Maximum number of processes exceeded 150

Dear All,
I have modified my init file and set the processes to 300 but I still keep on getting the above error.
When I issue the statment :
Select * from v$parameter where name='processes'
I get the value 300.
Why does the system message show 150 ?
How can I alter this ?
I have stored procedures which return ref cursors to the calling environment which is JSP pages.
We are closing the resultsets where ever the stored procedure are being called as soon as the processing is over.
How can I overcome this problem ?
Thanks in advance.
Regds..ramki

Go to this page is explains what to look for
http://asktom.oracle.com/pls/ask/f?p=4950:8:10090713663713896110::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:5671284058977,

Similar Messages

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 Macwan

If 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

Java.lang.Exception: ORA-00020: maximum number of processes (150) exceeded?

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

ASM issue ORA-00020: maximum number of processes (%s) exceeded (DBD ERROR)

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 Desai

You 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-00020: maximum number of processes (%s) exceeded

nobody was able to log into the database. when I tried 'sqlplus / as sysdba' I got : ORA-00020: maximum number of processes 1000 exceeded
database is 11.2.0.2 with patch 12
I've bounced the database and increased the processes..
my question is.. is there a way to tell what the processes were? what machine they were coming from? in a log somewhere..
Since I was unable to log in, I couldn't tell what had happened.. who was causing it..
if it happens again.. is there a way to log it?
also, this machine has DataGuard to a standby system.. is it possible for something to go wrong with dataguard and cause this?

>
my question is.. is there a way to tell what the processes were? what machine they were coming from? in a log somewhere..
Since I was unable to log in, I couldn't tell what had happened.. who was causing it..
if it happens again.. is there a way to log it?
also, this machine has DataGuard to a standby system.. is it possible for something to go wrong with dataguard and cause this?
>
You have only treated the symptom and not fixed the cause. As fellow members said, you could kill some "non-critical" processes and log in to the database.
But you will have to find out why there were so many processes in place. I am sure you might have set the definite number of processes after your planning before you went live. If you suddenly see too many processes, you will have to find out why and where they are coming from. Also check if there are any rogue processes.
To find out if there are any processes which have no sessions attached
select spid from v$process where addr not in (select paddr from v$session);
To answer your question, data guard shouldn't be affected by this. Nor would dataguard cause this issue in primary.
Fix this processes issue before it's too late. Otherwise, there will be a situation when you will have to keep increasing the processes until you hit the OS limit
Regards
Venkat

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

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
Prasanth

Hi 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

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
Jarek

With 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.

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.

ORA-00020: maximum number of processes (25) exceeded ... uh?

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
null

Cristian 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

Number of processes exceeds maximum limit

Normally how many process we need to put in init.ora.
My database currently has processes=100 so Obviously sessions=(100 X 1.1)+5=115.
Some times we use to get Number of processes exceeds more than 100.
What does it mean. What is the preferable value for processes.
I have a thought to put Processes=300.
Regards,
Ganesh.

Dear Ganesh,
When you are getting the "Processes exceeded" error, your Oracle server is letting you know that the number of operating system processes has exceeded 100.
Go ahead and set:
processes = 250
in your INIT.ORA file. You have to then shutdown and restart the database for the changes to take effect.
Ciao.
null

Maximum no of processes exceeded

I am using Oracle 8.1.6.3 database and OC4J as webcontainer.
I am getting following error on server side and I have clue why I am getting this.
java.sql.SQLException: ORA-00020: maximum number of processes (200) exceeded
SQL Error: java.sql.SQLException
java.sql.SQLException: ORA-00020: maximum number of processes (200) exceeded
There are lot of complaints like that and when I run load test then users start failing and can not access the pages. Following is the entry in data-sources.xml for this application
class="oracle.jdbc.pool.OracleDataSource"
          name="jdbc/pool/OracleDS2"
          location="jdbc/ConnectionDS2"
          source-location="jdbc/OracleCoreDS2"
          pooled-location="jdbc/pool/OracleDS2"
          url="jdbc:oracle:thin:@machine:1521:development"
          username="user"
          password="password"
          min-connections="3"
          max-connections="50"
          wait-timeout="10"
          xa-location="jdbc/xa/OracleXADS2"
          ejb-location="jdbc/OracleDS2"
          connection-driver="oracle.jdbc.driver.OracleDriver"
          inactivity-timeout="30"
     />
Please help me out. I also noticed that my connection pooling is not working the way I expected. Once there is no one accessing application I thought that time I should have 3 connections but I dont have that no. some time I have 0 and some time I have anyother no.
Thanks in advance for help.
Faizan

Avi -- Some responses embedded below. Also, we do need to expand the documentation in this area. You can also
look at the JDBC documentation for the Oracle9i Database. It has a JDBC book and describes Oracle data sources in
there. An OTN link is:
http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/java.920/a96654/connpoca.htm#1056354
Jeff,
I may have missed something, but all I found in the documentation regarding
"Caching Schemes" was a single paragraph:
http://otn.oracle.com/docs/products/ias/doc_library/90200doc_otn/web.902/a95879/ds.htm#1006044
I know that I can experiment with my "data-sources.xml" file, and I can
look at the relevant DTD, but I would really much prefer some more detailed
information. So yes, you could say I'm being lazy, but I would really
appreciate it if you answered the following questions:
1. Can the "cacheScheme" property be used with any type of data source,
or only with the "com.evermind.sql.OrionCMTDataSource"?I usually only work with about the com.evermind.sql.OrionCMTDataSource. According to the docs it should be available
with any pure Oracle data soruces that implement the connection caching.
2. What is the default value for "cacheScheme" (or isn't there one)?The default value in this case is DYNAMIC_SCHEME which will continue to try to get connections for you even when it
exceeds the maximum connections specified.
3. What are the differences between the various values (DYNAMIC_SCHEME,
FIXED_WAIT_SCHEME and FIXED_RETURN_NULL_SCHEME)?DYNAMIC_SCHEME -- Creates a new connection if you need one regardless of max connections.
FIXED_WAIT_SCHEME -- Will wait for a connection to become available.
FIXED_RETURN_NULL_SCHEME -- Will return null if a connection is not available.
4. What other "properties" are there?The only properties I generally deal with are the caching schemes and the link properties for 2PC configuration. There
can be others based on your data source implemention.
Thanks (in advance :-),
Avi. You're welcome. BTW, your not lazy, just time challenged like the rest of us.
Thanks -- Jeff

PAB maximum number of entries exceeded

Hi, we are an ISP and some user say he's having the message "maximum number of entries exceeded" when tries to create a new contact in his address book in webmail.
I did my research and find my user has 500 contacts and also find that using "configutil" to modify the parameter local.service.pab.maxnumberofentries can solve the problem
So i did it:
/jes/bin/SUNWmsgsr/sbin/configutil -o local.service.pab.maxnumberofentries -v 1000
Now if i tipe
/jes/bin/SUNWmsgsr/sbin/configutil -o local.service.pab.maxnumberofentries
I get
1000
The i restarted LDAP:
/jes/bin/SUNWldap/slapd-users/restart-slapd
Then refreshed the instances by tipping:
/jes/bin/SUNWmsgsr/sbin/refresh
Refreshing store server 787 ... done
Refreshing imap server 788 ... done
Refreshing pop server 789 ... done
Refreshing http server 790 ... done
Refreshing sched server 791 ... done
Then i restarted webmail and nothing seems to happens because the user stills getting the same error when trying to create another contact: "maximum number of entries exceeded"
What am i missing? what am i doing wrong?
Thanks for the help

rpocamilo wrote:
So it hanged out and says timeout and i had to do kill -9 Please note that if a store process hangs (imapd/ims-master/imexpire/stored/popd and mshttpd in MS6.2 and below) and you need to manually kill it (e.g. as you have above) then you must restart the entire store otherwise orphan database locks will be left behind and you will find that users will have trouble accessing accounts and store utilities can hang etc.
So you need to run:
./stop-msg; ./start-msgRegards,
Shane.

How to change the maximum number of process per user in BW ?

Hi,
Do you know how to change the maximum number of process allowed per user ?
With RSRT we can customize the number of process per query but I don't know where we can customize the maximum number of process per user.
In fact, my production environment reach always the max number of process available in SM50...
Thanks a lot

Hi,
A user is not have the No. of processor but a work process can handle N No. of users. If a user hit any transaction v acn say from a list of N worl proceesor which has been taken the work.
Correct if I am wrong.
Regards
Syed.

Install HRCS9.0 and PT8.53 with Linux Issue: the files intiPT853.ora and initHRCS90.ora: maximum number of DB_FILES exceeded

Folks,
Hello. I have installed PeopleTools 8.53 with Oracle Linux 5.10 successfully. The entire PeopleTools runs correctly in browser at the beginning.
After I set up HCM and Campus Solution 9.0 Database Instance named HRCS90 in Linux successfully, PeopleTools 8.53 Database Instance PT853 cannot be mounted. Its error message is below:
SQL> startup
ORACLE instance started.
Total System Global Area 538677248 bytes
Fixed Size                  2146024 bytes
Variable Size             528482584 bytes
Database Buffers            4194304 bytes
Redo Buffers                3854336 bytes
ORA-00059: maximum number of DB_FILES exceeded
In the file /home/user/OracleDB_Home/dbs/initPT853.ora, its parameter db_files has 3 values: small 400, medium 1021 and large 1500. The initial value is 1021 and it works correctly at the beginning. But after set up another instance HRCS90, the above error message comes up and instance PT853 cannot mounted. I change the value of db_files from 1021 to 1500 in the file initPT853.ora and restart OS Linux. But get the same error as below:
SQL> startup
ORACLE instance started.
Total System Global Area 538677248 bytes
Fixed Size                  2146024 bytes
Variable Size             528482584 bytes
Database Buffers            4194304 bytes
Redo Buffers                3854336 bytes
ORA-00059: maximum number of DB_FILES exceeded
In the file /home/user/OracleDB_Home/dbs/initHRCS90.ora, its parameter db_files has 3 values: small 80, medium 400 and large 1500. I use db_files=400 and it works correctly. I start up instance HRCS90 right after the above error message as below:
SQL> shutdown immediate
ORA-01507: database not mounted
ORACLE instance shut down.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[user@userlinux bin]$ export ORACLE_SID=HRCS90
[user@userlinux bin]$ ./sqlplus / as sysdba
SQL*Plus: Release 11.1.0.6.0 - Production on Sat Nov 23 12:40:02 2013
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 538677248 bytes
Fixed Size                  2146024 bytes
Variable Size             528482584 bytes
Database Buffers            4194304 bytes
Redo Buffers                3854336 bytes
Database mounted.
Database opened.
SQL> select * from psdbowner;
DBNAME   OWNERID
HRCS90     MYNAME
SQL>
As we see above, the instance HRCS90 works corretly and PT853 cannot start up. The parameter DB_FILES of the file initPT853.ora has an issue.
My question is:
Because 1021 and 1500 are not enough to startup instance PT853, what value should be used for DB_FILES of the file initPT853.ora ?
Thanks.

user8860348 wrote:
Folks,
Hello. I have installed PeopleTools 8.53 with Oracle Linux 5.10 successfully. The entire PeopleTools runs correctly in browser at the beginning.
After I set up HCM and Campus Solution 9.0 Database Instance named HRCS90 in Linux successfully, PeopleTools 8.53 Database Instance PT853 cannot be mounted....
I'm sorry, but I don't understand what does "Instance" mean here.
>In the file /home/user/OracleDB_Home/dbs/initPT853.ora, its parameter db_files has 3 values: small 400, medium 1021 and large 1500.
Are you not using a spfile ? Does the file contain really the 3 values ? What is the last ? Have you checked the value in the database side "show parameter db_files" ?
>But after set up another instance HRCS90, the above error message comes up and instance PT853 cannot mounted
Again, I have no idea what it means.
>In the file /home/user/OracleDB_Home/dbs/initHRCS90.ora, its parameter db_files has 3 values: small 80, medium 400 and large 1500. I use db_files=400 and it works correctly.
Again, 3 values ? What is the last ? Have you checked the value in the database side "show parameter db_files" ?
>As we see above, the instance HRCS90 works corretly and PT853 cannot start up. The parameter DB_FILES of the file initPT853.ora has an issue.
Again, I don't understand what are HRCS90 and PT853 exactly. Cannot help.
>Because 1021 and 1500 are not enough to startup instance PT853, what value should be used for DB_FILES of the file initPT853.ora ?
I'm sure, you don't have an issue with this parameter, 1500 files in the database is quite huge number. I built a demo recently, the default value 1021 was ok for me. You should have done something wrong somewhere.
Nicolas.

Maximum number of processes exceeded 150

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