onconfig paramters for ontape backup db

In onconfig is it enough to define the TAPEDEV device path? (i.e. can all the other Paramters be used in there default valuse) All i need to do is a simple backup of the DB on tape in my unix. If the other Paramters in onconfig need values, can someone give me their standard ones. TYPEDEV ? TYPEBLK ? TYPESIZE ? LTAPEDEV ? LTAPEBLK ? LTAPESIZE ? Thanks Gilad Finkelstein Email: finkelg@cpm.elex.co.il

The default ONCONFIG values can be used, but they're unlikely all to be suitable. From memory, the default for TAPESIZE is tiny - about 10,000 pages - so you'd want to beef this up to at least the size of your database server, and you might as well set it to slightly below the capacity of your tape drive. Neil Gilad finkelstein wrote in message ... >In onconfig is it enough to define the TAPEDEV device path? (i.e. can all >the other Paramters be used in there default valuse) >All i need to do is a simple backup of the DB on tape in my unix. >If the other Paramters in onconfig need values, can someone give me their >standard ones. >TYPEDEV ? >TYPEBLK ? >TYPESIZE ? >LTAPEDEV ? >LTAPEBLK ? >LTAPESIZE ?> >Thanks > Gilad Finkelstein Email: finkelg@cpm.elex.co.il > >

Gilad finkelstein wrote: > > In onconfig is it enough to define the TAPEDEV device path? (i.e. can all > the other Paramters be used in there default valuse) > All i need to do is a simple backup of the DB on tape in my unix. > If the other Paramters in onconfig need values, can someone give me their > standard ones. > TYPEDEV ? Whatever you tape device is, or the disk file/device you will use instead. > TYPEBLK ? For actual tape block size of 64K works well for most streaming drives. If you have a high speed tape array (multiple drives as a single device) you can try 256K. > TYPESIZE ? The capacity of your tape cartridge, etc. If you are archiving to disk and you do not have large file support in your filesystem use 2048000 (a bit less than 2GB), DATs hold from 1-4GB, DLT from 10-40GB depending on type (DLT4000 or DLT7000) and whether compression is used. If you are using a compressing tape device DO NOT use the full stated compressed capacity unless ALL of your data is text. The compression algorithm that the drives use does not compress binary data as well as it does ASCII text. Use 2/3 of compressed capacity. > LTAPEDEV ? > LTAPEBLK ? > LTAPESIZE ? Same as above, remember your Log Tape Device may be different from the Archive tape device. > Thanks > Gilad Finkelstein Email: finkelg@cpm.elex.co.il