How to detect applications and users that hold transactions open too long?

To do this, you need Firebird 2.1 or a higher version. First, run gstat tool (from your Firebird installation's bin directory), and you'll get an output like this:

gstat -h faqs.gdb

Database "faqs.gdb"
Database header page information:
Flags 0
Checksum 12345
Generation 919
Page size 4096
ODS version 11.1
Oldest transaction 812
Oldest active 813
Oldest snapshot 813
Next transaction 814

Now, connect to that database and query the MON$TRANSACTIONS table to get the MON$ATTACHMENT_ID for that transaction, and then query the MON$ATTACHMENTS table to get the user name, application name, IP address and even PID on the client machine. We are looking for the oldest active transaction, so in this case, a query would look like:

where mt.MON$TRANSACTION_ID = 813;

Do you find this FAQ incorrect or incomplete? Please e-mail us what needs to be changed. To ensure quality, each change is checked by our editors (and often tested on live Firebird databases), before it enters the main FAQ database. If you desire so, the changes will be credited to your name. To learn more, visit our add content page.

If you are a commercial tool maker and your tool features a great way to handle the issue written about in this FAQ, please check out our advertisement page.

All contents are copyright © 2007-2022 unless otherwise stated in the text.

Links   Firebird   News   FlameRobin   Powered by FB: Home Inventory   Euchre  
Add content   Advertise   About  

 Installation and setup
 Backup and restore
 Connectivity and API
 Errors and error codes