AMM On HP-UX V3 Shared Memory Deallocation?
May 13, 2013
When investigating memory usage on HP-UX V3 for my oracle database 11.2.0.3.4 which use AMM, it seems to me that system is not shifting shared SGA memory to private PGA memory when needed but it allocate other memory.The shared memory don't shrink all the memory_target id allocated. VSZ = RSZ
To test i have used this script which will allocate memory in process PGA.
create or replace package demo_pkg
as
type array is table of char(2000) index by binary_integer;
g_data array;
end;
[code]...
I have done the same test on a linux machine (Red Hat Enterprise Linux Server release 6.3) and the size of the POSIX shared memory switched (/dev/shm) to the PGA like demonstrated by Tanel Poder in his blog [URL]...
Related conf :
lock_sga=FALSE
pre_page_sga=FALSE
pga_aggregate_target 0
sga_target 0
memory_target 5553258496
memory_max_target 5553258496
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Sep 21, 2010
How to overcome from the below error.
Database Error-ORA-04031:unable to allocate 76320 bytes of shared memory("shared pool","SELECT/*+Norewrite*/DIST...","sql area","kkmevw:view_txt")
Here I attached that error.
Attached File(s)
Disco_Error_1.jpg ( 49.03K )
Number of downloads: 3
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Mar 9, 2012
When i try to extract create statement of table i get below error message.
SQL>
SQL> set heading off
SQL> set pagesize 0
SQL> set long 1000000
SQL> set feedback off
SQL> select
2 dbms_metadata.get_ddl( 'TABLE','CATALOG_TBL','JACK')
3 from
4 dual
5 /
ERROR:
ORA-04031: unable to allocate 104 bytes of shared memory ("shared pool",
"SELECT
/*+rule*/ SYS_XMLGEN(...","SQLA^fc8f5280","qecsub : qkxrPXformQbc")
ORA-06512: at "SYS.DBMS_METADATA", line 2625
ORA-06512: at "SYS.DBMS_METADATA", line 2668
ORA-06512: at "SYS.DBMS_METADATA", line 2983
ORA-06512: at "SYS.DBMS_METADATA", line 3897
ORA-06512: at "SYS.DBMS_METADATA", line 5678
ORA-06512: at line 1
Note:
----
I am executing this command from another user 'DEMO' which has got DBA privilege.
how to fix this error and extract the create table statement.
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Jan 25, 2010
I am facing a problem as listed below:
$sqlplus /nolog
SQL>conn /as sydba
connected.
SQL>conn upt/upt
not connected
ora-01034 not available
ora-27101 shared memory realm doesntnot exists
linux error-2 no such file ...
SQL>...
UPT is the user in which our data resides.
wat cud be the problem??????
I tried increasing sizes in INIT.ORA.... listener,tns is OK
.bash_profile of ORACLE user is also correct.
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Mar 8, 2013
I download Oracle Database Express Edition 11g EX.install in my windows XP laptop.run SQL command (following the start guide)
try to connect to database.
I go the error message.
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Process ID: 0
Session ID: 0 serial number: 0
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Jul 2, 2012
My environment is Windows XP PC
Ram - 1 GB
Oracle version 8.1.7.0.0
Enter user-name: sys as sysdba
Enter password:
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Even i start the Oracle service through the services.msc there are no new entries seen in alert log file of the database.I even changed the init DBNAME. ora file but that file is not being read. what is the normal procedure used by oracle 8i while starting the DB ? Which file should be edited if i come across shared realm memory error.
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Jan 13, 2013
I'm getting the following error when i shutdown or startup the db,
SQL> shutdown immediate;
ORA-00604: error occurred at recursive SQL level 1
ORA-04031: unable to allocate 264 bytes of shared memory ("shared pool","unknown object","PCUR^18465427","kglob")
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Jun 19, 2013
I am seeing the following error message in alert.log (ORA-04031: unable to allocate 32 bytes of shared memory ) and my database goes into hung state and wont let any new sessions to connect and old sessions just hung with no response. i have to kill the instance to come out of this problem.
I am running 11.2.0.3 on AIX and have memory_target=35GB. I would like to know what approach to take to find out the root cause of this? btw - does AWR show if memory was under pressure and what SQL's were consuming more memory just before the problem surface?
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Jan 3, 2005
I'm using Oracle 8i Enterprise Edition. When i try to connect my database using Internal user, i m getting messege "Shared Memory Realm Does Not Exist"
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Aug 25, 2010
I keep getting the error message- ORA-27101 shared memory realm does not exist...... what is the root cause of this issue and how is it fixed?
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Jun 17, 2011
If I am log in through crystal reports , I am getting the following error.
ORA-04031 unable to allocate bytes of shared memory("","","","").
If I log in through TOAD from back end I am not getting any error.
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Aug 30, 2012
Let me put my current Environment Info.
Single Laptop Machine of 16GB RAM.
Assigned 13GB to VM.
I have installed Oracle Database 11g. 11.2.00. When I try to access my application many times I received below error
• Error:
“”Caused by: java.sql.SQLException: Could not retrieve datasource via JNDI url 'jdbc/oimJMSStoreDS' weblogic.jdbc.extensions.ConnectionDeadSQLExceptio n: weblogic.common.resourcepool.ResourceDeadException : Could not create pool connection. The DBMS driver exception was: ORA-00604: error occurred at recursive SQL level 3
ORA-04031: unable to allocate 352 bytes of shared memory ("shared pool","select /*+ rule */ bucket_cn...","SQLA^337fc737","qertbs:qertbIAlloca te")
[code]......
Even when above error occur I have 7GB free JVM so JVM is not an Issue.
•I have updated Max Capacity of oimOperationsDB =100,oimOperdationDB, oimJMSStoreDS=80,SOADATAStore =80. But still I have error
• ERROR::
• ““Aug 30, 2012 3:24:10 PM EST> <Warning> <oracle.integration.platform.blocks.event.saq> <SOA-31013> <Error handling message (rolling back).
java.sql.SQLException: ORA-04031: unable to allocate 352 bytes of shared memory ("shared pool","select /*+ rule */ bucket_cn...","SQLA^337fc737","qertbs:qertbIAlloca te")
ORA-06512: at "SYS.DBMS_AQ", line 335
ORA-06512: at "DEV_SOAINFRA.EDN_DEQUEUE_OAOO_DELIVERY", line 14”
[code]......
I have modified Shared_pool_size,large_pool_size. Content of my modified Pfile is as below.
o orcl.__db_cache_size=822083584
o orcl.__java_pool_size=2777216
o orcl.__large_pool_size=56777216
o orcl.__oracle_base='/home/oracle/app/oracle'#ORACLE_BASE set from environment
o orcl.__pga_aggregate_target=805306368
o orcl.__sga_target=1174405120
o orcl.__shared_io_pool_size=0
o orcl.__shared_pool_size=601989888
o orcl.__streams_pool_size=0
What’s value of parameter I need to set for datastore, pfile ? (I have 13GB of memory).
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Jan 15, 2013
I have 2-node rac database, I lost the disks(+data) which belongs to the rac database.I want to restore the spfile, its giving below error.
RMAN> restore spfile from autobackup;
Starting restore at 15-JAN-13
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 01/15/2013 12:20:52
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
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May 17, 2013
Windows 2003 Server Enterprise Edition, Service Pack 2. 3.5GB RAM.Two Oracle Databases running on this server, one not heavily used. On the database i am concerned with it is 10.2.0.3.0.
I have just started to look at this database and am seeing various things in the alert log and have had user error messages as well.Initially when i started looking at this server it was running with quite a small SGA (600MB) and the memory_target_advice was saying to take it to 1000MB.(PGA is around 200MB)
In January, before i looked at it, it started to throw:
ORA-04031 unable to allocate 16 bytes of shared memory ("shared pool","........", "sql area", "tmp") These would occur regularly and mostly during nightly processes, it seems, and thus not bubbling up to users.Having switched the SGA_MAX_SIZE to 1GB a new set of errors starts to appear in the alert log:
ORA-27301: ..... Not enough storage is available to process this command
ORA-27302: ..... ssthrddcr
At the same time the ORA-04031 errors start to bubble through to the users. Before i could return to the scene of the crime someone else set the SGA back to 600MB and the error messages stopped. However the ORA-04031 message start to reappear in the alert log. My questions are many and, mostly, from a lack of knowledge ;) In particular:
1. Why would increasing the SGA lead to a different memory error? I would assume this would have something to do with the amount of memory a 32bit OS will allow a single process to address but the PGA+SGA is only 1200MB.
2. How does a ORA-273xx error end up with a ORA-04031 being shown to the users? I would look at the listener log but its over 2GB!!!
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Oct 11, 2012
we are having a test server in bank environment.
Details:
IBM p series servers
AIX 5.3
Server memory : 16G
there are 2 instances on this server.
1. Near DR - 9840M
2. Test server - 1344M
Rest is for server.
Oracle 10.2.0.3.0 - Production
2 days ago we are running a stored procedure on this test server. After some time DB gave this error and stored procedure stopped.After that we were unable to login through Oracle Client Software. Whenever we try to login to this DB through client software, it gives following errors.
ERROR:
ORA-01034: ORACLE not available
ORA-27123: unable to attach to shared memory segment
IBM AIX RISC System /6000 Error: 13: Permission denied
We tried to shut the DR database and then login but still gives error..
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Jun 8, 2012
on 11G R2 on Win 2008,
We had the following error in alertlog repeatedly from 5 PM to 10 PM :
ORA-04031: unable to allocate 32 bytes of shared memory ("shared pool","SELECT VERSION FROM PSVERSIO .....Since MEMORY_TARGET is defined in spfile then shared pool is managed automatically.
Then what to do to avoid this error in future ?
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Apr 7, 2012
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
connected as- / as sysdba
Connected to an idle instance.
SQL> startup
ORA-01261: Parameter db_recovery_file_dest destination string cannot be translated
ORA-01263: Name given for file destination directory is invalid
OSD-04018: Unable to access the specified directory or device.
O/S-Error: (OS 2) The system cannot find the file specified.
SQL>
ORACLE_HOME is - E:\oracle\product\10.2.0\db_2
ORACLE_SID is - orcl11
I'm using Oracle 10.2.0 in windows 7.When i installed oralce it worked properly for 1 week, now throwing an error ora-01034 and ora-27101.
I just perform CRUD Operations with database as a java dev by connecting via MYEclipse, but it is not at all allowing me to connect.
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Jan 17, 2013
i did this step
C:UsersAdministrator>sqlplus
SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jan 17 15:59:33 2013
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Enter user-name: sys@orcl as sysdba
Enter password:
Connected to an idle instance.
SQL> create pfile from spfile;
[code].....
here its my init.ora file
##############################################################################
# Copyright (c) 1991, 2001, 2002 by Oracle Corporation
##############################################################################
###########################################
# Cache and I/O
###########################################
[code].....
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Sep 16, 2003
All of a sudden my oracle application has stopped functioning.When I try to log in I get the following messages:
ORA-27101 SHARED MEMORY REALM DOES NOT EXIST
ORA-01034 ORACLE NOT AVAILABLE
From the command line when I try to connect as sysdba and startup the following message appears: "oracle instance terminated.Disconnection forced"
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Jun 12, 2010
ORACLE was working perfectly on Windows 7 since Jan 2010. A couple of days ago I ran a procedure which was to update a table with 1000 columns. The procedure worked fine till it created a few thousand records and then it slowed down terribly. I closed the SQL Plus command line tool (CTRL C) and tried to restart and then tried to logon to get the following errors-
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Then I used the Start Database tool (net start OracleTNSListener), but it showed "System 5 error". So after researching online I created Admin profile for WINDOWS 7 and logged in as an administrator. In the INIT.ORA file I increasd the SGA_TARGET to 5G and PGA to 3G. After doing that the above service is running but I'm still getting the ORA-01034 and ORA-27101.
Using cmd prompt in Windows and entering commands sqlplus -> Username: " / as sysdba" gives an insufficient privileges error.
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May 20, 2013
i am facing this problem from yesterday i cant able to do any DML operations on my Database i am getting this error every time
ORA-00604: error occurred at recursive SQL level 2
ORA-04031: unable to allocate 3896 bytes of shared memory ("shared pool","select x.inst_id,x.indx+1,ks...","sga heap(1,0)","kglsim
i am giving SHOW parameter SGA or even select statement i am getting the same error message
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Sep 7, 2010
When user insert rows in table oracle interrupts and raise error- ORA-04031: unable to allocate 256 bytes of shared memory? how to do?
I tried to increase the size of shared_pool also but cant.
large_pool_size = 0
shared_pool_size=134217728(128M)
sga_max_size=218103808(208M)
And when I fire 'select* from v$sga;'
Fixed Size 2142976
Variable Size 159386880
Database Buffers 50331648
Redo Buffers 5296128
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Jan 1, 2013
I have a package when it runs, it terminates with "unable to allocate 4120 bytes of shared memory"error at a particular INSERT statement. So everytime we had this error, we had to flush the shared pool area, after which it would run without issues(for 3-4 weeks).
It had a dynamic subpartition clause framed, which made it to repharse the query every time.So to reduce this, we removed the subpartition clause(made it to static query), which did benefit of not getting shared pool error.
I would like to find the current shared pool memory usage of my program.Is there a way I could find the live consumption of shared pool area of my program(pkg).
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Sep 24, 2013
i am continuously inserting data to oracle database after some time like 2 hours oracle disconnects,it creates erros like
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Process ID: 0
Session ID: 0 Serial number: 0
after restarting the database with shutdown immediate ans startup if i start inserting records it will show erros like
ORA-01653: unable to extend table SYSTEM.GLT_PROT_TRAFFIC_SUM_VOIP by 8192 in tablespace GLCOMM
but i have created the Tablespace with BigFile Auto Extend and max size unlimited, i am having 400GB disk space created Redo logs with 15gb,i have tried serveral times reinstalling the oracle but problem is not solved.
same problem is happenging with small datafiles also,
operating system: windows server 2008 R2 standard
oracle server : 11g
oracle client : 64 bit
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Feb 21, 2012
[oracle@localhost ~]$ sqlplus system/password
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Feb 21 20:20:09 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory
But when i am using SID name while connecting to database i am able to connect...
[oracle@localhost ~]$ sqlplus system/password@apple
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Feb 21 20:21:42 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL>
I have only one database...
TNS.......
# tnsnames.ora Network Configuration File: /u01/app/oracle/product/10.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
APPLE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 72.0.0.11)(PORT = 1521))
[code]...
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Feb 7, 2013
according to article "Installing Netbackup for Oracle agent on Unix". URL.... Shut Down all oracle instances on this client. The reason: sometimes Oracle will take a shared library (such as ours) and place it into its shared memory spaceMy question is how I can control existence shared library in memory space to define the real need of Shuting down of all oracle instances ? I'm usung 11.2.0.3
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Dec 11, 2012
we are trying ti implement BMC monitoring tool for our oracle 11g2 RAC/solaris10 environment. for the purpose we create a user called bmcuser in OS level, this user connecting database to monitor, this user occupy shared memory as oracle. Explain why this user taking that much shared memory just to connect database using sqlplus.
oracle taking 55% bmcuser taking 44%,
SQL> show parameters memory
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
hi_shared_memory_address integer 0
memory_max_target big integer 3232M
memory_target big integer 3232M
shared_memory_address integer 0
SQL> show parameters sga
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 3232M
sga_target big integer 0
PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP
6449 bmcuser 47M 44M sleep 23 10 0:57:31 0.2% PatrolAgent/1
[code]........
pga & uga usage sessionwise
SID ORA_USR OS_USR S_PROG S.MACHINE S.PGA_MEM S.PGA_MEM_MAX S.UGA_M S.UGA_M_MAX
252 (null) oracle oracle@racdev1.zakathouse.org (ARC3) racdev1. 31054584 32168696 181056 181056
227 (null) oracle oracle@racdev1.zakathouse.org (ARC2) racdev1. 31054584 32168696 181056 181056
177 (null) oracle oracle@racdev1.zakathouse.org (ARC0) racdev1. 31054584 32168696 181056 181056
576 (null) oracle oracle@racdev1.zakathouse.org (LGWR) racdev1. 16693544 21281064 181056 181056
326 (null) oracle oracle@racdev1.zakathouse.org (LMS0) racdev1. 13753080 13753080 181056 181056
376 (null) oracle oracle@racdev1.zakathouse.org (LMS2) racdev1. 13556472 13556472 181056 181056
[code]........
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Jul 25, 2012
I have the following setup
SQL> show parameter sga;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 3G
sga_target big integer 2G
from what I read I beleive this will initially grab 2GB of memory on startup and will grab up to to 3GB of memory total for the SGA. The "total" memory can be allocated to different peices of the SGA when needed but will never exceed 3GB. Is this correct or would these settings infringe on any available memory on a system that is already tight on memory?
Secondly, what happens if both these values are set to the same value?
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May 23, 2013
Can i know the internal process of initialization of DB into memory in timesten , when a new connection is establishing? Will timesten create tables and indexes in RAM when first connection is established if the RAM policy is default?
want to know the internal functional flow of timesten when any command is fired against it.
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Jan 15, 2011
I have a confusion with MEMORY_TARGET and MEMORY_MAX_TARGET parameter. if i set SGA_TARGET, SGA_MAX_SIZE along with MEMORY_TARGET and MEMORY_MAX_TARGET then how oracle will manage the memory? Because as per my understanding if we set MEM
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