
: mts_dispatchers="tcp,16"
: mts_dispatchers="ipc,1"
: mts_max_dispatchers=32
: mts_servers=16
: mts_max_servers=32
: mts_service=oralinux
: sessions=384
: Copyed them from the hp oracle config.
: but:
: [oralinux@toaster dbs]$ svrmgrl
: Oracle Server Manager Release 3.0.5.0.0 - Production
: (c) Copyright 1997, Oracle Corporation. All Rights Reserved.
: Oracle8 Release 8.0.5.0.0 - Production
: PL/SQL Release 8.0.5.0.0 - Production
: SVRMGR> connect internal
: Connected.
: SVRMGR> startup
: ORA-00101: invalid specification for system parameter
: MTS_DISPATCHERS
: ORA-00102: network protocol
(ADDRESS=(PARTIAL=YES)(PROTOCOL=tcp))
: cannot be used by dispatchers
: SVRMGR>
Erase all MTS_%
parameters from your init.ora files and try only with
processes=xxx
null -
Hello,
I have Oracle 9.2.0.7 on Windows. How do you increase the "Maximum Number of Processes"?
Thank you.SQL> show parameter process
processes integer 250
SQL> show parameter session
sessions integer 280
Since this is a static parameter you have to change it in
spfile or init.ora and bounce the database.
SQL> alter system set processes=300 scope=spfile;
System altered.
SQL> alter system set sessions=300 scope=spfile;
System altered.
If you try to set these parameters in memory you will get
ORA-02095: specified initialization parameter cannot be modified
Interestingly enough if you set the number of processes
the number of sessions will be auto calculated for you.
Example:-
Once you set the number of processes to 300, if you try
to set the number of sessions to 200 it will still be
value of 345.
Processes->300
Sessions -> 345
Maybe you are looking for
-
I have an account that is used by several people with ipod touches. Someone spent $50 on an app and no one will confess. How can I figure out who's ipod it was from the internet? or What is an email or phone number to contact a REAL person from Apple
-
Cannot Run aperture 2.1.4 with Yosemite
Unfortunately after updating to Yosemite found that Aperture 2.1.4 that was running OK with Maverick is now an unsupported Software. How can Apple do this? The installation process was not quick so I think that the developers should have a bit of the
-
I cannot any attachment with Mail. Either there is no attachment when the recipient open the email or the content of the attachment is the same as the content of the email. It happens between Mac computers. Any solutions
-
Coherence exception - This service timed-out due to unanswered handshake request
Hi, We are getting weird errors in production with below exception - Oracle Coherence GE 3.5.1/461 <Error> (thread=DistributedCache, member=2): validatePolls: This service timed-out due to unanswered handshake request. Manual intervention is require
-
.aep files will not import with AE CS6
Ok, I'm doing something unique here maybe. I'm trying to Network Render a project because it takes about 8 hours or so to render in Premiere. My workflow consist of a number of dymanically linked AE files that make up some titles, info headers, and s