hi, we are using db2 udb v8.1 for windows, i have changed the buffer
pool size to accommadate better performance, say size 200000, if i
have multiple connection to the same database from application
server, will each connection take the memory 800M (200000 x 4k = 800
M), so the memory took will be 800M times number of connections, or
the total memory get from bufferpool will be 800M?
22  3479 
"xixi" <da****@yahoo.c om> wrote in message
news:c0******** *************** ***@posting.goo gle.com... hi, we are using db2 udb v8.1 for windows, i have changed the buffer
pool size to accommadate better performance, say size 200000, if i
have multiple connection to the same database from application
server, will each connection take the memory 800M (200000 x 4k = 800
M), so the memory took will be 800M times number of connections, or
the total memory get from bufferpool will be 800M?
DB2 Buffer pools are shared memory used by all connections to the database.
Data pages and index pages are fetched from disk and buffered in the DB2
buffer pools. Data stays in the buffer pool until a new page needs to be
loaded and the there is no empty space. Then, existing pages in the buffer
pool are over-written based on a least recently used algorithm (and other
more complex considerations) .
Buffer pool memory is allocated when the first user connects to a database
or the database is activated.
"xixi" <da****@yahoo.c om> wrote in message
news:c0******** *************** ***@posting.goo gle.com... hi, we are using db2 udb v8.1 for windows, i have changed the buffer
pool size to accommadate better performance, say size 200000, if i
have multiple connection to the same database from application
server, will each connection take the memory 800M (200000 x 4k = 800
M), so the memory took will be 800M times number of connections, or
the total memory get from bufferpool will be 800M?
DB2 Buffer pools are shared memory used by all connections to the database.
Data pages and index pages are fetched from disk and buffered in the DB2
buffer pools. Data stays in the buffer pool until a new page needs to be
loaded and the there is no empty space. Then, existing pages in the buffer
pool are over-written based on a least recently used algorithm (and other
more complex considerations) .
Buffer pool memory is allocated when the first user connects to a database
or the database is activated.
the db2mtrk system command can help you see how much memory is used by
bufferpools and other db2 components.
PM
"xixi" <da****@yahoo.c om> a écrit dans le message de
news:c0******** *************** ***@posting.goo gle.com... hi, we are using db2 udb v8.1 for windows, i have changed the buffer
pool size to accommadate better performance, say size 200000, if i
have multiple connection to the same database from application
server, will each connection take the memory 800M (200000 x 4k = 800
M), so the memory took will be 800M times number of connections, or
the total memory get from bufferpool will be 800M?
the db2mtrk system command can help you see how much memory is used by
bufferpools and other db2 components.
PM
"xixi" <da****@yahoo.c om> a écrit dans le message de
news:c0******** *************** ***@posting.goo gle.com... hi, we are using db2 udb v8.1 for windows, i have changed the buffer
pool size to accommadate better performance, say size 200000, if i
have multiple connection to the same database from application
server, will each connection take the memory 800M (200000 x 4k = 800
M), so the memory took will be 800M times number of connections, or
the total memory get from bufferpool will be 800M?
i use db2mtrk and get this , i notice that all total memory bytes add
togeter not over 1g, but our server under db2sysc.exe has over 2g mem
used, why is that?
Memory for instance
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 327680 bytes
Catalog Cache Heap is of size 163840 bytes
Buffer Pool Heap is of size 8339456 bytes
Buffer Pool Heap is of size 1179648 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 278528 bytes
Database Heap is of size 3342336 bytes
Database Monitor Heap is of size 180224 bytes
Other Memory is of size 7700480 bytes
Total: 23035904 bytes
Memory for agent 2208
Other Memory is of size 16384 bytes
Application Heap is of size 491520 bytes
Application Control Heap is of size 16384 bytes
Total: 524288 bytes
Memory for agent 2252
Other Memory is of size 32768 bytes
Application Heap is of size 278528 bytes
Application Control Heap is of size 16384 bytes
Total: 327680 bytes
Memory for agent 2172
Other Memory is of size 16384 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 245760 bytes
i use db2mtrk and get this , i notice that all total memory bytes add
togeter not over 1g, but our server under db2sysc.exe has over 2g mem
used, why is that?
Memory for instance
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 327680 bytes
Catalog Cache Heap is of size 163840 bytes
Buffer Pool Heap is of size 8339456 bytes
Buffer Pool Heap is of size 1179648 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 278528 bytes
Database Heap is of size 3342336 bytes
Database Monitor Heap is of size 180224 bytes
Other Memory is of size 7700480 bytes
Total: 23035904 bytes
Memory for agent 2208
Other Memory is of size 16384 bytes
Application Heap is of size 491520 bytes
Application Control Heap is of size 16384 bytes
Total: 524288 bytes
Memory for agent 2252
Other Memory is of size 32768 bytes
Application Heap is of size 278528 bytes
Application Control Heap is of size 16384 bytes
Total: 327680 bytes
Memory for agent 2172
Other Memory is of size 16384 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 245760 bytes
hi, please ignore my recent post email, here is the right memory
tracking, i have three database under same instance, but we only focus
one, is that even i don't have access to the other two databases,
they also take up memory? i only only three bufferpools under each
database, ibmdefaultbf and the other two i created, so why there are
six bufferpool heap ? what is the difference between bufferpool heap
and bufferpool size? thanks
D:\Program Files\IBM\SQLLI B\BIN>db2 connect to njipd
Database Connection Information
Database server = DB2/NT64 8.1.3
SQL authorization ID = ADMIN
Local database alias = NJIPD
D:\Program Files\IBM\SQLLI B\BIN>db2mtrk -i -p -v
Tracking Memory on: 2004/04/30 at 16:04:55
Memory for instance
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 442368 bytes
Catalog Cache Heap is of size 425984 bytes
Buffer Pool Heap is of size 1196032 bytes
Buffer Pool Heap is of size 8355840 bytes
Buffer Pool Heap is of size 427737088 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 1736704 bytes
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 442368 bytes
Catalog Cache Heap is of size 425984 bytes
Buffer Pool Heap is of size 2473984 bytes
Buffer Pool Heap is of size 23445504 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 1753088 bytes
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 6635520 bytes
Catalog Cache Heap is of size 4259840 bytes
Buffer Pool Heap is of size 1196032 bytes
Buffer Pool Heap is of size 8355840 bytes
Buffer Pool Heap is of size 1069350912 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 4571136 bytes
Database Monitor Heap is of size 344064 bytes
Other Memory is of size 13451264 bytes
Total: 1593901056 bytes
Memory for agent 3588
No memory allocated
Memory for agent 3228
Other Memory is of size 32768 bytes
Application Heap is of size 65536 bytes
Application Control Heap is of size 16384 bytes
Total: 114688 bytes
Memory for agent 3560
No memory allocated
Memory for agent 2428
No memory allocated
Memory for agent 3764
Other Memory is of size 32768 bytes
Application Heap is of size 65536 bytes
Application Control Heap is of size 16384 bytes
Total: 114688 bytes
Memory for agent 2608
Other Memory is of size 32768 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 262144 bytes
Memory for agent 488
Other Memory is of size 32768 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 262144 bytes
Memory for agent 3656
No memory allocated
Memory for agent 2820
No memory allocated
Memory for agent 3132
No memory allocated
Memory for agent 3064
No memory allocated
Memory for agent 3428
No memory allocated
Memory for agent 2952
No memory allocated
Memory for agent 492
No memory allocated
Memory for agent 1904
No memory allocated
Memory for agent 3996
No memory allocated
Memory for agent 3520
No memory allocated
Memory for agent 3604
No memory allocated
Memory for agent 4092
No memory allocated
Memory for agent 2272
No memory allocated
Memory for agent 3848
No memory allocated
Memory for agent 2192
No memory allocated
Memory for agent 3472
Other Memory is of size 32768 bytes
Application Heap is of size 147456 bytes
Application Control Heap is of size 16384 bytes
Total: 196608 bytes
Memory for agent 3368
No memory allocated
Memory for agent 2828
No memory allocated
Memory for agent 636
No memory allocated
Memory for agent 3748
No memory allocated
Memory for agent 3352
No memory allocated
Memory for agent 2696
No memory allocated
Memory for agent 1764
Other Memory is of size 32768 bytes
Application Heap is of size 704512 bytes
Application Control Heap is of size 16384 bytes
Total: 753664 bytes
Memory for agent 2464
No memory allocated
Memory for agent 3756
No memory allocated
Memory for agent 2744
No memory allocated
Memory for agent 2288
No memory allocated
Memory for agent 3552
No memory allocated
Memory for agent 2932
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 229376 bytes
Memory for agent 544
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 229376 bytes
Memory for agent 2060
No memory allocated
Memory for agent 2088
No memory allocated
Memory for agent 1828
Other Memory is of size 32768 bytes
Application Heap is of size 86130688 bytes
Application Control Heap is of size 16384 bytes
Total: 86179840 bytes
D:\Program Files\IBM\SQLLI B\BIN>
hi, please ignore my recent post email, here is the right memory
tracking, i have three database under same instance, but we only focus
one, is that even i don't have access to the other two databases,
they also take up memory? i only only three bufferpools under each
database, ibmdefaultbf and the other two i created, so why there are
six bufferpool heap ? what is the difference between bufferpool heap
and bufferpool size? thanks
D:\Program Files\IBM\SQLLI B\BIN>db2 connect to njipd
Database Connection Information
Database server = DB2/NT64 8.1.3
SQL authorization ID = ADMIN
Local database alias = NJIPD
D:\Program Files\IBM\SQLLI B\BIN>db2mtrk -i -p -v
Tracking Memory on: 2004/04/30 at 16:04:55
Memory for instance
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 442368 bytes
Catalog Cache Heap is of size 425984 bytes
Buffer Pool Heap is of size 1196032 bytes
Buffer Pool Heap is of size 8355840 bytes
Buffer Pool Heap is of size 427737088 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 1736704 bytes
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 442368 bytes
Catalog Cache Heap is of size 425984 bytes
Buffer Pool Heap is of size 2473984 bytes
Buffer Pool Heap is of size 23445504 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 1753088 bytes
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 6635520 bytes
Catalog Cache Heap is of size 4259840 bytes
Buffer Pool Heap is of size 1196032 bytes
Buffer Pool Heap is of size 8355840 bytes
Buffer Pool Heap is of size 1069350912 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 4571136 bytes
Database Monitor Heap is of size 344064 bytes
Other Memory is of size 13451264 bytes
Total: 1593901056 bytes
Memory for agent 3588
No memory allocated
Memory for agent 3228
Other Memory is of size 32768 bytes
Application Heap is of size 65536 bytes
Application Control Heap is of size 16384 bytes
Total: 114688 bytes
Memory for agent 3560
No memory allocated
Memory for agent 2428
No memory allocated
Memory for agent 3764
Other Memory is of size 32768 bytes
Application Heap is of size 65536 bytes
Application Control Heap is of size 16384 bytes
Total: 114688 bytes
Memory for agent 2608
Other Memory is of size 32768 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 262144 bytes
Memory for agent 488
Other Memory is of size 32768 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 262144 bytes
Memory for agent 3656
No memory allocated
Memory for agent 2820
No memory allocated
Memory for agent 3132
No memory allocated
Memory for agent 3064
No memory allocated
Memory for agent 3428
No memory allocated
Memory for agent 2952
No memory allocated
Memory for agent 492
No memory allocated
Memory for agent 1904
No memory allocated
Memory for agent 3996
No memory allocated
Memory for agent 3520
No memory allocated
Memory for agent 3604
No memory allocated
Memory for agent 4092
No memory allocated
Memory for agent 2272
No memory allocated
Memory for agent 3848
No memory allocated
Memory for agent 2192
No memory allocated
Memory for agent 3472
Other Memory is of size 32768 bytes
Application Heap is of size 147456 bytes
Application Control Heap is of size 16384 bytes
Total: 196608 bytes
Memory for agent 3368
No memory allocated
Memory for agent 2828
No memory allocated
Memory for agent 636
No memory allocated
Memory for agent 3748
No memory allocated
Memory for agent 3352
No memory allocated
Memory for agent 2696
No memory allocated
Memory for agent 1764
Other Memory is of size 32768 bytes
Application Heap is of size 704512 bytes
Application Control Heap is of size 16384 bytes
Total: 753664 bytes
Memory for agent 2464
No memory allocated
Memory for agent 3756
No memory allocated
Memory for agent 2744
No memory allocated
Memory for agent 2288
No memory allocated
Memory for agent 3552
No memory allocated
Memory for agent 2932
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 229376 bytes
Memory for agent 544
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 229376 bytes
Memory for agent 2060
No memory allocated
Memory for agent 2088
No memory allocated
Memory for agent 1828
Other Memory is of size 32768 bytes
Application Heap is of size 86130688 bytes
Application Control Heap is of size 16384 bytes
Total: 86179840 bytes
D:\Program Files\IBM\SQLLI B\BIN>
Xixi, I believe the buffer pool heaps are defined by the system only.
They are there in case something goes wrong with your bp definitions and
the db cannot be activated.
DB2 will then use these four heaps (one heap per page size 4k,8k,16k,32k).
You do not have to worry about them as to their use and spaceutilizatio n.
HTH, Pierre.
xixi wrote: hi, please ignore my recent post email, here is the right memory
tracking, i have three database under same instance, but we only focus
one, is that even i don't have access to the other two databases,
they also take up memory? i only only three bufferpools under each
database, ibmdefaultbf and the other two i created, so why there are
six bufferpool heap ? what is the difference between bufferpool heap
and bufferpool size? thanks
D:\Program Files\IBM\SQLLI B\BIN>db2 connect to njipd
Database Connection Information
Database server = DB2/NT64 8.1.3
SQL authorization ID = ADMIN
Local database alias = NJIPD
D:\Program Files\IBM\SQLLI B\BIN>db2mtrk -i -p -v
Tracking Memory on: 2004/04/30 at 16:04:55
Memory for instance
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 442368 bytes
Catalog Cache Heap is of size 425984 bytes
Buffer Pool Heap is of size 1196032 bytes
Buffer Pool Heap is of size 8355840 bytes
Buffer Pool Heap is of size 427737088 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 1736704 bytes
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 442368 bytes
Catalog Cache Heap is of size 425984 bytes
Buffer Pool Heap is of size 2473984 bytes
Buffer Pool Heap is of size 23445504 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 1753088 bytes
Backup/Restore/Util Heap is of size 16384 bytes
Package Cache is of size 6635520 bytes
Catalog Cache Heap is of size 4259840 bytes
Buffer Pool Heap is of size 1196032 bytes
Buffer Pool Heap is of size 8355840 bytes
Buffer Pool Heap is of size 1069350912 bytes
Buffer Pool Heap is of size 655360 bytes
Buffer Pool Heap is of size 393216 bytes
Buffer Pool Heap is of size 262144 bytes
Buffer Pool Heap is of size 196608 bytes
Lock Manager Heap is of size 4243456 bytes
Database Heap is of size 4571136 bytes
Database Monitor Heap is of size 344064 bytes
Other Memory is of size 13451264 bytes
Total: 1593901056 bytes
Memory for agent 3588
No memory allocated
Memory for agent 3228
Other Memory is of size 32768 bytes
Application Heap is of size 65536 bytes
Application Control Heap is of size 16384 bytes
Total: 114688 bytes
Memory for agent 3560
No memory allocated
Memory for agent 2428
No memory allocated
Memory for agent 3764
Other Memory is of size 32768 bytes
Application Heap is of size 65536 bytes
Application Control Heap is of size 16384 bytes
Total: 114688 bytes
Memory for agent 2608
Other Memory is of size 32768 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 262144 bytes
Memory for agent 488
Other Memory is of size 32768 bytes
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 262144 bytes
Memory for agent 3656
No memory allocated
Memory for agent 2820
No memory allocated
Memory for agent 3132
No memory allocated
Memory for agent 3064
No memory allocated
Memory for agent 3428
No memory allocated
Memory for agent 2952
No memory allocated
Memory for agent 492
No memory allocated
Memory for agent 1904
No memory allocated
Memory for agent 3996
No memory allocated
Memory for agent 3520
No memory allocated
Memory for agent 3604
No memory allocated
Memory for agent 4092
No memory allocated
Memory for agent 2272
No memory allocated
Memory for agent 3848
No memory allocated
Memory for agent 2192
No memory allocated
Memory for agent 3472
Other Memory is of size 32768 bytes
Application Heap is of size 147456 bytes
Application Control Heap is of size 16384 bytes
Total: 196608 bytes
Memory for agent 3368
No memory allocated
Memory for agent 2828
No memory allocated
Memory for agent 636
No memory allocated
Memory for agent 3748
No memory allocated
Memory for agent 3352
No memory allocated
Memory for agent 2696
No memory allocated
Memory for agent 1764
Other Memory is of size 32768 bytes
Application Heap is of size 704512 bytes
Application Control Heap is of size 16384 bytes
Total: 753664 bytes
Memory for agent 2464
No memory allocated
Memory for agent 3756
No memory allocated
Memory for agent 2744
No memory allocated
Memory for agent 2288
No memory allocated
Memory for agent 3552
No memory allocated
Memory for agent 2932
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 229376 bytes
Memory for agent 544
Application Heap is of size 212992 bytes
Application Control Heap is of size 16384 bytes
Total: 229376 bytes
Memory for agent 2060
No memory allocated
Memory for agent 2088
No memory allocated
Memory for agent 1828
Other Memory is of size 32768 bytes
Application Heap is of size 86130688 bytes
Application Control Heap is of size 16384 bytes
Total: 86179840 bytes
D:\Program Files\IBM\SQLLI B\BIN>
--
Pierre Saint-Jacques - Reply to: sesconsjunk at attglobaljunk dot com
Reconstruct address: Remove the two junk and replace at and dot by
their symbols.
IBM DB2 Cerified Solutions Expert - Administration
SES Consultants Inc. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
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A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
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Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: bsmnconsultancy |
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