Update deactivated when DB2 transaction logs fill.
Hi All,
We are running SAP on DB2 Version9 on AIX platform.
We notirced that when transaction logs get full, the Update workprocess gets deactivated. This happens in any usage type that we have.. SRM, ECC , BI.
In the workprocess log we find this
C &+ ABAP location info 'SAPLSNR3', 2480
C &+ SAP user 'P1245690', transaction code 'WRF_WSOA2'
C &+
C *** ERROR in DB6Execute[dbdb6.c, 4556] (END)
B ***LOG BYL=> DBQ action required because of database error [dbsh#2 @ 1100] [dbsh 1100 ]
B SQL code: -964, SQL text: SQL0964C The transaction log for the database is full. SQLSTATE=57011 row=1
M ThIVBChangeState: update deactivated
M ***LOG R0R=> ThIVBChangeState, update deactivated () [thxxvb.c 11442]
M
M Sun Aug 8 08:30:44 2010
M *** ERROR => ThVBCheckCommit: reject bad ROLLBACK [thxxvb.c 13471]
A
A Sun Aug 8 08:57:56 2010
A TH VERBOSE LEVEL FULL
A ** RABAX: level LEV_RX_PXA_RELEASE_MTX entered.
A ** RABAX: level LEV_RX_PXA_RELEASE_MTX completed.
A ** RABAX: level LEV_RX_COVERAGE_ANALYSER entered.
A ** RABAX: level LEV_RX_COVERAGE_ANALYSER completed.
I have never heard of Update being deactivated for transaction log full at DB level. Update can be held up butwill it get deactivated.
Is it possible that update gets deactivated if it not able to post the tranaction data in DB?
Please let me know your ideas on this and how we can prevent this update from deactivating.
Thanks and REgards,
Raghavan
Hi,
If you search for "SQL0964C The transaction log for the database is full" then some of solutions ask for to execute the below mentioned steps :-
Use the following procedure to increase the size of the DB2 transaction log (logfilsiz):
1. Determine the current log file size setting by issuing the command:
su - <db2instance>
db2 list db directory # to list the database name
db2 connect to <databaseName>
db2 get db config for <databaseName> and check LOGFILSIZ parameter.
A sample output given from my test system :-
Log file size (4KB) (LOGFILSIZ) = 16380
Number of primary log files (LOGPRIMARY) = 20
Number of secondary log files (LOGSECOND) = 40
Changed path to log files (NEWLOGPATH) =
Path to log files = /db2/<dataname>/log_dir/NODE0000/
Overflow log path (OVERFLOWLOGPATH) =
Mirror log path (MIRRORLOGPATH) =
First active log file =
Block log on disk full (BLK_LOG_DSK_FUL) = YES
Percent max primary log space by transaction (MAX_LOG) = 0
Num. of active log files for 1 active UOW(NUM_LOG_SPAN) = 0
2. Increase the size of the log file size setting by issuing the command:
db2 UPDATE db cfg for <databaseName> using LOGFILSIZ <new_value>
Example:
db2 UPDATE db cfg for <databaseName> using LOGFILSIZ 5000
3. Stop the ibmslapd process.
4. Issue the commands:
db2 force applications all
db2stop force
5. Restart ibmslapd process.
Once the db issue is resolved then your update work process must be running fine.
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Dear gurus,
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00:0008:00000:00009:2014/06/26 15:49:37.09 server Checkpoint process detected hardware error writing logical page '2854988', device 5, virtual page 6586976 for dbid 4, cache 'log cache'. It will sleep until write completes successfully.
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=======================
1 - check to make sure the filesystem that device #5 (vdevno=5) sits on is not full; make sure filesystem is large enough to hold the entire defined size of device #5; make sure no other processes are writing to said filesystem
2 - have your OS/disk admin(s) make sure the disk fragment(s) underlying device #5's filesystem isn't referenced by other filesystems and/or raw device definitions -
Hi,
Our transaction logs are getting filled up very rapidly. Within two hours of time about 60 GB of transactions logs
are getting filled. But the users activity is not that high and very normal.
As I am new to MSSQL, kindly guide us in this regard.
Best Regards,
DVRKHi Rama,
Are you doing any client import process or any other process that cause filling the Transaction logs .
Go to SM37 and see the Acive jobs and check out any backgroung jobs running continuous causing this issue .
Also go to SM50 and see any long runnning activities going on .
To Free up Transaction logs space you can follow any of the below options :
1) Take Backup of Tlogs , it will work out and some free space will be generated.
2) You can shrink Transaction log . Refer note : 625546
regards,
Nibu -
DB2 Transaction log Problem after set db manuell to Rollforward
Hello,
I have a problem when set the db2 manuell in rollforward mode. After I set the command db2rfpen ON E35 my database (E35) is in rollforward mode.
Now I can see with command "db2 rollforward db E35 query status" the Last committed transaction
but the timestamp of the Last committed transaction is 2106-02-07-06.28.15.000000 UTC
but we do not have year 2106!!
did someone have similar issue or a solution for my problem??
Is it possible to manuell update the table via SQL? But I dont know which table i should update..
Thanks in advanced.
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following output of db2 get snapshot for all databases because db2 get snapshot for database E35 does not work..
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regards
Robin
Database Snapshot
Database name = E35
Database path = /db2/E35/db2e35/NODE0000/SQL00001/MEMBER0000/
Input database alias =
Database status = Active
Catalog database partition number = 0
Catalog network node name = srvnetapp07
Operating system running at database server= LINUXAMD64
Location of the database = Local
First database connect timestamp = 08/11/2014 12:16:58.594371
Last reset timestamp =
Last backup timestamp = 08/08/2014 09:57:42.000000
Snapshot timestamp = 08/11/2014 12:17:46.494342
Number of automatic storage paths = 4
Automatic storage path = /db2/E35/sapdata1
Node number = 0
State = In Use
File system ID = 64782
Storage path free space (bytes) = 23376351232
File system used space (bytes) = 3045990400
File system total space (bytes) = 26422341632
Automatic storage path = /db2/E35/sapdata2
Node number = 0
State = In Use
File system ID = 64783
Storage path free space (bytes) = 23376351232
File system used space (bytes) = 3045990400
File system total space (bytes) = 26422341632
Automatic storage path = /db2/E35/sapdata3
Node number = 0
State = In Use
File system ID = 64784
Storage path free space (bytes) = 23376351232
File system used space (bytes) = 3045990400
File system total space (bytes) = 26422341632
Automatic storage path = /db2/E35/sapdata4
Node number = 0
State = In Use
File system ID = 64785
Storage path free space (bytes) = 23376351232
File system used space (bytes) = 3045990400
File system total space (bytes) = 26422341632
High water mark for connections = 13
Application connects = 9
Secondary connects total = 11
Applications connected currently = 1
Appls. executing in db manager currently = 0
Agents associated with applications = 11
Maximum agents associated with applications= 13
Maximum coordinating agents = 13
Number of Threshold Violations = 0
Locks held currently = 29
Lock waits = 2
Time database waited on locks (ms) = 56
Lock list memory in use (Bytes) = 77568
Deadlocks detected = 0
Lock escalations = 0
Exclusive lock escalations = 0
Agents currently waiting on locks = 0
Lock Timeouts = 0
Number of indoubt transactions = 0
Total Private Sort heap allocated = 0
Total Shared Sort heap allocated = 6
Shared Sort heap high water mark = 245
Post threshold sorts (shared memory) = 0
Total sorts = 2
Total sort time (ms) = 2
Sort overflows = 0
Active sorts = 0
Buffer pool data logical reads = 68507
Buffer pool data physical reads = 1312
Buffer pool temporary data logical reads = 0
Buffer pool temporary data physical reads = 0
Asynchronous pool data page reads = 899
Buffer pool data writes = 0
Asynchronous pool data page writes = 0
Buffer pool index logical reads = 52871
Buffer pool index physical reads = 449
Buffer pool temporary index logical reads = 0
Buffer pool temporary index physical reads = 0
Asynchronous pool index page reads = 0
Buffer pool index writes = 0
Asynchronous pool index page writes = 0
Buffer pool xda logical reads = 0
Buffer pool xda physical reads = 0
Buffer pool temporary xda logical reads = 0
Buffer pool temporary xda physical reads = 0
Buffer pool xda writes = 0
Asynchronous pool xda page reads = 0
Asynchronous pool xda page writes = 0
Total buffer pool read time (milliseconds) = 4912
Total buffer pool write time (milliseconds)= 0
Total elapsed asynchronous read time = 3219
Total elapsed asynchronous write time = 0
Asynchronous data read requests = 454
Asynchronous index read requests = 0
Asynchronous xda read requests = 0
No victim buffers available = 0
LSN Gap cleaner triggers = 0
Dirty page steal cleaner triggers = 0
Dirty page threshold cleaner triggers = 0
Time waited for prefetch (ms) = 982
Unread prefetch pages = 0
Direct reads = 986
Direct writes = 2
Direct read requests = 77
Direct write requests = 1
Direct reads elapsed time (ms) = 243
Direct write elapsed time (ms) = 0
Database files closed = 0
Host execution elapsed time = 5.785568
Commit statements attempted = 16
Rollback statements attempted = 2
Dynamic statements attempted = 6950
Static statements attempted = 23
Failed statement operations = 0
Select SQL statements executed = 6936
Xquery statements executed = 0
Update/Insert/Delete statements executed = 6
DDL statements executed = 0
Inactive stmt history memory usage (bytes) = 0
Internal automatic rebinds = 0
Internal rows deleted = 0
Internal rows inserted = 0
Internal rows updated = 0
Internal commits = 21
Internal rollbacks = 0
Internal rollbacks due to deadlock = 0
Number of MDC table blocks pending cleanup = 0
Rows deleted = 0
Rows inserted = 0
Rows updated = 13838
Rows selected = 13897
Rows read = 141752
Binds/precompiles attempted = 0
Log space available to the database (Bytes)= 333797877
Log space used by the database (Bytes) = 26523
Maximum secondary log space used (Bytes) = 0
Maximum total log space used (Bytes) = 37070
Secondary logs allocated currently = 0
Log pages read = 0
Log read time (sec.ns) = 0.000000000
Log pages written = 13
Log write time (sec.ns) = 0.006250000
Number write log IOs = 9
Number read log IOs = 0
Number partial page log IOs = 7
Number log buffer full = 0
Log data found in buffer = 0
Log to be redone for recovery (Bytes) = 26523
Log accounted for by dirty pages (Bytes) = 26523
Node number = 0
File number of first active log = 90
File number of last active log = 94
File number of current active log = 90
File number of log being archived = Not applicable
Package cache lookups = 6955
Package cache inserts = 20
Package cache overflows = 0
Package cache high water mark (Bytes) = 1026593
Application section lookups = 20824
Application section inserts = 29
Catalog cache lookups = 740
Catalog cache inserts = 55
Catalog cache overflows = 0
Catalog cache high water mark = 429098
Catalog cache statistics size = 0
Workspace Information
Number of hash joins = 4
Number of hash loops = 0
Number of hash join overflows = 0
Number of small hash join overflows = 0
Post threshold hash joins (shared memory) = 0
Active hash joins = 0
Number of OLAP functions = 0
Number of OLAP function overflows = 0
Active OLAP functions = 0
Statistic fabrications = 0
Synchronous runstats = 0
Asynchronous runstats = 0
Total statistic fabrication time (milliseconds) = 0
Total synchronous runstats time (milliseconds) = 0
Memory usage for database:
Node number = 0
Memory Pool Type = Backup/Restore/Util Heap
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 204800000
Node number = 0
Memory Pool Type = Package Cache Heap
Current size (bytes) = 1179648
High water mark (bytes) = 1179648
Configured size (bytes) = 472317952
Node number = 0
Memory Pool Type = Other Memory
Current size (bytes) = 196608
High water mark (bytes) = 196608
Configured size (bytes) = 20971520
Node number = 0
Memory Pool Type = Catalog Cache Heap
Current size (bytes) = 524288
High water mark (bytes) = 524288
Configured size (bytes) = 10485760
Node number = 0
Memory Pool Type = Buffer Pool Heap
Secondary ID = 1
Current size (bytes) = 494010368
High water mark (bytes) = 494010368
Configured size (bytes) = 494010368
Node number = 0
Memory Pool Type = Buffer Pool Heap
Secondary ID = System 32k buffer pool
Current size (bytes) = 1835008
High water mark (bytes) = 1835008
Configured size (bytes) = 1835008
Node number = 0
Memory Pool Type = Buffer Pool Heap
Secondary ID = System 16k buffer pool
Current size (bytes) = 1572864
High water mark (bytes) = 1572864
Configured size (bytes) = 1572864
Node number = 0
Memory Pool Type = Buffer Pool Heap
Secondary ID = System 8k buffer pool
Current size (bytes) = 1441792
High water mark (bytes) = 1441792
Configured size (bytes) = 1441792
Node number = 0
Memory Pool Type = Buffer Pool Heap
Secondary ID = System 4k buffer pool
Current size (bytes) = 1376256
High water mark (bytes) = 1376256
Configured size (bytes) = 1376256
Node number = 0
Memory Pool Type = Shared Sort Heap
Current size (bytes) = 2359296
High water mark (bytes) = 3932160
Configured size (bytes) = 40435712
Node number = 0
Memory Pool Type = Lock Manager Heap
Current size (bytes) = 159645696
High water mark (bytes) = 159645696
Configured size (bytes) = 159711232
Node number = 0
Memory Pool Type = Database Heap
Current size (bytes) = 87687168
High water mark (bytes) = 87687168
Configured size (bytes) = 119472128
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 107
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 106
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 105
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 104
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 103
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 102
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 101
Current size (bytes) = 196608
High water mark (bytes) = 196608
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 100
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 99
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 98
Current size (bytes) = 65536
High water mark (bytes) = 65536
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Application Heap
Secondary ID = 97
Current size (bytes) = 131072
High water mark (bytes) = 131072
Configured size (bytes) = 1048576
Node number = 0
Memory Pool Type = Applications Shared Heap
Current size (bytes) = 458752
High water mark (bytes) = 458752
Configured size (bytes) = 81920000 -
Performance problem with transaction log
We are having some performance problem in SAP BW 3.5 system running on MS SQL server 2000.The box is sized 63,574 MB. The transaction logs gets filled up after loading data in to a transactional cube or after doing selective deletion. The size of the transaction log is 7,587MB currently.
Basis team feels that when performing either loading or selective deletion, SQL server views it as a single transaction and doesn't commit until every record is written. And so as a result, transaction logs fills up ultimately bringing the system down.
The system log shows a DBIF error during the transaction log fill up as follows:
Database error 9002 at COM
> [9002] the log file for database 'BWP' is full. Back up the
> Transaction log for the database to free up some log space.
Function COMMIT on connection R/3 failed
Perform rollback
Can we make changes to Database to make commit action frequently? Is there any parameters we could change to reduce the packet size? Is there some setting to be changed in SQL server?
Any Help will be appreciated.if you have disk space avialable you can allocate more space to the transaction log.
-
Client Deletion, Transaction log getting full.
Hi Gurus,
We are trying to delete a client by running:
clientremove
client = 200 (*200 being the client we want to remove)
select *
The transaction log disk space allocated is 50GB, it is getting full (in simple mode) and client deletion never completes. The size of the table it is accessing is 86 GB, and i think 200 client will be occupying around 40-45GB. Client 200 has 15.5 million rows in the table.
I am i giving proper command ?is there any explicit commit i can include or any workaround for deleting the client and not hammer the log file.
Thanks guys
Edited by: SAP_SQLDBA on Jan 22, 2010 6:51 PMHi,
Backup the active transaction log file and Shrink the file directly.
Please refer the following SAP Notes to get more information.
[ Note 625546 - Size of transaction log file is too big|https://websmp130.sap-ag.de/sap%28bD1lbiZjPTAwMQ==%29/bc/bsp/spn/sapnotes/index2.htm?numm=625546]
[ Note 421644 - SQL error 9002: The transaction log is full|https://websmp130.sap-ag.de/sap%28bD1lbiZjPTAwMQ==%29/bc/bsp/spn/sapnotes/index2.htm?numm=421644]
Which version of SQL Server u are using ? SP Level ?
Frequently perform Transaction Log backup (BACKUP TRANS) to remove inactive space within the Transaction Log Files.
Please refer [Note 307911 - Transaction Log Filling Up in SQL Server 7.0|https://websmp130.sap-ag.de/sap%28bD1lbiZjPTAwMQ==%29/bc/bsp/spn/sapnotes/index2.htm?numm=307911] to get more information about the reasons for such kind of situation.
Regards,
Bhavik G. Shroff -
Is the transaction log is changed when i execute select statemetns
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What does it return?
SELECT log_reuse_wait_desc FROM sys.databases WHERE database_id=2
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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Transaction log is full in production system ,when i was tried login into sap system it show the error message 'SNAP_NO_NEW_ENTRIES'.
our system is db2 and AIX ,can any body hlep us step by step procedure for reslove the issue .
For best answer will reward.
Thanks
Imran khanyou have to increase the sum of the logs in order to enlarge the database log...plz do not forget that the log must fit the underlying file system, eg. /db2/<SID>/dir_log..so you might have to increase this as well using SMITTY...
<b>(DB6) [IBM][CLI Driver][DB2/AIX64] SQL0964C The transaction log for the database is full. SQLSTATE=57011</b>
<i>[root] > su - db2<sid></i>
<i>1> db2 get db cfg for <SID> | grep -i logfilsiz</i>
Log file size (4KB) (LOGFILSIZ) = 16380
<i>2> db2 get db cfg for <SID> | grep -i logprimary</i>
Number of primary log files (LOGPRIMARY) = 20
<i>3> db2 get db cfg for <SID> | grep -i logsecond</i>
Number of secondary log files (LOGSECOND) = 40
so we have log file of max. 16.380 * 4.096 * 60 = 4.025.548.800 bytes (about 4 gb)...this needs to be increased by increasing either LOGPRIMARY and/or LOGSECONDARY...(assuming that your logfile size is 16kb...query db2 for your size!)
<i>4> db2 update db cfg for <SID> using logsecond 80 immediate</i>
DB20000I The UPDATE DATABASE CONFIGURATION command completed successfully.
SQL1363W One or more of the parameters submitted for immediate modification
were not changed dynamically. For these configuration parameters, all
applications must disconnect from this database before the changes become
effective.
<i>5> db2 get db cfg for <SID> | grep -i logprimary</i>
Number of primary log files (LOGPRIMARY) = 20
<i>6> db2 get db cfg for <SID> | grep -i logsecond</i>
Number of secondary log files (LOGSECOND) = 80
<i>7> db2stop</i>
02/20/2007 09:17:12 0 0 SQL1064N DB2STOP processing was successful.
SQL1064N DB2STOP processing was successful.
<i>8> db2start</i>
02/20/2007 09:17:19 0 0 SQL1063N DB2START processing was successful.
SQL1063N DB2START processing was successful.
-> plz keep in mind that the sap system needs to be down when re-starting db2...
check via snapshot:
<i>9> db2 get snapshot for database on <SID></i>
<b>Log space available to the database (Bytes)= 2353114756 (= 2.353 MB)
Log space used by the database (Bytes) = 4329925244 (= 4.329 MB)</b>
Maximum secondary log space used (Bytes) = 2993640963
Maximum total log space used (Bytes) = 4330248963
Secondary logs allocated currently = 46
Appl id holding the oldest transaction = 9
so now our log is about 6.5 gb ...<b>see sapnote 25.351 for details</b>...
GreetZ, AH -
Online redo logs fill-up due to long running SCM processes
DB2 v9.7
AIX v6.1 P570
Running Standard SAP Code
Going live with SCM system running SNP/DP GATP how can we avoid having our online redo logs fill-up due to long running processes (i.e., CTM. Process Chains, BOP, DP Runs) Need to know SAP Best Practice regarding this -
Per our developers, BOP jobs performs commit when everything is processed and update table in one go at end, Hence not possible to perform commit regularly. Actually they will have to run BOP for 3200 material with 98000 sales order items.
But after just running BOP for 40 material with 22000 sales orders line items we are getting DBIF_RSQL_SQL_ERROR + CX_SY_OPEN_SQL_DB dumps
Any assistance on this would be helpful...
Thanks -Fred
Check OSS notes for this error. The BOP compponent has a steady stream of corrections developed by SAP especially in older releases.
Also make sure your Livecache Build is consistent with SCM Release/ Patch level.
Rishi Menon -
Very high transaction log file growth
Hello
Running Exchange 2010 sp2 in a two node DAG configuration. Just recently i have noticed a very high transaction log file growth for one database. The transaction logs are growing so quickly that i have had to turn on circular logging in order to prevent
the log lun from filling up and causing the database to dismount. I have tried several things to try find out what is causing this issue. At first i thought this could be happening because of virus, an Active Sync user, a users outlook client, or our salesforce
integration, howerver when i used exmon, i could not see any unusual high user activity, also when i looked at the itemcount for all mailboxes in the particular database that is experiencing the high transaction log file growth, i could not see any mailboxes
with unusual high item count, below is the command i ran to determine this, i ran this command sever times. I also looked at the message tracking log files, and again could see no indication of a message loop or unusual high message traffic for a
particlar day. I also followed this guide hopping that it would allow me to see inside the transaction log files, but it didnt produce anything that would help me understand the cause of this issue. When i ran the below tool againts the transaction log files,
i saw DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD, or OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO, or HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH.
I am starting to run out of ideas on how to figure out what is causing the log file build up. Any help is greatly appreciated.
http://blogs.msdn.com/b/scottos/archive/2007/07/12/rough-and-tough-guide-to-identifying-patterns-in-ese-transaction-log-files.aspx
Get-Mailbox -database databasethatkeepsgrowing | Get-MailboxStatistics | Sort-Object ItemCount -descending |Select-Object DisplayName,ItemCount,@{name="MailboxSize";exp={$_.totalitemsize}} -first 10 | Convertto-Html | out-File c:\temp\report.htm
Bulls on ParadeIf you have users with iPhones or Smart Phones using ActiveSync then one of the quickest ways to see if this is the issue is to have users shot those phones off to see if the problem is resolved. If it is one or more iPhones then perhaps look at
what IOS they are on and get them to update to the latest version or adjust the ActiveSync connection timeout. NOTE: There was an issue where iPhones caused runaway transactions logs and I believe it was resolved with IOS 4.0.1
There was also a problem with the MS CRM client awhile back so if you are using that check out this link.
http://social.microsoft.com/Forums/en/crm/thread/6fba6c7f-c514-4e4e-8a2d-7e754b647014
I would also deploy some tracking methods to see if you can hone in on the culprits, i.e. If you want to see if the problem is coming from an internal Device/Machine you can use one of the following
MS USER MONITOR:
http://www.microsoft.com/downloads/en/details.aspx?FamilyId=9A49C22E-E0C7-4B7C-ACEF-729D48AF7BC9&displaylang=en and here is a link on how to use it
http://www.msexchange.org/tutorials/Microsoft-Exchange-Server-User-Monitor.html
And this is a great article as well
http://blogs.msdn.com/b/scottos/archive/2007/07/12/rough-and-tough-guide-to-identifying-patterns-in-ese-transaction-log-files.aspx
Also check out ExMon since you can use it to confirm which mailbox is unusually active , and then take the appropriate action.
http://www.microsoft.com/downloads/en/details.aspx?FamilyId=9A49C22E-E0C7-4B7C-ACEF-729D48AF7BC9&displaylang=en
Troy Werelius
www.Lucid8.com
Search, Recover, & Extract Mailboxes, Folders, & Email Items from Offline EDB's and Live Exchange Servers with Lucid8's DigiScope
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