PCNS between AD and Linux based LDAP

Is it possible to sync passwords between an AD domain and a Linux based LDAP?
All accounts in LDAP are present in AD. The initial flow would preferable be:
LDAP password -> AD
and from there on onwards, all password changes from AD should flow back to LDAP.
Thanks

Hi,
I would be interested to see if the password sync can happen or you may like to find one of the 3rd party tool which can do that, so far i know i never worked with password sync service between the two, you may like to read these articles:
http://technet.microsoft.com/en-us/magazine/2008.12.linux.aspx
http://www.chriscowley.me.uk/blog/2013/12/16/integrating-rhel-with-active-directory/
Best of luck, cheers
Thanks
Inderjit

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Using Oracle driver in JDBC for Unix and Linux based servers

Please, let me know how to mention the Oracle driver within the forName.class(" "); statement in the Jdbc-Servlet for Unix and Linux based servers.
I'm using Windows-OS for Java programming. Should I have to use the same environment(Unix/Linux with Oracle) for compiling or just compiling, mentioning the driver in the java program would suffice?
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from,
Silas eschole.
email: [email protected]
[email protected]

I've used Oracle's thin driver like this:
Class.forName ( "oracle.jdbc.driver.OracleDriver" );
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You need Oracles client classes ( e.g. classes111.zip ) at run time, not during compilation.
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Can anybody tell me the difference between elment and identity based version of the Object with any example? which classes implement them?

Hunky322 wrote:
At first it struck me as odd, given how List, Set, and Map define equals, but the part the OP left off clears it up a bit: "..because element-based equality is not always well-defined for queues with the same elements but different ordering properties."This lineSo, you're saying you don't understand the following?
>
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>
Okay, here's the deal.
For a List, equals() is true if both Lists contain the same objects and in the same order. That's pretty straightforward, and it makes sense.
For a Set, equals() is true if both Sets contain the same objects. Order is not considered because Sets are not generally ordered. Again, this it straightforward.
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Though I'm not newbie with computers, I'm really confused becouse I haven't set up network like this never before.
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I have a nice little program, developed on (the latest) JDK under windows which reads a custom file format, locates the second occurance of the substring 'PNG', ignores everything before the character before this PNG (hence the -1 below) and saves the remainder, which is now a bog-standard PNG image. The first 'PNG substring always occurs within the first 50 bytes (hence the 50 below) and the second around the 2kB mark. Here's the line that finds the location of the second 'PNG' in the file loaded into strFileContent:
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I'm suspecting Win and Linux Java count, perhaps, line endings or some such differently, perhaps have to check an encoding. I'd appreciate any pointers on correcting this to work on both platforms (ultimately I'm trying to appease a Mac user, but don't have a Mac to play with at the moment).
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Ken

phaethon2008 wrote:
I'm suspecting Win and Linux Java count, perhaps, line endings or some such differently, perhaps have to check an encoding. I'd appreciate any pointers on correcting this to work on both platforms (ultimately I'm trying to appease a Mac user, but don't have a Mac to play with at the moment).The immediate cause of your problem is probably that Windows uses a 8bit encoding as the default (probably some ISO-8859-{noformat}*{noformat} variant or the Windows-bastardization of it), while Ubuntu uses UTF-8, which has a varying number of bytes per character.
The much more important underlying problem is that you're trying to treat binary data as if it were text. A PNG image is not text. Handling binary data in Strings (or char[]) is a sure way to invite desaster.
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HI Prakash,
Though both of them eventually achieve the same function, that is giving access rights to the user for a certain period under monitring these differ based on the following:
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You create a separate user altogether and give the normal dialog user, the access to this user's authorization.
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Drives disappear between UEFI and Linux

This problem has me stumped for a month, so I'm hoping someone can shed some light on this.
Originally, I had an MSI motherboard with BIOS only, GRUB2 booting Arch and Windows 7, no problems whatsoever. I upgraded to an Asus motherboard with UEFI, and at first Arch booted fine (Windows just blue screened). Subsequent boots would randomly fail, sometimes telling me Arch couldn't find the root drive, sometimes the home drive, and other times it would boot successfully. There was no telling how many times I would need to reboot before Arch would find all the drives. I returned the Asus board and replaced it with a Gigabyte Z97-D3H, but the problem continued.
Finally this Tuesday I reinstalled Arch in UEFI mode, and instead of a bootloader, UEFI boots Linux directly, as shown in the "Using UEFI directly" section of EFISTUB. Still, Arch randomly fails to find my drives.
Here is my drive layout when Arch boots properly (when it doesn't, lsblk also can't see the missing drive):
┌── kiba ⟶ Paradise ~
└───── lsblk -o name,fstype,size,label,mountpoint
NAME FSTYPE SIZE LABEL MOUNTPOINT
sda 59.6G
├─sda1 vfat 512M SHAMAN /boot
├─sda2 ext4 51.1G Hige /
└─sda3 swap 8G swap [SWAP]
sdb 119.2G
└─sdb1 ext4 119.2G Kiba /home
sdc 465.8G
├─sdc1 ntfs 128G Tsume
└─sdc2 ext4 337.8G Toboe /home/kiba/Toboe
And /etc/fstab:
# <file system> <dir> <type> <options> <dump> <pass>
# /dev/sda2 UUID=67de5f82-861e-4934-94ba-9fdde2225bb1
LABEL=Hige / ext4 rw,noatime,discard,data=ordered 0 1
# /dev/sda1 UUID=6A35-D4DE
LABEL=SHAMAN /boot vfat rw,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro 0 2
# /dev/sdb1 UUID=c89186ab-c005-4598-a5b9-2be4d0d6202c
LABEL=Kiba /home ext4 rw,noatime,discard,data=ordered 0 2
# /dev/sda3 UUID=0ee5665b-13e3-4592-bdf1-5701636697f3
LABEL=swap none swap defaults 0 0
LABEL=Toboe /home/kiba/Toboe ext4 defaults 0 0

Oops, I forgot to mention that. As far as I can tell, the SMART status is fine on all the drives, but then I could be missing something.
Here's the output for the root drive:
┌── kiba ⟶ Paradise ~ 11:49:50
└───── s smartctl -t long /dev/sda && sleep 61 && s smartctl -a /dev/sda
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.18.6-1-ARCH] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Sending command: "Execute SMART Extended self-test routine immediately in off-line mode".
Drive command "Execute SMART Extended self-test routine immediately in off-line mode" successful.
Testing has begun.
Please wait 1 minutes for test to complete.
Test will complete after Sat Feb 14 11:52:27 2015
Use smartctl -X to abort test.
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.18.6-1-ARCH] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: JMicron based SSDs
Device Model: KINGSTON SV100S264G
Serial Number: 08AAA0003175
Firmware Version: D100811a
User Capacity: 64,023,257,088 bytes [64.0 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS (minor revision not indicated)
SATA Version is: SATA 2.6, 3.0 Gb/s
Local Time is: Sat Feb 14 11:52:28 2015 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled .
Self-test execution status: ( 0) The previous self-test routine complet ed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 30) seconds.
Offline data collection
capabilities: (0x1b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 1) minutes.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 050 Pre-fail Always - 0
2 Throughput_Performance 0x0005 100 100 050 Pre-fail Offline - 0
3 Unknown_Attribute 0x0007 100 100 050 Pre-fail Always - 0
5 Reallocated_Sector_Ct 0x0013 100 100 050 Pre-fail Always - 0
7 Unknown_Attribute 0x000b 100 100 050 Pre-fail Always - 0
8 Unknown_Attribute 0x0005 100 100 050 Pre-fail Offline - 0
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 13005
10 Unknown_Attribute 0x0013 100 100 050 Pre-fail Always - 0
12 Power_Cycle_Count 0x0012 100 100 000 Old_age Always - 3565
168 SATA_Phy_Error_Count 0x0012 100 100 000 Old_age Always - 15
175 Bad_Cluster_Table_Count 0x0003 100 100 010 Pre-fail Always - 0
192 Unexpect_Power_Loss_Ct 0x0012 100 100 000 Old_age Always - 0
194 Temperature_Celsius 0x0022 031 100 020 Old_age Always - 31 (Min/Max 23/40)
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
240 Unknown_Attribute 0x0013 100 100 050 Pre-fail Always - 0
170 Bad_Block_Count 0x0003 100 100 010 Pre-fail Always - 0 89 0
173 Erase_Count 0x0012 100 100 000 Old_age Always - 5 9441 7415
SMART Error Log Version: 1
ATA Error Count: 15 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 15 occurred at disk power-on lifetime: 12999 hours (541 days + 15 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 a0
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 a0 08 00:11:20.100 IDENTIFY DEVICE
b1 c1 00 00 00 00 00 ff 00:11:19.800 DEVICE CONFIGURATION FREEZE LOCK [OBS-ACS-3]
f5 00 00 00 00 00 00 ff 00:11:19.800 SECURITY FREEZE LOCK
ec 00 00 00 00 00 00 00 00:11:17.600 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:11:17.600 IDENTIFY DEVICE
Error 14 occurred at disk power-on lifetime: 12999 hours (541 days + 15 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 a0
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 a0 08 00:15:36.300 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:15:35.900 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:15:33.700 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:15:33.700 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:15:33.700 IDENTIFY DEVICE
Error 13 occurred at disk power-on lifetime: 12986 hours (541 days + 2 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 00 00 00:03:08.200 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:03:02.700 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:02:46.000 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:02:41.400 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:02:24.700 IDENTIFY DEVICE
Error 12 occurred at disk power-on lifetime: 12763 hours (531 days + 19 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 00 00 00:00:35.900 IDENTIFY DEVICE
00 00 00 00 00 00 00 ff 00:00:29.400 NOP [Abort queued commands]
00 00 00 00 00 00 00 ff 00:00:12.400 NOP [Abort queued commands]
00 00 00 00 00 00 00 ff 00:00:00.000 NOP [Abort queued commands]
Error 11 occurred at disk power-on lifetime: 12706 hours (529 days + 10 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 00 00 00:02:30.800 IDENTIFY DEVICE
e7 00 00 00 00 00 a0 ff 00:02:11.900 FLUSH CACHE
e7 00 00 00 00 00 a0 08 00:01:44.500 FLUSH CACHE
e7 00 00 00 00 00 a0 08 00:01:43.300 FLUSH CACHE
e7 00 00 00 00 00 a0 08 00:01:40.300 FLUSH CACHE
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 13005 -
# 2 Extended offline Completed without error 00% 13005 -
Selective Self-tests/Logging not supported
And for the home drive:
┌── kiba ⟶ Paradise ~ 11:52:28
└───── s smartctl -t long /dev/sdb && sleep 61 && s smartctl -a /dev/sdb
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.18.6-1-ARCH] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Sending command: "Execute SMART Extended self-test routine immediately in off-line mode".
Drive command "Execute SMART Extended self-test routine immediately in off-line mode" successful.
Testing has begun.
Please wait 1 minutes for test to complete.
Test will complete after Sat Feb 14 11:54:25 2015
Use smartctl -X to abort test.
smartctl 6.3 2014-07-26 r3976 [x86_64-linux-3.18.6-1-ARCH] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: JMicron based SSDs
Device Model: KINGSTON SV100S2128G
Serial Number: 08BB20039237
Firmware Version: D110225a
User Capacity: 128,035,676,160 bytes [128 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS (minor revision not indicated)
SATA Version is: SATA 2.6, 3.0 Gb/s
Local Time is: Sat Feb 14 11:54:26 2015 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 30) seconds.
Offline data collection
capabilities: (0x1b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 1) minutes.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 050 Pre-fail Always - 0
2 Throughput_Performance 0x0005 100 100 050 Pre-fail Offline - 0
3 Unknown_Attribute 0x0007 100 100 050 Pre-fail Always - 0
5 Reallocated_Sector_Ct 0x0013 100 100 050 Pre-fail Always - 0
7 Unknown_Attribute 0x000b 100 100 050 Pre-fail Always - 0
8 Unknown_Attribute 0x0005 100 100 050 Pre-fail Offline - 0
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 9899
10 Unknown_Attribute 0x0013 100 100 050 Pre-fail Always - 0
12 Power_Cycle_Count 0x0012 100 100 000 Old_age Always - 3541
168 SATA_Phy_Error_Count 0x0012 100 100 000 Old_age Always - 13
175 Bad_Cluster_Table_Count 0x0003 100 100 010 Pre-fail Always - 0
192 Unexpect_Power_Loss_Ct 0x0012 100 100 000 Old_age Always - 0
194 Temperature_Celsius 0x0022 034 100 020 Old_age Always - 34 (Min/Max 23/40)
197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0
240 Unknown_Attribute 0x0013 100 100 050 Pre-fail Always - 0
170 Bad_Block_Count 0x0003 100 100 010 Pre-fail Always - 0 135 0
173 Erase_Count 0x0012 100 100 000 Old_age Always - 2 16503 12094
SMART Error Log Version: 1
ATA Error Count: 37 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.
Error 37 occurred at disk power-on lifetime: 9893 hours (412 days + 5 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 a0
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 a0 08 00:00:09.200 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:00:08.800 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:00:08.800 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:00:06.600 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:00:06.600 IDENTIFY DEVICE
Error 36 occurred at disk power-on lifetime: 9880 hours (411 days + 16 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 00 00 00:09:55.000 IDENTIFY DEVICE
ec 00 00 00 00 00 a0 ff 00:09:48.800 IDENTIFY DEVICE
e7 00 00 00 00 00 a0 08 00:09:47.900 FLUSH CACHE
ec 00 01 00 00 00 00 08 00:04:00.000 IDENTIFY DEVICE
ec 00 01 00 00 00 00 08 00:03:56.100 IDENTIFY DEVICE
Error 35 occurred at disk power-on lifetime: 9855 hours (410 days + 15 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 00 00 00:03:35.400 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:03:29.200 IDENTIFY DEVICE
ec 00 00 00 00 00 00 ff 00:03:24.600 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:01:00.000 IDENTIFY DEVICE
ec 00 00 00 00 00 00 00 00:01:00.000 IDENTIFY DEVICE
Error 34 occurred at disk power-on lifetime: 9168 hours (382 days + 0 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 00 00 00:00:21.800 IDENTIFY DEVICE
00 00 00 00 00 00 00 ff 00:00:21.800 NOP [Abort queued commands]
00 00 00 00 00 00 00 ff 00:00:00.000 NOP [Abort queued commands]
Error 33 occurred at disk power-on lifetime: 9165 hours (381 days + 21 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER ST SC SN CL CH DH
84 51 00 00 00 00 a0
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
ec 00 00 00 00 00 a0 00 00:18:36.900 IDENTIFY DEVICE
a1 00 00 00 00 00 a0 00 00:18:36.900 IDENTIFY PACKET DEVICE
ec 00 00 00 00 00 a0 ff 00:18:36.900 IDENTIFY DEVICE
ec 00 00 00 00 00 a0 ff 00:18:00.100 IDENTIFY DEVICE
ec 00 00 00 00 00 a0 ff 00:17:49.100 IDENTIFY DEVICE
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 9899 -
# 2 Extended offline Completed without error 00% 9894 -
Selective Self-tests/Logging not supported
They are both SSD's, while the extra drive is a HDD. I don't think I've ever had an issue with the HDD showing up, so maybe this is an SSD-specific problem?

OMQ between OpenVMS and Linux

Are there any issues with having communications between OMQ running on OpenVMS and OMQ running on Linux? Is there any documentation on this product for both OS's that I can download and review?
Thanks

We have been successfully using OMQ between Alphas running OpenVMS 7.3-2 and Redhat Linux using v5 of OMQ for several years now. You should be able to use the manuals for Unix to set it up on Linux. As long as you have the initialization files configured on both systems to recognize each other there shouldn't be anything unusual as compared to communicating between 2 OpenVMS nodes.

Can you share an external disk between OSX and Linux?

I am using both Linux and Mac OS X computers at work. I have found a need in some cases for backing up very large files and/or moving them between systems that are not necessarily on a saf network. At least not at the same time.
For this purpose I wanted an external big disk that could be mounted on a Linux system as well as a Mac. To my dismay there seem to be no common modern journalling file system between these two, well dialects of, unix.
I am not going to use and old Windows file system such as FAT32 and the only possibility so far has been Apple's HFS+ with the journal turned off (as Linux does not support writing to a journalled HFS+ file system). Darwin does not support any of the file systems that I regularly use on Linux.
Perhaps I am mistaken - is there really nothing good and useful out there?
/T

I was under the impression that having a journal would be safer, not just for the boot drive. Any volume that is not properly unmounted before removed (or the couputer is turned off) might be left in an incomplete save state, since data might have been saved to buffers only, not to the disk proper.
To me safer would be better. Apple has added journaling to HFS+ which is good, and there are several journaling file systems for Linux. Nothing in common. Not even with Windows. I guess I will have to use HFS+ with the journal turned off, but it seems suboptimal to me.
/T

Dataguard 11g setup between AIX and Linux

Hi,
We are planning to move our Oracle databases from AIX 6.1 to Oracle Linux 6.2
To reduce the downtime, we are thinking of setting up a dataguard (physical or logical) and do the switchover.
Have you performed this before?
Will you pls send me the steps?
Thanks,
DR

Hello again;
I thinking no for the same reason.
When my shop moved from AIX to Linux we just install Oracle on Linux and patched it to the same level as the AIX. We created users, tablespaces, job etc in advance and then just used import/export to move the needed schema's. Data Pump make this much easier.
Do a schema(s) compare and switch when ready. But in any event I don't believe Data Guard can help you. You mostly have a migrate issue.
Please consider closing your question when complete.
h3. Oracle Database 10g & Multi-Terabyte Database Migration
http://www.oracle.com/technetwork/database/features/availability/thehartfordprofile-xtts-133180.pdf
h3. Incrementally Updating Transportable Tablespaces using RMAN
http://www.oracle.com/technetwork/database/features/availability/itts-130873.pdf
h3. Platform Migration Using Transportable Database Oracle Database 11g and 10g Release 2
http://www.oracle.com/technetwork/database/features/availability/maa-wp-10gr2-platformmigrationtdb-131164.pdf
Best Regards
mseberg
Edited by: mseberg on Nov 13, 2012 6:31 PM

Connection between AIX and NT based Oracle

Hi There,
I am encountering the following errors while connecting between two Oracle 8.1.5 databases i.e AIX to Windows NT 4 service pack 4 (Note. Windows NT has got Personal Oracle 8.1.5) :
1. TNS-3505 error is coming while try to connect from AIX to NT.
2. ORA-12514 and ORA-12154 while trying to connect from NT to AIX. Mind it, setting up the TNSNAMES on NT didnt give any problem.
Is there any one out there to help me out.
Thanks in Advance
KVS

You can make ODBC calls directly in C or you can use a variety of higher-level API's (RDO, DAO, ADO, etc.).
Justin

DBLoad utility: (huge) difference between Windows and Linux

Hello
I have a backfile of 55M entries to load. I have prepared it under Linux (Dual Core machine + 4GB - Mandriva distribution - java 1.6). When I run DbLoad, here is the (partial) log:
java -Xmx2048m -jar /home/pd51444/jNplMatchBackfile_Main_0.2/lib/je-3.3.69.jar DbLoad -h . -s group.db -f group.db.txt -v
loaded 2817812 records 63275 ms - % completed: 5
loaded 5624893 records 141023 ms - % completed: 10
loaded 8462602 records 962019 ms - % completed: 15
loaded 11285385 records 2401566 ms - % completed: 20
loaded 14094928 records 786746 ms - % completed: 25
loaded 16914275 records 8965457 ms - % completed: 30
loaded 19741557 records 15766560 ms - % completed: 35
loaded 22567310 records 2226015 ms - % completed: 40
loaded 25376363 records 19662455 ms - % completed: 45
Then I copied the exact same file on my Windows laptop (dual core + 2GB - XP - java 1.6), and DbLoad goes much faster:
C:\nplmatch\db>java -Xmx1024m -jar ..\jar\je-3.3.69.jar DbLoad -h . -s group.db -f group.db.txt -v
Load start: Thu Oct 02 10:33:23 CEST 2008
loaded 2817812 records 59876 ms - % completed: 5
loaded 5624893 records 69283 ms - % completed: 10
loaded 8462602 records 77470 ms - % completed: 15
loaded 11285385 records 69688 ms - % completed: 20
loaded 14094928 records 62716 ms - % completed: 25
loaded 16914275 records 59122 ms - % completed: 30
loaded 19741557 records 63200 ms - % completed: 35
loaded 22567310 records 58654 ms - % completed: 40
loaded 25376363 records 61482 ms - % completed: 45
loaded 28197663 records 58889 ms - % completed: 50
loaded 31019453 records 55937 ms - % completed: 55
loaded 33839878 records 62045 ms - % completed: 60
loaded 36664839 records 65749 ms - % completed: 65
loaded 39498035 records 100718 ms - % completed: 70
loaded 42302599 records 99733 ms - % completed: 75
loaded 45125268 records 96000 ms - % completed: 80
loaded 47947180 records 92749 ms - % completed: 85
loaded 50755655 records 85485 ms - % completed: 90
loaded 53578015 records 96240 ms - % completed: 95
Load end: Thu Oct 02 10:57:36 CEST 2008
Also I use the same je.properties file on both platforms.
Any idea where this performance problem comes from?
Thanks in advance
Best regards
Philippe

Hello Phillipe,
Nothing jumps out at me, but you might try the following:
. Check the status of disk write caches. On linux, the cache may be disabled and it may be enabled on windows.
. Does the windows machine have an SSD?
. Run with -verbose:gc to see if the Linux is being held up by full GC's.
. Use top or some other utility to see if something else is running on the linux box.
. Take some random c-\'s to get some stack traces to see what is going on when things get slow.
. Check on the JVM ergonomics. You may be getting a server or client JVM without knowing. Force it one way or the other with -server or -client.
Here is a (future) FAQ entry regarding disk write caches (poorly formatted at the moment):
During my system testing I pulled the power cord on my server to make the ultimate test of JE's durability claims. I am using commitSync() for my transactions, but some of the data that JE said it had committeed was not on disk when the system came back up. What gives?
Quoting the Berkeley DB Reference Guide:
Many disk drives contain onboard caches. Some of these
drives include battery-backup or other functionality that guarantees that all
cached data will be completely written if the power fails. These drives can
offer substantial performance improvements over drives without caching support.
However, some caching drives rely on capacitors or other mechanisms that
guarantee only that the write of the current sector will complete. These
drives can endanger your database and potentially cause corruption of your
data.
To avoid losing your data, make sure the caching on your disk
drives is properly configured so the drive will never report that data has
been written unless the data is guaranteed to be written in the face of a
power failure. Many times, this means that write-caching on the disk drive
must be disabled.
Some operating systems enable the disk write cache by default.
If you need true durability in the face of a power failure, then you should
verify that the disk write cache is disabled or that you have some alternative
means of ensuring durability (e.g. nvram, battery backup, an Uninterruptible
Power Supply (UPS), Solid State Disk (SSD), etc.) Some disk drives may
actually require changing hardware jumpers to enable/disable the write cache.
You can check the status of the write cache using the
hdparm utility on Linux and the format utility on Solaris.
On Windows, use the Windows Explorer. Right click on
the disk drive that you want to check, select Properties,
click on the Hardware tab, select the desired disk, click
on the Properties button, click on
Policies and verify the cache setting with the check box.
On Windows Server 2003 you generally disable the write caching
from within the RAID controller software (OEM specific).

PCNS between AD and Linux based LDAP

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