Allocator race detected ...

Hi,
A user hit the following error yesterday and I am trying to work out what is wrong.
Jul 1 17:45:49 mac-01 com.apple.launchd[132] (0x10fed0.Locum[5687]): Exited: Terminated
Jul 1 17:48:04 mac-01 /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder[153]: Allocator race detected: transaction is not verified for -102/2 - Compressed/k0025337-h.264.mov
The user was trying to copy a number of files from her Desktop to a remote server. All the files made it but 2 files would not copy correctly. The files made it to the remote server but instead of being 1.7MB they were 1.8MB (ok they are different files systems so the size may be reported differently) and when you attempted to play the files - the files were h264 movies - they were reported as corrupted.
The only other odd think about the files is that when these particular files arrive on the remote server their permissions are different from all the files that made it to their destination ok.
EG:
-rw-rw-r-- 1 asomerve samba 1354503 2010-07-01 16:56 k0025343-H.264 watermark.mov
-rw-rw-r-- 1 asomerve samba 2984461 2010-07-01 17:01 k0025333-H.264.mov
-rw-rw-r-- 1 asomerve samba 3044265 2010-07-01 17:06 k0025333-H.264 watermark.mov
-rwx---rw- 1 asomerve samba 2680045 2010-07-01 17:30 k0025335-h.264.mov
-rw-rw-rw- 1 asomerve samba 2797236 2010-07-01 17:31 k0025335-h.264watermarked.mov
-rwx---rw- 1 asomerve samba 1721173 2010-07-01 17:31 k0025337-h.264.mov
-rw-rw-rw- 1 asomerve samba 1651866 2010-07-01 17:31 k0025337-h.264watermarked.mov
The files k0025337-h.264.mov and k0025335-h.264.mov are the culprits. The other files all made it over without any problems.
Does anyone have any ideas on what the problem might be?
Thanx in advance.
Dp.

Hiya mm...
No-one's followed up on this, and you haven't reposted,.. did your problem get resolved or just go away?
I'm asking, because we had an AFP hicup this morning (that went away all by his lonesome) but digging, reveals the same "Allocator race detected" messages you mention. So,.. any news?
shawn

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rc=$(echo races | er_print $1 2> /dev/null | grep 'Total Races: 0' > /dev/null 2>&1 )
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Data Race

Hi,
I am having data race (race condition) issue in the following code (pseudo code):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public class MainClass implements Runnable{
Vector queue = new Vector();
public MainClass{
createInnerClass();
private void createInnerClass{
Thread th = new Thread(new InnerClass());
th.start();
public void stop(){
Loop(queue){ <<< DATA RACE DETECTED
queue.remove();
public InnerClass implements{
public void run(){
queue = new Vector(); <<<< DATA RACE DETECTED
Loop(queue){
queue.add(Object);
So I have changed the code as follows:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
public class MainClass implements {
Vector queue = new Vector();
public MainClass{
createInnerClass();
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Thread th = new Thread(new InnerClass());
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Loop(queue){ <<< DATA RACE IS STILL OCCURING
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Thank you so much for you reply.
I am little bit confused when you mentioned that I
have put sync on object not on variable
instance. I don't want to goto Java basic, but my
understanding of object and variable is
very much same. No. The object is a chunk of memory, and the variable is your "handle" to it.
Object o1 = new Object();
Object o2 = new Object();
Object o3 = o2;
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+----+      +----------+
| o1 | ---> |          |
+----+      +----------+
              Object #2
+----+      +----------+
| o2 | ---> |          |
+----+      +----------+
             ^
+----+       |
| o3 | ------+
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+----+      +----------+
| o1 | ---> |          |
+----+      +----------+
              Object #2
+----+      +----------+
| o2 | ---> |          |
+----+      +----------+
              Object #3
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| o3 | ---> |          |
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public class MainClass implements Runnable{
Vector queue = new Vector();
public InnerClass implements Runnable{
public void run(){
synchronized(queue){ >>>> SET A MONITOR2
queue = new Vector(); >>>> DATA RACE IS
DATA RACE IS STILL OCCURING
Loop{
queue.add(c);
}          You'd have to switch the order of assigning to queue and syncing on it: queue = new Vector();
synchronized(queue) {
   ... However that code looks weird anyway. You intialize the queue member variable in the constructor, and then you assign a new Vector to it in the run method. I don't think you want to do that.
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RAC basic

hi,
I am newbie to oracle RAC.i would like to test RAC ENVIRONMENT.I read the documents.please clarify basic things to me
Each Instance related to
Own SGA
Background processes
Data and control files are shared
Own redo logs
Own set of rollback/undo tablespaces
what about TEMP tablespace whether each instance has OWN or NOT.And any other files like password file,init file,oracle_home ,log file etc
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Cache fusion
Guarantees cache coherency
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Edited by: user3266490 on Jun 3, 2009 12:29 PM
Edited by: user3266490 on Jun 3, 2009 12:29 PM

Hi
Just my opinion....
Own SGA: Each instance has it owns SGA (shared pool, buffer cache, log buffer, large pool, etc)
Background processes: each instance has it owns main background process (dbwr, lgwr, ckpt, smon, etc). RAC has additional BG process like lms, lmon, diag, etc.
Data and control files are shared: Control files are shared between all instances of the same database. Datafiles the same, with the exception of UNDO and TEMP datafiles.
Own redo logs: each instance has it owns online redo logs to save it owns changes, but they are shared for all instances.
Own set of rollback/undo tablespaces: each instance has it owns UNDO tablespace, but they are shared for all instances.
what about TEMP tablespace whether each instance has OWN or NOT.And any other files like password file,init file,oracle_home ,log file etc
- TEMP tablespace is shared for all instance, i would recommend to use tablespace TEMP groups.
- Each instance has it owns Password file
- I would recommend that each RAC node has it owns ORACLE_HOME for Clusterware and Oracle Database (including ASM)
- Parameter file could be shared and stored in ASM
what is the meaning of follwings
- Cache fusion: RAC needs to be aware of the oracle blocks used by each instance
Guarantees cache coherency: RAC needs to guarantee cache coherency between instances, if not we can have data loss or corruption because of having multiple instances accessing same database.
No disk I/O costs: RAC will try to access all oracle blocks from memory. For example if Instance 2 wants to read some Oracle blocks and RAC detects that they are on instance 1...Instance 2 will ask for that blocks to instance 1 (memory and interconnec I/O, instead of disk I/O)
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18 if (!pflag)
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Also, Section 6.2.2 says:
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106 int i;
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109 return;
110 else {
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113 return;
114 }
115 }
116 }
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Herteg,
Thank you very much for your detail review and good suggestions.
The upper bound of the loop in section 6.2.2 should be my_end(thread_id).
We will update the document.
Thanks!
-- Yuan

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JDK 1.5.0_16 should work just fine for Thread Analyzer.
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the results of your experiment in "analyzer", but it will not
show data race problems, because they are not collected.
Thanks.
Nik

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Hello all,
I have a 2 node rac on 10.2.0.2 on Solaris 10.
The other day when i tried to upgrade them to 10.2.0.3, the installer was not detecting
installation as a RAC(the cluster nodes were not shown), but as single installation. Even 'opatch lsinventory' didnt show the rac details which it was supposed to show in a RAC. So i have left my CRS with 10.2.0.3 and RDBMS as 10.2.0.2.. Seems like inventory got screwed, but not sure.
I am not sure how this installation was done.
A friend of mine said that there could be another means of installing RAC other than letting the OUI itself to copy the files to the node2 while installation and that is why it doesn't show the RAC details.
Is it possible to have Oracle Single instances on 2 machines to act as a rac by doing some changes?
Could someone let me know the different methods of setting up RAC (other than the default method of letting the OUI to do the part.) ?
Will there be some problem if i proceed installing 10.2.0.3 even if the OUI does not identify it as a rac installation?
TIA,
JJ

Hi,
myuolicdbd01 [SHCL1N01]$ ./opatch lsinventory -oh $ORA_CRS_HOME
Invoking OPatch 10.2.0.2.0
Oracle interim Patch Installer version 10.2.0.2.0
Copyright (c) 2005, Oracle Corporation. All rights reserved..
Oracle Home       : /u01/app/oracle/product/crs
Central Inventory : /u01/app/oracle/oraInventory
   from           : /u01/app/oracle/product/crs/oraInst.loc
OPatch version    : 10.2.0.2.0
OUI version       : 10.2.0.3.0
OUI location      : /u01/app/oracle/product/crs/oui
Log file location : /u01/app/oracle/product/crs/cfgtoollogs/opatch/opatch-2007_Dec_04_15-33-47-JST_Tue.log
Lsinventory Output file location : /u01/app/oracle/product/crs/cfgtoollogs/opatch/lsinv/lsinventory-2007_Dec_04_15-33-47-JST_Tue.txt
Installed Top-level Products (2):
Oracle Clusterware                                                   10.2.0.1.0
Oracle Database 10g Release 2 Patch Set 2                            10.2.0.3.0
There are 2 products installed in this Oracle Home.
There are no Interim patches installed in this Oracle Home.
Rac system comprising of multiple nodes
Local node = myuolicdbd01
Remote node = myuolicdbd02
OPatch succeeded.
myuolicdbd01 [SHCL1N01]$The below is for the RDBMS home and it does not show the node list.
myuolicdbd01 [SHCL1N01]$ ./opatch lsinventory -oh $ORACLE_HOME
Invoking OPatch 10.2.0.2.0
Oracle interim Patch Installer version 10.2.0.2.0
Copyright (c) 2005, Oracle Corporation. All rights reserved..
Oracle Home       : /u01/app/oracle/product/10.2.0/db_1
Central Inventory : /u01/app/oracle/oraInventory
   from           : /u01/app/oracle/product/10.2.0/db_1/oraInst.loc
OPatch version    : 10.2.0.2.0
OUI version       : 10.2.0.2.0
OUI location      : /u01/app/oracle/product/10.2.0/db_1/oui
Log file location : /u01/app/oracle/product/10.2.0/db_1/cfgtoollogs/opatch/opatch-2007_Dec_04_15-34-22-JST_Tue.log
Lsinventory Output file location : /u01/app/oracle/product/10.2.0/db_1/cfgtoollogs/opatch/lsinv/lsinventory-2007_Dec_04_15-34-22-JST_Tue.txt
Installed Top-level Products (2):
Oracle Database 10g                                                  10.2.0.1.0
Oracle Database 10g Release 2 Patch Set 1                            10.2.0.2.0
There are 2 products installed in this Oracle Home.
Interim patches (2) :
Patch 5490848      : applied on Thu Nov 16 01:26:37 JST 2006
   Created on 5 Oct 2006, 10:16:33 hrs US/Eastern
   Bugs fixed:
     5407466, 5092134, 4925103, 5099995, 5079037, 5242650, 5079038, 4604970
     4763768, 4523125, 5225799, 5490937, 5490848, 4669305
Patch 5117016      : applied on Wed Jul 19 19:48:22 JST 2006
   Created on 30 Mar 2006, 12:52:17 hrs US/Pacific
   Bugs fixed:
     5117016
OPatch succeeded.
myuolicdbd01 [SHCL1N01]$Details of the Cluster Verification Utility
==============================
myjpsuolicdbd01 [SHCL1N01]$ cluvfy stage -post crsinst -n myuolicdbd01,myuolicdbd02
Performing post-checks for cluster services setup
Checking node reachability...
Node reachability check passed from node "myuolicdbd01".
Checking user equivalence...
User equivalence check passed for user "oraprd".
Checking Cluster manager integrity...
Checking CSS daemon...
Daemon status check passed for "CSS daemon".
Cluster manager integrity check passed.
Checking cluster integrity...
Cluster integrity check passed
Checking OCR integrity...
Checking the absence of a non-clustered configuration...
All nodes free of non-clustered, local-only configurations.
Uniqueness check for OCR device passed.
Checking the version of OCR...
OCR of correct Version "2" exists.
Checking data integrity of OCR...
Data integrity check for OCR passed.
OCR integrity check passed.
Checking CRS integrity...
Checking daemon liveness...
Liveness check passed for "CRS daemon".
Checking daemon liveness...
Liveness check passed for "CSS daemon".
Checking daemon liveness...
Liveness check passed for "EVM daemon".
Checking CRS health...
CRS health check passed.
CRS integrity check passed.
Checking node application existence...
Checking existence of VIP node application (required)
Check passed.
Checking existence of ONS node application (optional)
Check passed.
Checking existence of GSD node application (optional)
Check passed.
Post-check for cluster services setup was successful.TIA,
J J

Allocator race detected ...

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