Postgres vFabric requirements

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• readers fill on vFabric 9.2.4 virtual appliance

  We have 2 vFabric Postgres 9.2.4 virtual appliances running like a bunch of slave master to provide a database of space Horizon.

  The size of database of horizon is reported to 34 MB on the master server filled readers (taking the database offline) at the following locations:

  / dev/sdb 7.8 GB (/var/vmware/vpostgres/9.2/pgdata/archive is full file 16 MB)

  / dev/sde 1.9 GB (/var/vmware/vpostgres/9.2-archive is full file 16 MB)

  show_replication_status script gives the following on the master server:

  sync_priority |          slave | sync_state | log_receive_position | log_replay_position | receive_delta | replay_delta

  ---------------+--------------------------+------------+----------------------+---------------------+---------------+--------------

  0 | gr2cmnxvfpv02. CMN.net | Async | 2/48696CB8 | 2/48696AB0 |             0 |          520 (1 row)

  What is causing the 2 drives fills up so quickly? And how we can solve.

  

  Just a bit of background here...

  In your case, if you have a 7.8 GB of files in pg_xlog, this means that there is something like 480 WAL files saved in it. There may be more of (3 * checkpoint_segments + 1) files in pg_xlog (or 901 knowing that checkpoint_segments has a maximum of 300). Note that this is a soft limit and can be exceeded, but the WAL files will be deleted when this soft threshold is reached. Below this limit, when the WAL files are not needed, they are recycled by the system be renamed.

  VMware vFabric Postgres 9.2 differs also, a little Vanilla because it uses an algorithm called dynamic control point which allows to delay or speed up the time of a control point is kicked according to the workload of the server is facing, this is slightly different from vanilla Postgres... In this case the control point is controlled with checkpoint_segments_max and there may be more of (checkpoint_segments_max * 3) + 1 WAL files.

  More reference on the number of WAL files to vanilla 9.2 here:

  PostgreSQL: Documentation: 9.2: Configuration WAL

  So, to answer your questions:

  > So is there no way to manually clean up the files on the data disk?

  You should not remove files your server WAL because this would result in a corrupt system, you might need those WAL files in the case of a server crash for redo operations. So rely on the system for their elimination.

  You could accelerate that by kicking CHECKPOINT manually, just be aware that this operation is very expensive in terms of input/output. You can thus reduce checkpoint_segments_max manually in postgresql.conf, which by default is 300.

  > Are they just continue to grow like this for always?

  No unnecessary WAL files are recycled or eliminated by the system.

  > Why are there so many files for such a small base?

  These files are required to roll FORWARD operations. As far as I can see on your screen, all WAL files have the same timestamp, so don't you have an operation that could generate a lot of WAL, as for example that would make a huge bulk loading of the INSERT? That would explain why you have generated a lot of files without a checkpoint being hit by checkpoint_timeout.

• ORACLE to POSTGRES db link does not

  cat /home/oracle/temp/psqlodbc-09.02.0100/test/odbc.ini

  [postgresql]

  Description = psqlodbc DSN regression test

  Driver = /home/oracle/temp/psqlodbc-09.02.0100/.libs/psqlodbcw.so

  Trace = Yes

  Trace file = /home/oracle/tmp/sql.log

  Database = postgresdb

  ServerName = postgresdev.office.corp

  Username = postgres

  Password = *.

  Port = 5432

  Protocol = 6.4

  ReadOnly = No

  RowVersioning = No

  ShowSystemTable = No

  ShowOidColumn = No

  FakeOidIndex = No

  ConnSettings =

  cat /home/oracle/temp/psqlodbc-09.02.0100/test/odbcinst.ini

  [psqlodbc]

  Description = driver ODBC PostgreSQL (Unicode version), for regression tests

  Driver =... /.libs/psqlodbcw.so

  Debug = 0

  CommLog = 1

  Cat /oracle/database/11.2.0.3/hs/admin/initdg4odbc.ora

  # This is an example of initialization file of the agent that contains the HS settings

  # necessary for the database to ODBC gateway

  #

  # HS init parameters

  #

  HS_FDS_CONNECT_INFO = postgresql

  HS_FDS_TRACE_LEVEL = off

  HS_FDS_SHAREABLE_NAME = /usr/lib/libodbc.so

  #

  # ODBC specific environment variables

  #

  Set ODBCINI=/home/oracle/temp/psqlodbc-09.02.0100/test/odbc.ini

  Set odbcinst=/home/oracle/temp/psqlodbc-09.02.0100/test/odbcinst.ini

  Cat /oracle/database/11.2.0.3/network/admin/listener.ora

  LISTENER_POSTGRES =

  (DESCRIPTION_LIST =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP (PORT = 1524))(HOST = scfsdb.office.corp))

  )

  )

  SID_LIST_LISTENER_POSTGRES =

  (SID_LIST =

  (SID_DESC =

  (SID_NAME = postgresql)

  (ORACLE_HOME = oracle/database/11.2.0.3)

  (PROGRAM = hsodbc)

  (ENVS = "LD_LIBRARY_PATH=/oracle/database/11.2.0.3/lib:/oracle/database/11.2.0.3/hs/lib:/usr/lib")

  )

  (SID_DESC =

  (SID_NAME = postgresql)

  (ORACLE_HOME = oracle/database/11.2.0.3)

  (PROGRAM = hsodbc)

  )

  )

  #ADR_BASE_LISTENER_POSTGRES = / oracle/database

  LOGGING_LISTENER_POSTGRES = OFF

  Cat /oracle/database/11.2.0.3/network/admin/tnsnames.ora

  PostgreSQL =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP (PORT = 1524))(HOST = xxx.xx.x.xx))

  (CONNECT_DATA =

  (SID = postgresql)

  )(HS = OK)

  )

  This does not work, pourriez please let me know where I should make the change. Thank you very much for your help in advance... !!! Guru, please answer on that.

  Depending on your configuration the Manager unixODBC library has been installed in lib64 - see the location of the file libodbc.so. I guess you used a package to install the driver manager to verify the details of the package where it could have placed all other required files libs/source.

• Insertion in Postgres via ODBC gateway

  Hi, I did a few tests, here are the questions and results:
  
  Postgres:

  CREATE TABLE t_dump
  (
    str character varying(100)
  )

  Oracle: [ORADB: db link to Postgrers]
  

  INSERT INTO "t_dump"@ORADB VALUES ('test'); 

  Works very well, both from PL/SQL SQL
  
  However:

  Declare
  m_str Varchar2 (10) := 'test';
  Begin
  INSERT INTO "t_dump"@ORADB VALUES (m_str);  
  End;

  Gives me an error:

  Error report:
  ORA-00604: error occurred at recursive SQL level 1
  ORA-02067: transaction or savepoint rollback required
  ORA-28511: lost RPC connection to heterogeneous remote agent using SID=ORA-28511: lost RPC connection to heterogeneous remote agent using SID=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=DB)(PORT=1521))(CONNECT_DATA=(SID=pg)))
  ORA-02055: distributed update operation failed; rollback required
  ORA-02063: preceding lines from ORADB
  ORA-06512: at line 8
  00604. 00000 -  "error occurred at recursive SQL level %s"
  *Cause:    An error occurred while processing a recursive SQL statement
             (a statement applying to internal dictionary tables).
  *Action:   If the situation described in the next error on the stack
             can be corrected, do so; otherwise contact Oracle Support.

  Dynamic SQL gives the exact same error:

  Declare
  m_str Varchar2 (10) := 'test';
  Begin
  EXECUTE IMMEDIATE
  'INSERT INTO "t_dump"@ORADB VALUES (:v0)'
    Using m_str;
  End;

  Is it possible that I could use variables in queries?
  
  An issiue more:
  I created a table partitioned in Postgres and simple INSERT statement works well [SQL Oracle's]; However - the same statement, accompanied by start/end [PL/SQL] needs about 60 seconds to complete. Is this a normal behavior? Y at - it a config/pragma... I use to speed it up?
  
  Concerning
  Bart Dabr

  is the full path or you cut a few lines at the end?

  When you look at the link I see a column is bound without precision (LONGVARCHAR-1 Y 0 0 0 / 0 0 0 220 stringvalue)-this also happens when using the insert without a variable binding?

  Published by: kgronau on October 5, 2011 09:09

  I've created a demo table in a Postgres database:
  CREATE TABLE information_schema. "" VarBin ".
  (
  whole col1,
  col2 character varying (100)
  )
  WITHOUT OIDS;

  And my gateway to help insert links works:
  SQL > declare
  Number of m_nmbr (10): = 1;
  m_str Varchar2 (10): = 'test ';
  Begin
  INSERT INTO 'information_schema '. "VarBin"@postgres_dg4dd61_emgtw_1123_db (m_nmbr, m_str) values;
  End;
  / 2 3 4 5 6 7

  PL/SQL procedure successfully completed.

  SQL > select * from 'information_schema '. "VarBin"@postgres_dg4dd61_emgtw_1123_db;

  col1 col2
  ----------------------------- ---------------------------------------------------
  1 test

  What the version of the ODBC driver you are using and do the test using my script works for you?

• Heterogeneous connection between Oracle and Postgres.

  Hi all
  
  I am trying to connect heterogeneous Postgres and Oracle for a few days, but I've always seen this error: "loss of the RPC connection.
  
  First of all: I use Windows 7, Oracle 10 g and PostgreSQL 8.4.
  
  I did the following:
  
  (1) create a system DNS named "PG". (The connection test is OK)
  
  (2) to create the file 'initPG.ora' in ' $ORACLE_HOME/hs/admin:
  # This is an example of initialization file of the agent that contains the HS settings
  # needed for an ODBC Agent.
  
  #
  # HS init parameters
  #
  HS_FDS_CONNECT_INFO = PG
  HS_FDS_TRACE_LEVEL = WE
  
  #
  # Required for the non-Oracle system environment variables
  #
  #set < varenv > = < value >
  
  (3) configure the file 'listener.ora' (in ' $ORACLE_HOME/NETWORK/ADMIN "):
  SID_LIST_LISTENER =
  (SID_LIST =
  (SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
  (= Extproc PROGRAM)
  )
  (SID_DESC =
  (SID_NAME = CLRExtProc)
  (ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
  (= Extproc PROGRAM)
  )
  (SID_DESC =
  (SID_NAME = PG)
  (ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
  (PROGRAM = hsodbc)
  )
  )
  
  LISTENER =
  (DESCRIPTION_LIST =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC_FOR_XE))
  (ADDRESS = (PROTOCOL = TCP) (HOST = Cédric-PC)(PORT = 1521))
  )
  )
  
  DEFAULT_SERVICE_LISTENER = (XE)
  
  (4) set up the 'tnsnames.ora' file (in ' $ORACLE_HOME/NETWORK/ADMIN "):
  XE =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP) (HOST = Cédric-PC)(PORT = 1521))
  (CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = XE)
  )
  )
  PG =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = tcp) (HOST = Cédric-PC)(PORT = 1521))
  (CONNECT_DATA =
  (SERVICE_NAME = PG)
  (HS = OK)
  )
  )
  
  EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
  (ADDRESS_LIST =
  (ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC_FOR_XE))
  )
  (CONNECT_DATA =
  (SID = PLSExtProc)
  (PRESENTATION = RO)
  )
  )
  
  ORACLR_CONNECTION_DATA =
  (DESCRIPTION =
  (ADDRESS_LIST =
  (ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC_FOR_XE))
  )
  (CONNECT_DATA =
  (SID = CLRExtProc)
  (PRESENTATION = RO)
  )
  )
  
  (5) Finally, I create my DB-Link and test it:
  CREATE DATABASE LINK 'CENTRALE_POSTGRES' CONNECT TO 'user_login' IDENTIFIED BY 'user_password' USING "PG";
  
  SELECT * FROM 'dual"@CENTRALE_POSTGRES;
  
  I got this error:
  ORA-03135: interruption of the RPC connection.
  
  As you can see, I have activated the trace level (HS_FDS_TRACE_LEVEL = WE), but the still empty directory ' $ORACLE_HOME/NETWORK/trace.
  
  Any ideas?
  
  Concerning

  the alias PG tnsnames.ora is wrong — you must have 2 closing brackets after the so that HS SERVICE_NAME = OK is outside the CONNECT_DATA as:

  PG =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = tcp) (HOST = Cédric-PC)(PORT = 1521))
  (CONNECT_DATA =
  (SERVICE_NAME = PG))
  (HS = OK)
  )

  You should know also HSODBC to release 10.2 was desupported since March 2008 and it was replaced by its product follow-up DG4ODBC V11

• Mail (version 9.3) frequently freezes, requires a reboot.

  Mail under El Capitan (10.11.6) freezes frequently. Rebuild my Inbox, sent messages, Junk, etc was not rectified the problem. Seems arbitrary? Anyone else having this problem? All possible solutions to this?

  Make a backup, preferably 2 on 2 separate drives.

  Exit the Mail.

  Go to Finder and select your user folder. With this Finder window as the windshield, select Finder/display/display options for presenting or order - J.  When the display options opens, check "show the library folder. This should make your visible user library folder in your user folder. Go to Library/Containers/com.apple.mail.  Move the folder com.apple.mail on your desktop. You must move the entire folder, not just the content.

  Reboot, re-launch Mail and test. If the problem is resolved, recreate the required e-mail settings and import emails you want to save to the folder on the desktop. You can then put the file in the trash. If the problem persists, return the folder where you have guessed replacing one that is there.

  If he does not repeat the above using Containers/com.apple.MailServiceAgent.

  Information derived from Linc Davis. Thanks to leonie for certain information contained in this.

  Mail crashing

  Accidents / unexpected

• Assistance required after you download Sierra - locked in a spiral of failure of the Installation

  Hello - I am a student of the University who made the mistake of thinking I had to upgrade my OS system after seeing some updates new flashy in the Sierra. Long story short, that my computer is locked into a cycle where I restarts and the installation process will begin installation but end abruptly and ask me to reboot again.

  I have exams and papers due and seriously want access to my data again. I don't have a back up of my files. As such, I am looking for a method that will allow me access to my files that I need to be able to read notes, print etc.

  Details: I have an old MBPro by the end of 2011. He was on as the primary OS x Lion. I had updated some time later. More recently, I got El Capitan and it worked very well. I downloaded Sierra in the background as I did work at home and after installing it, it asked me to reboot. This was the point that I was able to come back from. Reboot after installation scenario is as follows:

  -A progress bar comes up saying 34 minutes until completion

  -The progress bar goes to 33 minutes until completion

  -Beginning of fans of my computer acting upward and the bar stops and crashes of progression

  -The installation process says he doesn't have and asks me to restart my computer

  Specifically, I get the message 'Mac OS could not be installed on your computer. File system check or repair a failure. Quit the installer to restart your computer and try again. »

  When I quit the installer of the OS, I am taken to the startup disk option and asked to choose a system to reboot my computer with. I see 'Macintosh HD macOS 10.11.4' but when I click on it and try to restart I get the following error message, "you cannot change the disk on the disk selected. Startup disk could not gather enough information on the selected disk. »

  Things I've tried:

  Internet recovery mode: I went here to do a restore of the Mac OS x comes with my computer (Lion). This attempt fails and the computer tells me I can't downgrade because a more recent OSX is already on my computer...

  Recovery mode: I tried to come back just El Capitan from here. When I try to do the process will take literally one second before I get a notification saying: "an error occurred during the preparation of the installation. Try to rerun this application".

  Disk utility: I tried to do first aid and repair on this menu on the big disk image (since some of them pop up... I'm sure that the big one is my computer and the small setup of Sierra is?). I see that I 115Gigs franco 319Gigs departure. When I click on check and repair, the process takes some time and seems as he goes to halfway through before I get errors in the two. Repair error wonder backup my data.

  -some specific stuff; the journal for the repair of first aid says something like: the Macintosh HD volume could not be completely checked. File system check exit code is 8. Update support partition for the volume as required. File system check or repair a failure. Operation failed... »

  Safe mode: I can't start in safe mode. My computer will load the apple logo, progress on 3/4ths of the way start-up and then crash on its own and not restart.

  Things I have tried:

  Constituting a new boot USB of OS Sierra - I read that in so doing I can substitute the installation process that is going on right now on my computer and start a new... I hope one that works. I was not able to do this again, because I need someone to another macbook to make it and none of my friends won't let me touch their computers after the fiasco that happened on mine... Can I get some feedback on this?

  Backup: I don't have an external hard drive... I'm willing to buy one if necessary, but I don't know how to make a backup in a world where I don't have access to the major functional sections of my computer. Also, if my computer is * session here now, I'm worried that a backup will be essentially a * a backup... is this the work of the computer?

  Other thoughts:

  -my computer was working fine before I tried the upgrade... no complaints on my end, it was a real trooper

  -Maybe the download was corrupted?

  -I learned today that the operating system installation process requires internet connection - maybe that my internet connection is bad?

  -on that note, I want to say I tried a lot of different things. Been in different parts of the campus (different parts of my dorm building, IT support across campus, etc.). My University has also 3 options of WIFI, but each requires a separate verification process. Throughout this process, I have been connected to one of these methods. Switching may help? But, if I can't do the verification step (i.e. open a browser and type in the details of my student specific to actually use the web), I do not think that this will help you a lot. In addition, I am sure that I am already using one of the less frequently used options.

  I want to avoid a permanent possible deletion because there are important things on my computer.

  Any advice? Enjoy it!

  Same problem here on my Mac Mini end of 2012. I couldn't find any fix so far. The machine worked perfectly fine before with El Capitan and had about 50 GB of available disk space. I have use any version beta of Sierra, but officially released one that came yesterday. Really disappointing to see the new system operating software with fundamental questions and no good way to solve it.

  Any help really appreciated.

• How can I uninstall Sierra &amp; return to El Capitan without an external hard drive or equivalent required by the instructions online?

  How can I uninstall Sierra & return to El Capitan without an external hard drive or equivalent required by the instructions online? I find too many misadventures and not happy.

  Hello

  Check out this useful tutorial: https://www.igeeksblog.com/how-to-downgrade-macos-sierra-to-mac-os-x-el-capitan/

• from readers require manual connect

  We organize several vaults file AFP/SMB interview about 30 workstations, which now require manually hit 'connect' on the window of connection for each server. We checked the username/password to inhabit the keychain of the local machine (that we don't store the trousseau on the cloud), and all drives are listed in user "Login Items" list. This issue was not a problem on El Capitan, or earlier.

  Thanks in advance

  This question was for the first time in the beta versions of Sierra. It was not fixed at the time of the release. Maybe it will be fixed in an update of the Sierra...

• Sign in I tunes required Visa card

  Sign in I tunes required Visa card

  You have a question? If you do, you will need to provide details of what exactly you're trying to do, and what happens when you do that.

  If you mean that you are either prompted to enter in the details of payment before you can download anything, then you made? You get an error message by? If you try to create a new account and don't have payment details you must use these statements when you create an account: create or use your Apple ID without a mode of payment - Apple Support

• Woman updated its iPAD Pro 10.0.2 and is now locked screen display "Enter Access Code, contact ID requires your access code when you restart the iPad." She has no idea what is an "access code". Any help is appreciated.

  Woman updated its iPAD Pro 10.0.2 and is now locked screen display "Enter Access Code, contact ID requires your access code when you restart the iPad." She has no idea what is an "access code". Any help is appreciated.

  If she don't remember: If you have forgotten the password for your iPad, iPhone or iPod touch, or your device is disabled - Apple supports

• iTunes requires a newer Version of Apple Mobile Device Support

  I recently had a problem with iTunes not recognizing my iPhone, so I reinstalled the latest version of iTunes on my PC. Since then I have now received this error:

  iTunes requires a newer version of Apple Mobile Device Support. Please uninstall iTunes and Apple Mobile Device Support, then reinstall iTunes.

  I followed these steps, only to get the same error. I then stopped Apple Mobile Device Support Services, manually delete the files in c:\ProgramData\Apple\Installer Cache, repair the installation of iTunes and restart services, only to get the same result.

  I use iTunes 12 and 10 Windows.

  Would like to be able to sync my phone again.

  For general advice, see troubleshooting problems with iTunes for Windows updates.

  The steps described in the second case are a guide to remove everything related to iTunes and then rebuild what is often a good starting point, unless the symptoms indicate a more specific approach.

  Review the other boxes and other support documents list to the bottom of the page, in case one of them applies.

  The more information box has direct links with the current and recent if you have problems to download, must revert to an older version or want to try the version of iTunes for Windows (64-bit - for older video cards) as a workaround for problems with installation or operation, or compatibility with third-party software.

  Backups of your library and device should be affected by these measures but there are links to backup and recovery advice there.

  See iOS device is not showing in iTunes for Windows , if the device will not connect to iTunes after reinstallation.

  TT2

• Update to iOS 10 will require Apple ID?

  Long story short, my Apple ID has been locked and I forgot all my security questions and there is no way to unlock. Last time I updated my iPhone software, before I could use my iPhone in the new update, I had to enter my Apple ID, due to his confinement, I had to contact Apple where find us the solution, and they managed to unlock my iPhone without the need of my enter my Apple ID. The only problem was that the process took about 4 weeks to 1 month so, technically, I could not use my iPhone for 1 month.

  Now I really want to update my iPhone to iOS 10 5s, but I'm afraid, if it asks me to enter my Apple ID again, and I really don't want to go through 4 weeks of my iPhone is locked due to the problem of my Apple ID.

  So, my question is, update to iOS 10 will require the Apple ID?

  Yes. It will be.

• Apple pays in iOS 10 and iPhone 7 guest "CONTACT NAME REQUIRED" each time

  Why pay Apple invites me for a 'required Contact name' and 'Shipping Contact' whenever I try to use it now in 10 on the iPhone iOS 7?

  I can't find a way to put this info in the portfolio of Apple for the card at all times, so that I don't have to enter each time, which is really annoying.

  Yes, I have this problem too.
  How were your contacts synced, I had via google but all migrated it to iCloud and deleted Google but it did not help.

• need to update to 10.11.6 10.10.2; required to have 10.11 first; Cannot find 10.11 download anywhere?

  need to update to 10.11.6 10.10.2; required to have 10.11 first; Cannot find 10.11 download anywhere?

  El Capitan