Re: 'q' file resize
Roger, If he was using LL would a rcdmqimg force the checkpoints?? bb From: Roger Lacroix <[EMAIL PROTECTED]> Reply-To: MQSeries List <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: 'q' file resize Date: Mon, 15 Nov 2004 15:50:15 -0500 Hi Jeff, The 'q file' will be reduced when either 2 checkpoints have happened where no messages are written to the queue or if the q has a zero depth and you bounce the queue manager. Regards, Roger Lacroix Capitalware Inc. http://www.capitalware.biz Quoting Jeff A Tressler <[EMAIL PROTECTED]>: > We have a disk drive full and it is all due to two files. These are > the 'q' files that store the actual messages. The queue depth > has finally reached zero but these q files still are taking a > lot of disk space. > > I beleive these file will be resized to a more appropriate size > but dont know how often this occurs. Does anyone have > any ideas? > > We are running Windows 2000, WebSphere MQ v5.3 > > Instructions for managing your mailing list subscription are provided in > the Listserv General Users Guide available at http://www.lsoft.com > Archive: http://vm.akh-wien.ac.at/MQSeries.archive > Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: 'q' file resize
This answered my previous question: 3) When we take a media image of the queue We compact a local queue prior to taking a media image. bobbee From: Rick Tsujimoto <[EMAIL PROTECTED]> Reply-To: MQSeries List <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Re: 'q' file resize Date: Mon, 15 Nov 2004 16:05:56 -0500 Jeff, Attached is a snippet of an old posting from Paul Clarke: >The space will not get freed up until either a) you delete and redefine the >queue, or b) the QMGR is stopped and restarted. This is not quite true, we do indeed release disk space at these times but these aren't the only times... The others are :- 1) At a checkpoint If checkpoint sees the same queue empty multiple times and the queue is using a significant amount of disk space then the queue is truncated. 2) When the queue is unloaded When a queue isn't open by any application (including internal MQ 'applications' e.g. MCA) then it is scheduled for unload. The queue will be unloaded the second time a checkpoint sees the queue scheduled for unload. 3) When we take a media image of the queue We compact a local queue prior to taking a media image. I imagine the apparent arbitrary nature that was referred to in the earlier append is just the moment when the queue became unused or when a checkpoint was taken. Jeff A Tressler <[EMAIL PROTECTED]> Sent by: MQSeries List <[EMAIL PROTECTED]> 11/15/2004 03:13 PM Please respond to MQSeries List <[EMAIL PROTECTED]> To [EMAIL PROTECTED] cc Subject 'q' file resize We have a disk drive full and it is all due to two files. These are the 'q' files that store the actual messages. The queue depth has finally reached zero but these q files still are taking a lot of disk space. I beleive these file will be resized to a more appropriate size but dont know how often this occurs. Does anyone have any ideas? We are running Windows 2000, WebSphere MQ v5.3 Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: 'q' file resize
!!! An undocumented feature? Create a local q called PETER.TEST. File size is 2K. Add 25000 1K messages to it. File size is 37808 KB. Destructively get all the messages, bringing the depth down to 0. File size is still 37808 KB. Issue Clear on the queue, even though it is empty. File size is 2K. Thanks Phil! I wonder why no one from IBM mentioned this simple little trick. -Original Message- From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Monday, November 15, 2004 5:13 PM To: [EMAIL PROTECTED] Subject: Re: 'q' file resize Try it your self and see. "Potkay, Peter M (ISD, IT)" To: [EMAIL PROTECTED] <[EMAIL PROTECTED]cc: RTFORD.COM> Subject: Re: 'q' file resize Sent by: MQSeries List <[EMAIL PROTECTED] ac.at> 11/15/2004 03:45 PM Please respond to MQSeries List His Q is already at zero, so I don't think the clear command will help. http://www.mqseries.net/phpBB2/viewtopic.php?t=18537&highlight=queue+file "The msgs have been removed from the msg chains so they are no longer accessible, but they remain in the physical queue file until the file is compressed. This happens at a checkpoint if nobody has the queue open and it has contained no msgs for the previous 2 checkpoints, or at qmgr shutdown." -Original Message- From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Monday, November 15, 2004 3:38 PM To: [EMAIL PROTECTED] Subject: Re: 'q' file resize Issue a clear queue command on the empty queue, but the queue cannot be opened elsewhere. Jeff A Tressler <[EMAIL PROTECTED]To: [EMAIL PROTECTED] > cc: Sent by: MQSeriesSubject: 'q' file resize List <[EMAIL PROTECTED] n.ac.at> 11/15/2004 03:13 PM Please respond to MQSeries List We have a disk drive full and it is all due to two files. These are the 'q' files that store the actual messages. The queue depth has finally reached zero but these q files still are taking a lot of disk space. I beleive these file will be resized to a more appropriate size but dont know how often this occurs. Does anyone have any ideas? We are running Windows 2000, WebSphere MQ v5.3 Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return email and delete this communication and destroy all copies. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return email and delete this communication and destroy all copies. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: 'q' file resize
Try it your self and see. "Potkay, Peter M (ISD, IT)" To: [EMAIL PROTECTED] <[EMAIL PROTECTED]cc: RTFORD.COM> Subject: Re: 'q' file resize Sent by: MQSeries List <[EMAIL PROTECTED] ac.at> 11/15/2004 03:45 PM Please respond to MQSeries List His Q is already at zero, so I don't think the clear command will help. http://www.mqseries.net/phpBB2/viewtopic.php?t=18537&highlight=queue+file "The msgs have been removed from the msg chains so they are no longer accessible, but they remain in the physical queue file until the file is compressed. This happens at a checkpoint if nobody has the queue open and it has contained no msgs for the previous 2 checkpoints, or at qmgr shutdown." -Original Message- From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Monday, November 15, 2004 3:38 PM To: [EMAIL PROTECTED] Subject: Re: 'q' file resize Issue a clear queue command on the empty queue, but the queue cannot be opened elsewhere. Jeff A Tressler <[EMAIL PROTECTED]To: [EMAIL PROTECTED] > cc: Sent by: MQSeriesSubject: 'q' file resize List <[EMAIL PROTECTED] n.ac.at> 11/15/2004 03:13 PM Please respond to MQSeries List We have a disk drive full and it is all due to two files. These are the 'q' files that store the actual messages. The queue depth has finally reached zero but these q files still are taking a lot of disk space. I beleive these file will be resized to a more appropriate size but dont know how often this occurs. Does anyone have any ideas? We are running Windows 2000, WebSphere MQ v5.3 Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return email and delete this communication and destroy all copies. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: 'q' file resize
Jeff, Attached is a snippet of an old posting from Paul Clarke: >The space will not get freed up until either a) you delete and redefine the >queue, or b) the QMGR is stopped and restarted. This is not quite true, we do indeed release disk space at these times but these aren't the only times... The others are :- 1) At a checkpoint If checkpoint sees the same queue empty multiple times and the queue is using a significant amount of disk space then the queue is truncated. 2) When the queue is unloaded When a queue isn't open by any application (including internal MQ 'applications' e.g. MCA) then it is scheduled for unload. The queue will be unloaded the second time a checkpoint sees the queue scheduled for unload. 3) When we take a media image of the queue We compact a local queue prior to taking a media image. I imagine the apparent arbitrary nature that was referred to in the earlier append is just the moment when the queue became unused or when a checkpoint was taken. Jeff A Tressler <[EMAIL PROTECTED]> Sent by: MQSeries List <[EMAIL PROTECTED]> 11/15/2004 03:13 PM Please respond to MQSeries List <[EMAIL PROTECTED]> To [EMAIL PROTECTED] cc Subject 'q' file resize We have a disk drive full and it is all due to two files. These are the 'q' files that store the actual messages. The queue depth has finally reached zero but these q files still are taking a lot of disk space. I beleive these file will be resized to a more appropriate size but dont know how often this occurs. Does anyone have any ideas? We are running Windows 2000, WebSphere MQ v5.3 Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: 'q' file resize
Hi Jeff, The 'q file' will be reduced when either 2 checkpoints have happened where no messages are written to the queue or if the q has a zero depth and you bounce the queue manager. Regards, Roger Lacroix Capitalware Inc. http://www.capitalware.biz Quoting Jeff A Tressler <[EMAIL PROTECTED]>: > We have a disk drive full and it is all due to two files. These are > the 'q' files that store the actual messages. The queue depth > has finally reached zero but these q files still are taking a > lot of disk space. > > I beleive these file will be resized to a more appropriate size > but dont know how often this occurs. Does anyone have > any ideas? > > We are running Windows 2000, WebSphere MQ v5.3 > > Instructions for managing your mailing list subscription are provided in > the Listserv General Users Guide available at http://www.lsoft.com > Archive: http://vm.akh-wien.ac.at/MQSeries.archive > Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: 'q' file resize
His Q is already at zero, so I don't think the clear command will help. http://www.mqseries.net/phpBB2/viewtopic.php?t=18537&highlight=queue+file "The msgs have been removed from the msg chains so they are no longer accessible, but they remain in the physical queue file until the file is compressed. This happens at a checkpoint if nobody has the queue open and it has contained no msgs for the previous 2 checkpoints, or at qmgr shutdown." -Original Message- From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Monday, November 15, 2004 3:38 PM To: [EMAIL PROTECTED] Subject: Re: 'q' file resize Issue a clear queue command on the empty queue, but the queue cannot be opened elsewhere. Jeff A Tressler <[EMAIL PROTECTED]To: [EMAIL PROTECTED] >cc: Sent by: MQSeriesSubject: 'q' file resize List <[EMAIL PROTECTED] n.ac.at> 11/15/2004 03:13 PM Please respond to MQSeries List We have a disk drive full and it is all due to two files. These are the 'q' files that store the actual messages. The queue depth has finally reached zero but these q files still are taking a lot of disk space. I beleive these file will be resized to a more appropriate size but dont know how often this occurs. Does anyone have any ideas? We are running Windows 2000, WebSphere MQ v5.3 Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return email and delete this communication and destroy all copies. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: 'q' file resize
Issue a clear queue command on the empty queue, but the queue cannot be opened elsewhere. Jeff A Tressler <[EMAIL PROTECTED]To: [EMAIL PROTECTED] >cc: Sent by: MQSeriesSubject: 'q' file resize List <[EMAIL PROTECTED] n.ac.at> 11/15/2004 03:13 PM Please respond to MQSeries List We have a disk drive full and it is all due to two files. These are the 'q' files that store the actual messages. The queue depth has finally reached zero but these q files still are taking a lot of disk space. I beleive these file will be resized to a more appropriate size but dont know how often this occurs. Does anyone have any ideas? We are running Windows 2000, WebSphere MQ v5.3 Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
'q' file resize
We have a disk drive full and it is all due to two files. These are the 'q' files that store the actual messages. The queue depth has finally reached zero but these q files still are taking a lot of disk space. I beleive these file will be resized to a more appropriate size but dont know how often this occurs. Does anyone have any ideas? We are running Windows 2000, WebSphere MQ v5.3 Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
