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Specifies the number of files that are transferred as a group between a client and the server between transaction commit points. You may improve the performance of the backup-archive client BACKUP, ARCHIVE, RESTORE, and RETRIEVE commands by using a larger value for this option.
The minimum value is 4 files and the maximum value is 256 files. The default value is 40 files. The files transferred for the above commands are either actual files, directories, or both. the server counts each file and each directory as one file.
This option is related to the TXNBYTELIMIT option in the client options file. TXNBYTELIMIT controls the number of bytes, as opposed to files, that are transferred in a group of files between transaction commit points. At the completion of transferring a file, the client commits the transaction if the number of bytes transferred during the transaction reaches or exceeds the value of TXNBYTELIMIT, regardless of the number of files transferred.
You can use this option to specify the number of files, or you can have the server make the adjustments. If you set the SELFTUNETXNSIZE server option to YES, the server can automatically adjust the number of files.
Syntax
>>-TXNGroupmax--number_of_files--------------------------------><
Parameters
Examples
txngroupmax 50