IBM Tivoli Storage Manager for UNIX and Linux: Backup-Archive ...

TxnbytelimitAuthorized UserSupportedOptionsSyntaxThe txnbytelimit option specifies the number of kilobytes the client programbuffers before it sends a transaction to the server. A transaction is the unit of workexchanged between the client and server. Because the client program can transfermore than one file or directory between the client and server before it commits thedata to server storage, a transaction can contain more than one file or directory.This is called a transaction group.This option permits you to control the amount of data sent between the client andserver before the server commits the data and changes to the server database, thuschanging the speed with which the client performs work. The amount of data sentapplies when files are batched together during backup or when receiving files fromthe server during a restore procedure.The server administrator can limit the number of files or directories containedwithin a transaction group using the txngroupmax option on the server, so theactual size of a transaction can be less than your txnbytelimit. Once this number isreached, the client sends the files to the server even if the transaction byte limit isnot reached.ClientsThis option is valid for all UNIX and Linux clients.FilePlace this option in the dsm.sys file. You can set this option on the Generalcategory Transaction Buffer Size field of the Preferences editor.►► TXNBytelimit number ►◄ParametersExamplesnumberSpecifies the number of kilobytes the client program can buffer together in atransaction before it sends data to the server. The range of values is 300through 2097152 (2 GB); the default is 25600.Options file:txnb 25600Command line:-txnb=25600This option is valid only on the initial command line. It is not valid in interactivemode.Chapter 9. Using processing options 375