Transaction Manager


Transaction manager runs within a KJS process and creates two files: a restart file and a restart.bak file. In addition, a log file needs to be provided for each KJS process.

Provide a mirror directory for storing the restart.bak file of each KJS process.

 
   

Provide a log volume disk name for storing the log file for each KJS process.

 
   

Decide whether to use a raw partition of a file for the transaction logs.

 
   

If using a raw partition, create the partition prior to running the installation program.

 

 

Mirror Directory

The default directory, <NAS install directory>\TXNMGR_MIRROR\, resides on the same disk as the NAS installation directory, which is the same disk used to store the restart file. Specify a different physical drive at installation time so that the restart.bak file is stored in a different physical location than restart, in case restart ever becomes unavailable. If a different drive path is specified, create the directory on that drive prior to running the installation program.

Log Volume Name

The default name is <NAS install directory>\TXNMGR\ENG<number>. For each KJS process, ENG<number> changes to match the process number. So, for one kjs, the default directory is <NAS install directory>\TXNMGR \ENG1; for a second kjs, the directory is <NAS install directory>\TXNMGR\ENG2, and so on.

File

If specifying a file name, use the default drive and log volume disk name provided by the installation program.

If not using the default drive and file name because you’d rather store the log file elsewhere, create a directory and file on a different disk drive and specify this directory name at installation time. Note that the file must be greater than 4MB, so make sure you have sufficient disk space wherever you create the directory and file. Refer to the operating system documentation for information on how to create a directory and file on a different disk drive.

Raw Partition

If using a raw partition, create a raw partition on a physical drive prior to running the installation program and then, at installation, specify the path for this partition. Refer to the operating system documentation for information on how to create a raw partition.

If creating a raw partition, specify a starting page number (Offset value) during the installation. You must also specify the number of the pages (Size value) in the log file. Make sure that the size allocated for the log file is greater than 4Mb; in other words, the file should be greater than or equal to 1000 pages, at a size of roughly 4k per page.