OWB Mappings write data extremely sparse

We discovered that some tables, which get some new records by several OWB Mappings every night, are filled extremely sparse. In most blocks we find only one record even if the average record size is some 60 bytes and the blocksize is 8k. Only in a few blocks there are up to 18 records and every night nearly the same - but not exactly the same - mappings write their data in one block together, while all other mappings use a separate block. When we move all records to a temporary table, truncate the original table and move all records back, every block is filled with 110 to 120 records but in the next night the new records are sparse again.
I moved the problematical tables from an ASSM managed tablespace to a manually managed tablespace and increased the number of freelists to 2 but this made no difference in the behavior. Is there any explanation for this conduct of the database? Is there a known bug in 10.2.0.3 (it’s not up to date, I know) which leads to this result?

As the problem still exited after changing to database version 11.2.0.3 I opened a new thread for this topic: Empty blocks are not used for inserts
It seems that the problem occured, because OWB uses the APPEND hint by default for mappings, which is inadequate when only single rows are written to a log table.

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    Apr 4 16:46:12 localhost hp[11104]: io/hpmud/musb.c 1420: unable to write data hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324: 45 seco
    nd io timeout
    Apr 4 16:46:57 localhost hp[11104]: io/hpmud/musb.c 1420: unable to write data hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324: 45 seco
    nd io timeout
    Apr 4 16:47:42 localhost hp[11104]: io/hpmud/musb.c 1420: unable to write data hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324: 45 seco
    nd io timeout
    Apr 4 16:48:27 localhost hp[11104]: io/hpmud/musb.c 1420: unable to write data hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324: 45 seco
    nd io timeout
    The last type of message fills a good many more lines. Some of the non-finding-device errors earlier are from me connecting and disconnecting the printer etc. I think. i.e. they are not why it isn't working.
    From user.log:
    Apr 4 14:23:58 localhost mtp-probe: checking bus 2, device 8: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1"
    Apr 4 14:23:58 localhost mtp-probe: bus: 2, device: 8 was not an MTP device
    Apr 4 15:27:18 localhost mtp-probe: checking bus 2, device 4: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1"
    Apr 4 15:27:18 localhost mtp-probe: bus: 2, device: 4 was not an MTP device
    Apr 4 16:36:01 localhost mtp-probe: checking bus 1, device 4: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
    Apr 4 16:36:01 localhost mtp-probe: bus: 1, device: 4 was not an MTP device
    Apr 4 16:36:01 localhost logger: loading hp_printer_device 001 004
    Apr 4 16:36:02 localhost hp-mkuri: io/hpmud/model.c 625: unable to find [s{product}] support-type in /usr/share/hplip/data/models/models.dat
    Apr 4 16:36:05 localhost hp-check-plugin: [8068]: error: hp-systray must be running.
    Run 'hp-systray &' in a terminal.
    Apr 4 16:36:05 localhost hp-check-plugin: [8068]: error: Run hp-systray manually and re-plugin printer
    Apr 4 16:41:23 localhost mtp-probe: checking bus 1, device 5: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
    Apr 4 16:41:23 localhost mtp-probe: bus: 1, device: 5 was not an MTP device
    Apr 4 16:41:24 localhost logger: loading hp_printer_device 001 005
    Apr 4 16:41:24 localhost hp-mkuri: io/hpmud/model.c 625: unable to find [s{product}] support-type in /usr/share/hplip/data/models/models.dat
    Apr 4 16:41:24 localhost hp-check-plugin: [10933]: error: hp-systray must be running.
    Run 'hp-systray &' in a terminal.
    Apr 4 16:41:24 localhost hp-check-plugin: [10933]: error: Run hp-systray manually and re-plugin printer
    Apr 4 16:42:52 localhost mtp-probe: checking bus 1, device 6: "/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1"
    Apr 4 16:42:52 localhost mtp-probe: bus: 1, device: 6 was not an MTP device
    Apr 4 16:42:52 localhost logger: loading hp_printer_device 001 006
    Apr 4 16:42:52 localhost hp-mkuri: io/hpmud/model.c 625: unable to find [s{product}] support-type in /usr/share/hplip/data/models/models.dat
    Apr 4 16:42:52 localhost hp-check-plugin: [11017]: error: hp-systray must be running.
    Run 'hp-systray &' in a terminal.
    Apr 4 16:42:52 localhost hp-check-plugin: [11017]: error: Run hp-systray manually and re-plugin printer
    I'm a bit confused by this. I don't usually use hp-systray (that I know of). That's the great thing about this printer - I just configured it all through the cups web interface with no need to use hp's printer setup tools or  to install any plugin - it didn't need one. But hp/hplip_ac.log says:
    [11017]: info: :hp-systray is not running.
    error: hp-systray must be running.
    Run 'hp-systray &' in a terminal.
    [11017]: info: :Device Plugin is not found
    error: Run hp-systray manually and re-plugin printer
    [11017]: info: :
    [11017]: info: :Done.
    And lpr.log:
    Apr 4 16:36:02 localhost udev-configure-printer: add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0
    Apr 4 16:36:02 localhost udev-configure-printer: device devpath is /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1
    Apr 4 16:36:02 localhost udev-configure-printer: Device vendor/product is 03F0:1D17
    Apr 4 16:36:02 localhost udev-configure-printer: MFG:Hewlett-Packard MDL:hp LaserJet 1320 series SERN:- serial:00CNM1J04324
    Apr 4 16:36:05 localhost udev-configure-printer: SERN field matches USB serial number
    Apr 4 16:36:05 localhost udev-configure-printer: URI match: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI contains USB serial number
    Apr 4 16:36:05 localhost udev-configure-printer: URI match: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of print queue: cups-pdf:/, normalized: cups pdf
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of print queue: dnssd://Dell%202330dn%20CFR._printer._tcp.local/, normalized: dnssd dell 2330dn cfr printer tcp local
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of print queue: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 16:36:05 localhost udev-configure-printer: Re-enabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 16:36:05 localhost udev-configure-printer: Re-enabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series
    Apr 4 16:36:05 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3005?serial=CNFW6D5578, normalized: laserjet p3005 serial cnfw6d5578
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3010_Series?serial=VNBQC2323J, normalized: laserjet p3010 series serial vnbqc2323j
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:36:05 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: remove /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1
    Apr 4 16:41:14 localhost udev-configure-printer: URI of print queue: cups-pdf:/, normalized: cups pdf
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of print queue: dnssd://Dell%202330dn%20CFR._printer._tcp.local/, normalized: dnssd dell 2330dn cfr printer tcp local
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of print queue: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 16:41:14 localhost udev-configure-printer: Disabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series as the corresponding device was unplugged or turned off
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 16:41:14 localhost udev-configure-printer: Disabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series as the corresponding device was unplugged or turned off
    Apr 4 16:41:14 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3005?serial=CNFW6D5578, normalized: laserjet p3005 serial cnfw6d5578
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3010_Series?serial=VNBQC2323J, normalized: laserjet p3010 series serial vnbqc2323j
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:14 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:41:24 localhost udev-configure-printer: add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0
    Apr 4 16:41:24 localhost udev-configure-printer: device devpath is /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1
    Apr 4 16:41:24 localhost udev-configure-printer: Device vendor/product is 03F0:1D17
    Apr 4 16:41:24 localhost udev-configure-printer: MFG:Hewlett-Packard MDL:hp LaserJet 1320 series SERN:- serial:00CNM1J04324
    Apr 4 16:41:27 localhost udev-configure-printer: no corresponding CUPS device found
    Apr 4 16:41:38 localhost udev-configure-printer: remove /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1
    Apr 4 16:42:52 localhost udev-configure-printer: add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1/1-1.1:1.0
    Apr 4 16:42:52 localhost udev-configure-printer: device devpath is /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1
    Apr 4 16:42:52 localhost udev-configure-printer: Device vendor/product is 03F0:1D17
    Apr 4 16:42:52 localhost udev-configure-printer: MFG:Hewlett-Packard MDL:hp LaserJet 1320 series SERN:- serial:00CNM1J04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI contains USB serial number
    Apr 4 16:42:53 localhost udev-configure-printer: URI match: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324
    Apr 4 16:42:53 localhost udev-configure-printer: SERN field matches USB serial number
    Apr 4 16:42:53 localhost udev-configure-printer: URI match: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of print queue: cups-pdf:/, normalized: cups pdf
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of print queue: dnssd://Dell%202330dn%20CFR._printer._tcp.local/, normalized: dnssd dell 2330dn cfr printer tcp local
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of print queue: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 16:42:53 localhost udev-configure-printer: Re-enabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 16:42:53 localhost udev-configure-printer: Re-enabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series
    Apr 4 16:42:53 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3005?serial=CNFW6D5578, normalized: laserjet p3005 serial cnfw6d5578
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3010_Series?serial=VNBQC2323J, normalized: laserjet p3010 series serial vnbqc2323j
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 16:42:53 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: remove /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.1
    Apr 4 20:16:17 localhost udev-configure-printer: URI of print queue: cups-pdf:/, normalized: cups pdf
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of print queue: dnssd://Dell%202330dn%20CFR._printer._tcp.local/, normalized: dnssd dell 2330dn cfr printer tcp local
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of print queue: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 20:16:17 localhost udev-configure-printer: Disabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series as the corresponding device was unplugged or turned off
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: Queue ipp://localhost:631/printers/hp-LaserJet-1320-series has matching device URI
    Apr 4 20:16:17 localhost udev-configure-printer: Disabled printer ipp://localhost:631/printers/hp-LaserJet-1320-series as the corresponding device was unplugged or turned off
    Apr 4 20:16:17 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3005?serial=CNFW6D5578, normalized: laserjet p3005 serial cnfw6d5578
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of print queue: hp:/usb/HP_LaserJet_P3010_Series?serial=VNBQC2323J, normalized: laserjet p3010 series serial vnbqc2323j
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: usb://HP/LaserJet%201320%20series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Apr 4 20:16:17 localhost udev-configure-printer: URI of detected printer: hp:/usb/hp_LaserJet_1320_series?serial=00CNM1J04324, normalized: laserjet 1320 series serial 00cnm1j04324
    Could anyone advise me? I tried searching the forums but although I can find posts on issues similar to other printing problems I've had, I can't find any which look quite like this.

    I've figured out that this is happening only with certain pdf documents but I'm not sure why. (None contain pictures or diagrams or anything like that.)
    Printing a different pdf today, the behaviour is still very strange, though. Basically, I printed a 120 page pdf. Initially, it printed a bit. As far as the computer was concerned, the job was successfully completed. The printer flashed its lights. I pressed a button and it completed the first 56 pages. I then sent 57-120 to the printer. Again, it printed 57-something and then, again, nothing. Job done as far as the computer was concerned. Flashing lights on the printer. In the end, it took 4 or 5 jobs to finish the document.
    What's odd about this is that I usually have no problems at all with this printer and this isn't the first time I've sent it a large document.
    It is almost as though the computer sends stuff too fast or something for the printer or sends more than the printer can cope with at once. So when it has finished that bit, it waits for the next bit but the computer thinks it has sent the lot and no more is sent. I don't know if that is possible but that's what it "looks" like!

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    I wrote a code that contineously writes data to  a text file. The problem is I am running this VI for long time and therefore this text file is being bigger in size e.g. more than 10MB. I want to split writing data in this text file after max 1MB size. Can anyone help ????
    thanks in advance.

    CMW.. wrote:
    You could use the "File/Directory Info Function" in the Advanced File VIs and Function palette to check the size. If the file is too big. close it and create a new one.
    I would use the Get File Position since this won't cause Windows to have to do so much.  Assuming you are just writing and not setting the file position manually, this will return the size of the file in bytes (file position will always be at the end of the file).
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  • How to write data into a file

    Hi
    I want to write data from a string into a file. I am created a directory and a .doc file . But when i write this data from a string into .doc file , its give an error : File not found exception
    But, when i check in my directory, a file is created with blank.
    My code is:
    import java.io.*;
    import java.util.*;
    import java.lang.*;
    class createFile {
         public static void main(String[] args) {
    try {
         String mss = "This is for dedo";
         FileInputStream fis;
         FileOutputStream fos;
    File file = new File("C:\\JD\\m4.rtf");
    // Create file if it does not exist
    boolean success = file.createNewFile();
         success = true;
    if (success) {
                   System.out.println("suc");     
                   fis = new FileInputStream(mss);
                   System.out.println(fis);
              fos = new FileOutputStream(file);
              int c;
                   while ((c = fis.read()) != -1) {
         fos.write(c);
                   System.out.println("mss");
              fis.close();
              fos.close();
         System.out.println("created");
    // File did not exist and was created
    } else {
    // File already exists
    } catch (IOException e) {
         System.out.println(e);
    regards
    madhu

    InputStream inputStream = new ByteArrayInputStream(mss.getBytes());Use this to push into the file>
    Ummm.... no. InputStreams are for reading, not for writing.
    Anyway, OP, you're making a mistake. You're trying to open a stream to a file called "This is for dedo". Use FileOutputStream(File file) constructor or FileOutputStream(String pathToFile). You can then wrap that stream with a PrintWriter or whatever you need.

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