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  • 13 Lösungen für eine höhere Sicherheit in einer Oracle Datenbank (Best Practices)

    - by C.Muetzlitz
    Externe Einflüsse wie Gesetze fordern die IT auf, (unsere) Daten zu schützen. Doch wie prüft man die eingestellte Sicherheit einer Oracle Datenbank überhaupt? Ist die geforderte Sicherheit ausreichend umgesetzt und zwar im Idealfall entsprechend dem notwendigen Schutzbedarf? Wann haben Sie eigentlich die Sicherheit Ihrer Oracle Datenbank das letzte Mal überprüft? Und noch besser gefragt, kennen Sie die Bedrohungen und die davon abgeleiteten Risiken? Alles Fragen deren Antworten ein verantwortlicher Anwendungsbesitzer sofort parat haben sollte oder sehen Sie das anders? Wie kann man sich am besten vor Bedrohungen schützen? Die einzige richtige Antwort auf diese Frage ist, durch Informationen und daraus abgeleitetes Wissen. Nun umfassen Informationen und das darin versteckte Wissen wahrscheinlich sehr viele Quellen. D.h. es wird immer schwieriger sich das richtige Wissen anzueignen und dieses Wissen für den Schutz von Daten und Datenbanken anzuwenden.Betrachtet man die Oracle Datenbank, dann empfehle ich zwei wesentliche Bereiche, die man tun muss bzw. wissen sollte. Die Best Practices Lösungen kennen, die man implementieren sollte und teilweise muss, um gute Sicherheit zu garantieren.Ich nenne diesen Bereich „13 Lösungen für eine höhere Sicherheit in einer Oracle Datenbank (Best Practices)“ Wie sieht der wirkliche Sicherheitszustand einer Oracle Datenbank aus.Diesen Bereich nenne ich „Check Oracle DB Security“ In diesem Beitrag möchte ich Sie nun in die Grundlagen einer guten Oracle Datenbank Sicherheit einführen und Sie befähigen, den Sicherheitszustand Ihrer Datenbank selber bestimmen zu können. 13 Lösungen für eine höhere Sicherheit in einer Oracle Datenbank (Best Practices)“  Password-Management aktiveren:Seien Sie sich bewusst, dass schwache Passwords eine hohe Bedrohung bedeuten. Aktivieren Sie ein vernünftiges Password Management Kennen Sie den Funktionsumfang Ihrer aktuellen Datenbank Version, auch die Funktionen, die nicht mehr unterstützt werden.Der "New Feature und Upgrade Guide" sollte eine Pflichtlektüre werden. Implementieren Sie eine passende Mindestsicherheit.Oracle liefert hier viele Vorgaben. Haben Sie das Rollen- und Account Management im GriffHier geht es um eine kontrollierte Privilegien-Vergabe (Least Privileg), eine Zwecktrennung im Account Management und eine andauernde Überprüfung des Rollenmanagements und Zugriffskonzepts Sicheres Datenbank Link Konzept implementierenGerade im Bereich der Datenintegration werden wiederholt DB Links in der Datenbank konfiguriert. Diese Links eröffnen u.U. unkontrollierte Zugriffe auf entfernte Datenbanken. Tracken Sie den Zugriff und setzen Sie ein sicheres DB Link Konzept um. Oracle liefert hier die entsprechenden Vorgaben. Definieren Sie Schutz-Policies für Ihre Anwendungen.Hierunter fällt z.B. ein richtiges Anwendungs-Owner und Anwendungs-User Setup Implementieren Sie den notwendigen Datenschutz für wichtige DatenKennen Sie die Daten, die geschützt werden müssen und schützen Sie diese angemessen. Kontrollieren Sie den Ressourcenverbrauch in Ihrer Datenbank Implementieren Sie eine sinnvolle Zwecktrennung in der DatenbankAuch bei der Datenbank ist es sinnvoll eine Zwecktrennung zu implementieren. Schalten Sie eine sinnvolle und gesetzeskonforme Protokollierung ein.Gesetze erfordern das und Oracle gibt eine Mindestprotokollierung vor. Implementieren Sie Prozesse, die den guten Zustand der Datenbank erhalten Führen Sie regelmäßige Health- Checks durchOracle liefert z.B. mit dem Enterprise Manager eine vollständige Library. Definieren Sie ein funktionierendes Patch-ManagementKennen Sie die Critical Patch Updates und handeln Sie falls notwendig. Check Oracle DB Security oder wer den Sicherheitszustand nicht kennt, wird auch keine Maßnahmen ergreifen Den Sicherheitszustand einer Oracle Datenbank zu überprüfen, ist sehr wichtig. Hierfür kann man verschiedene Anwendungen nutzen, die im Markt erhältlich sind. Eine gute Entscheidung wäre z.B. den Oracle Enterprise Manager (Cloud Control) mit dem Lifecycle Management zu nutzen, der periodisch den Sicherheitszustand für Sie ermittelt. Eine manuelle Überprüfung ist auch möglich, erfordert aber tiefes Wissen. Doch auch trotz der hohen Wissensanforderung ist ein Verstehen, wie man eine Oracle Datenbank manuell auf Sicherheit überprüft, wichtig. Vertrauen Sie nicht mehr auf Vermutungen, sondern nehmen Sie die Sicherheit Ihrer Datenbank ernst und lernen Sie den realen Zustand Ihrer Datenbank kennen. Wissen über reale Zustände und Wissen über geeignete Konzepte schützen. Erst dann können Sie entscheiden, welche Maßnahmen tatsächlich notwendig sind. Weiterführende Informationen: Oracle Online Dokumentation für die Datenbank Verschiedene Artikel in der Knowledge Base vom Oracle Support Das neue Buch „Oracle Security in der Praxis. Vollständige Sicherheitsüberprüfung Ihrer Oracle Datenbank“.

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  • DB DOC Enhancements for Oracle SQL Developer v4

    - by thatjeffsmith
    One of our more popular features is ‘DB Doc.’ It’s like JAVADOC for the database. Pick a connection, right-click, and go. It will generate an HTML documentation set for that schema. For version 4, we’ve introduced a few enhancements based on user requests. That’s right, you asked, and we listened. Added support for Package Bodies Added parallelization option for larger doc sets Enhanced the HTML formatting a bit Select Your Object Types and Generation Options We’ve changed the default selection of object types to be included and added support for package bodies There’s also an option to auto-open the documentation set after it’s been generated. And the HTML As Requested

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  • Correct DB details produce “Database server was not found” (Prestashop Installation)

    - by Steve
    At stage 3 of the Prestashop Installation, I enter the DB details which I know to be correct, and I receive the error: Database server was not found. Please verify the login, password, and database server name fields. The server is localhost, and I have verified the database name and username. Why can Prestashop not find the server? This occurs when choosing InnoDB and MyIsam. If I change the server from localhost to the public hostname I receive the same error.

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  • Berkeley DB Java Edition 4.0.103 Available

    - by charles.lamb
    We'd like to let you know that JE 4.0.103 is now at http://www.oracle.com/technology/software/products/berkeley-db/je/index.html. The patch release contains both small features and bug fixes, many of which were prompted by feedback on this forum. Some items to note: New CacheMode values for more control over cache policies, and new statistics to enable better interpretation of caching behavior. These are just one initial part of our continuing work in progress to make JE caching more efficient. Fixes for proper cache utilization calculations when using the -XX:+UseCompressedOops JVM option. A variety of other bug fixes. There is no file format or API changes. As always, we encourage users to move promptly to this new release.

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  • Saving image from Gallery to db - Coursor IllegalStateException

    - by MyWay
    I want to save to db some strings with image. Image can be taken from gallery or user can set the sample one. In the other activity I have a listview which should present the rows with image and name. I'm facing so long this problem. It occurs when I wanna display listview with the image from gallery, If the sample image is saved in the row everything works ok. My problem is similar to this one: how to save image taken from camera and show it to listview - crashes with "IllegalStateException" but I can't find there the solution for me My table in db looks like this: public static final String KEY_ID = "_id"; public static final String ID_DETAILS = "INTEGER PRIMARY KEY AUTOINCREMENT"; public static final int ID_COLUMN = 0; public static final String KEY_NAME = "name"; public static final String NAME_DETAILS = "TEXT NOT NULL"; public static final int NAME_COLUMN = 1; public static final String KEY_DESCRIPTION = "description"; public static final String DESCRIPTION_DETAILS = "TEXT"; public static final int DESCRIPTION_COLUMN = 2; public static final String KEY_IMAGE ="image" ; public static final String IMAGE_DETAILS = "BLOP"; public static final int IMAGE_COLUMN = 3; //method which create our table private static final String CREATE_PRODUCTLIST_IN_DB = "CREATE TABLE " + DB_TABLE + "( " + KEY_ID + " " + ID_DETAILS + ", " + KEY_NAME + " " + NAME_DETAILS + ", " + KEY_DESCRIPTION + " " + DESCRIPTION_DETAILS + ", " + KEY_IMAGE +" " + IMAGE_DETAILS + ");"; inserting statement: public long insertToProductList(String name, String description, byte[] image) { ContentValues value = new ContentValues(); // get the id of column and value value.put(KEY_NAME, name); value.put(KEY_DESCRIPTION, description); value.put(KEY_IMAGE, image); // put into db return db.insert(DB_TABLE, null, value); } Button which add the picture and onActivityResult method which saves the image and put it into the imageview public void AddPicture(View v) { // creating specified intent which have to get data Intent intent = new Intent(Intent.ACTION_PICK); // From where we want choose our pictures intent.setType("image/*"); startActivityForResult(intent, PICK_IMAGE); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data); // if identification code match to the intent, //if yes we know that is our picture, if(requestCode ==PICK_IMAGE ) { // check if the data comes with intent if(data!= null) { Uri chosenImage = data.getData(); String[] filePathColumn = {MediaStore.Images.Media.DATA}; Cursor cursor = getContentResolver().query(chosenImage, filePathColumn, null, null, null); cursor.moveToFirst(); int columnIndex = cursor.getColumnIndex(filePathColumn[0]); String filePat = cursor.getString(columnIndex); cursor.close(); ImageOfProduct = BitmapFactory.decodeFile(filePat); if(ImageOfProduct!=null) { picture.setImageBitmap(ImageOfProduct); } messageDisplayer("got picture, isn't null " + IdOfPicture); } } } Then the code which converts bitmap to byte[] public byte[] bitmapToByteConvert(Bitmap bit ) { // stream of data getted for compressed bitmap ByteArrayOutputStream gettedData = new ByteArrayOutputStream(); // compressing method bit.compress(CompressFormat.PNG, 0, gettedData); // our byte array return gettedData.toByteArray(); } The method which put data to the row: byte[] image=null; // if the name isn't put to the editView if(name.getText().toString().trim().length()== 0) { messageDisplayer("At least you need to type name of product if you want add it to the DB "); } else{ String desc = description.getText().toString(); if(description.getText().toString().trim().length()==0) { messageDisplayer("the description is set as none"); desc = "none"; } DB.open(); if(ImageOfProduct!= null){ image = bitmapToByteConvert(ImageOfProduct); messageDisplayer("image isn't null"); } else { BitmapDrawable drawable = (BitmapDrawable) picture.getDrawable(); image = bitmapToByteConvert(drawable.getBitmap()); } if(image.length>0 && image!=null) { messageDisplayer(Integer.toString(image.length)); } DB.insertToProductList(name.getText().toString(), desc, image ); DB.close(); messageDisplayer("well done you add the product"); finish(); You can see that I'm checking here the length of array to be sure that I don't send empty one. And here is the place where Error appears imo, this code is from activity which presents the listview with data taken from db private void LoadOurLayoutListWithInfo() { // firstly wee need to open connection with db db= new sqliteDB(getApplicationContext()); db.open(); // creating our custom adaprer, the specification of it will be typed // in our own class (MyArrayAdapter) which will be created below ArrayAdapter<ProductFromTable> customAdapter = new MyArrayAdapter(); //get the info from whole table tablecursor = db.getAllColumns(); if(tablecursor != null) { startManagingCursor(tablecursor); tablecursor.moveToFirst(); } // now we moving all info from tablecursor to ourlist if(tablecursor != null && tablecursor.moveToFirst()) { do{ // taking info from row in table int id = tablecursor.getInt(sqliteDB.ID_COLUMN); String name= tablecursor.getString(sqliteDB.NAME_COLUMN); String description= tablecursor.getString(sqliteDB.DESCRIPTION_COLUMN); byte[] image= tablecursor.getBlob(3); tablefromDB.add(new ProductFromTable(id,name,description,image)); // moving until we didn't find last row }while(tablecursor.moveToNext()); } listView = (ListView) findViewById(R.id.tagwriter_listoftags); //as description says // setAdapter = The ListAdapter which is responsible for maintaining //the data backing this list and for producing a view to represent //an item in that data set. listView.setAdapter(customAdapter); } I put the info from row tho objects which are stored in list. I read tones of question but I can't find any solution for me. Everything works when I put the sample image ( which is stored in app res folder ). Thx for any advice

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  • How fast is Berkeley DB SQL compared to SQLite?

    - by dan04
    Oracle recently released a Berkeley DB back-end to SQLite. I happen to have a hundreds-of-megabytes SQLite database that could very well benefit from "improved performance, concurrency, scalability, and reliability", but Oracle's site appears to lack any measurements of the improvements. Has anyone here done some benchmarking?

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  • restoring myisam mysql db on a different machine

    - by RainDoctor
    I have copied the web db directory(/var/lib/mysql/data/web/), when mysql is not running. I transferred this directory to another machine, where mysql is running. web db's stuff is myisam based. I am thinking about how to restore this on a different server. The strategy I have on my mind is the following. copy the data directory of web db to the new server. on new server, 'create database web', which creates a directory in /var/lib/mysql/data copy all files from the step to the new directory created in 2. bounce mysql My question: how to deal with information_schema for this new db?

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  • SVN shared password db on Windows server

    - by Greg McGuffey
    I'd like to have a shared password-db file for several repositories on my home svn server (run under Windows). I've figured out that I need to set all the repositories to have the same realm, but I can't figure out how to just put in an absolute path to the shared password-db. I.e. the full path is something like: c:\svn.users\passwrd What do I set the password-db setting to in svnserve.conf so it can find this file?

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  • eXist-db: can't start webstart client on a closed port, reverse proxied via apache

    - by rvdb
    I am configuring an Apache HTTP server so it reverse proxies requests starting with /app/ to an eXist-db instance running in a Tomcat server, on port 8082. This port has been closed in the firewall and is inaccessible to the outer world. Following the eXist documentation, I have following rules in place in my httpd.conf file: ProxyPass /apps/ http://localhost:8082/ ProxyPassReverse /apps/ http://localhost:8082/ ProxyPassReverseCookiePath /apps/ / All goes well for requests to e.g. 'http://mydomain/apps/exist/index.xml'. Yet, the webstart client (accessible at 'http://localhost:8082/exist/webstart/exist.jnlp' on the web server) doesn't work behind the proxy. While 'http://mydomain/apps/exist/webstart/exist.jnlp' does generate a valid exist.jnlp file, that file can't be executed. The reason seems quite obvious: apparently, the eXist-db instance generating the exist.jnlp file only sees the proxied request as: 'http://localhost:8082/exist/webstart/exist.jnlp'. Yet, since the exist.jnlp file is executed on the client, that reference is meaningless (unless the client computer happens to have an eXist-db instance running on that port). Executing the exist.jnlp file hence fails with a 'connection refused' error. Yet, there's no problem at all connecting a local eXist-db Java client to the proxied eXist instance with the URL xmldb:exist://mydomain/apps/exist/xmlrpc. The problem lies in generating the webstart exist.jnlp file, which seems to need access to a publicly accessible URL. However, opening port 8082 and replacing the Proxy references to 'http://localhost:8082' with 'http://mydomain:8082' IMO rather destroys the point of reverse proxying. Do others have had success reverse proxying eXist-db on a closed port behind Apache? Are there perhaps some Proxy configuration settings I have overlooked (I'm no expert at all) that can make eXist see the original request instead of the proxied one? Kind regards, Ron

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  • SQL Server 2005: Rename DB Server Instance Name?

    - by Code Sherpa
    Hi, Can somebody tell me how to rename the DB server instance name and a DB name in SQL Server 2005? Right Now I Have SERVER/OLDNAME -- oldnameDB I want to change the server instance and also change the db name. I have tried: EXEC sp_renamedb 'oldName', 'newName' and that has changed the dbname as it appers in the tree directory. But, when I do "select @@servername" it is the old name. Also, the MDF and LDF files are still the old name. How do change instance and db names as a clean sweep across the server? Thanks.

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  • Exchange 2007 | Mailbox DB Size 180GB

    - by rihatum
    Hi All, I have a Exchange 2007 SP1 server running on Windows 2008 6 HD Drives in a RAID-1 OS, DB, Logs on separate RAID-1 Disks Size of the Mailbox Database is 183GB and increasing We only have First Storage Group and Second Storage Group There is no more space on the server to install new Physical Disks and create a Storage Group Q - Can I resize the RAID-1 Partition where the DB is ? Q - Any other suggestions as to how I can decrease the Mailbox DB Size ? Will be grateful for your suggestions on this. Kind Regards

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  • Progress 4GL and DB to Oracle and cloud

    - by llaszews
    Getting from client/server based 4GLs and databases where the 4GL is tightly linked to the database to Oracle and the cloud is not easy. The least risky and expensive option (in the short term) is to use the Progress OpenEdge DataServer for Oracle: Progress OpenEdge DataServer This eliminates the need to have to migrate the Progress 4GL to Java/J2EE. The database can be migrated using SQLWays Ispirer: Ispirer SQLWays ProgressDB migrations tool The Progress 4GL can remain as is. In order to get the application on the cloud there are a few approaches: 1. VDI - Virtual Desktop is a way to put all of the users desktop in a centralized environment off the desktop. This is great in cases where it is just not one client/server application that the user needs access too. In many cases, users will utilize MS Access, MS Excel, Crystal Reports and other tools to get at the Progress DB and other centralized databases. Vmware's acquistion of Wanova shows how VDI is growing in usage. Citrix is the 800 pound gorilla in the VDI space with Citrix WinFrame (now called XenDesktop). Oracle offers a VDI solution that Oracle picked up when it acquired Sun. 2. Hypervisor Server Virtualization - Of course you can place applications written in client/server languages like Progress 4GL buy using server virtualization from Oracle, VMWare, Microsoft, Citrix and others. 3. Microsoft Remote Desktop Services (aka: Terminal Services Client) The entire idea is to eliminate all the client/server desktop devices and connections which require desktop software and database drivers. A solution to removing database drivers from the desktop is to use DataDirect SQLLink

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  • DB API for shell scripting (any shell)

    - by foampile
    I am faced with some legacy shell scripts that run batch data processing jobs in Oracle using SQL+. For the most part, the data tier does not have to communicate back to the script with retrieved data to be passed for shell-level processing but in a few cases it does. The problem is, SQL+ is really meant to be an end user app and not an API that can communicate with other clients programmaticaly. That is why people have invented APIs such as DBD::DBI for Perl, JDBC for Java, ODBC etc. The way it is done is they invoke SQL+ and then parse the output, which is clearly designed for human eye consumption, using tools like sed and awk. The whole thing is at best a hack and very prone to bugs. Since this client is rather conservative with their technology, they don't want to scale their scripts up to Perl or Python where there are data access APIs. So I am wondering whether there are similar APIs for shell, e.g. K or bash. What I would like is if an API would return data in a 2-dimensional array or strings (for the lack of type setting) so that I can just read DB data like that. The way they do it now is akin to parsing regular web page HTML to get a single stock quote rather than cleanly calling a web service and be done with it. Anybody know of a product I can use? Thanks

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  • Middle tier language for interfacing C/C++ with db and web app

    - by ggkmath
    I have a web application requiring a middle-tier language to communicate between an oracle database and math routines on a Linux server and a flex-based application on a client. I'm not a software expert, and need recommendations for which language to use for the middle-tier. The math routines are currently in Matlab but will be ported to C (or C++) as shared libraries. Thus, by default there's some C or C++ communication necessary. These routines rely on FFTW (www.fftw.org), which is called directly from C or C++ (thus, I don't see re-writing these routines in another language). The middle tier must manage traffic between the client, the math routines, and the Oracle database. The client will trigger the math routines aynchronously, and the results saved in the db and transferred back to the client, etc. The middle-tier will also need to authenticate user accounts/passwords, and send out various administrative emails. Originally I thought PhP the obvious choice, but interfacing asychronously multiple clients with the C or C++ routines doesn't seem straightforward. Then I thought, why not just keep the whole middle tier in C or C++, but I'm not sure if this is done in the industry (C or C++ doesn't seem as web-friendly as other languages). There's always Jave + JNI, but maybe that introduces other complications (not sure). Any feedback appreciated.

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  • ???????!DB??/SSD???~2010?12??????????(???)

    - by Yusuke.Yamamoto
    2010?12???????????(???)?????????????????? ??????????????????????????????????? ???????????????????? SQL?????????? Part1~5????????????????Part4?Part5?????????? ???????????????????????????????????????????????????SSD??????? ?????????????? ????????Oracle GoldenGate:?????!! DB??/Upgrade????????? ??????????????????????????SSD???????????? - Oracle Real Application Clusters 11g Release 2 on Oracle VM with Database Smart Flash Cache ?? ???? ???? ??? ?????? ??????????????!? Oracle Database 11g Release2 - Windows? ??????????? ??? ??????(RAC) ?????????Oracle Database 11gR2 RAC ?????????·??? ASM ? Microsoft Windows x86-64 ??? ?????? ??????Oracle Database 11gR2 Oracle Grid Infrastructure ?????? ??? ???? ???????????????!? ?????????? ??? ??????? ??????Oracle Database 11gR2 ???????????????? ??? ?????? ???????/?????!! ??????·???? ~?????RMAN????~?Oracle???????? ??? ??????? ???????/??????????!? ???????·?????????Oracle???????·??????(????)?? ??? ??????? ???????/????????????????? SQL????????? ??? Part1&2 New!???????????????SQL?????? ??? ??? ???????/??????!Oracle Database????!? ??? Oracle Enterprise Manager ?????????Oracle Enterprise Manager 11g Release 1 Grid Control(11.1.0.1.0) for Linux x86-64 ?????????

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  • zend_db and join

    - by premtemp
    Hello, I am trying to understand how to use Zend_DB in my program but I have some problem. The class below (DatabaseService) work when I pass it a simple query. However, if I pass it it query with a join clause my page just hangs and not error is return. I cut and paste the qry in a query browesr and it is valid Any help would be great $SQL = "select name from mytable" $db = new DatabaseService($dbinfo) $db ->fetchall($SQL ) // works ----------------------------------------------------------- $SQL = "select count(*) as cnt from EndPoints join CallID on EndPoints.`CallID` = CallID.CallID where EndPoints.LastRegister >= '2010-04-21 00:00:01' and EndPoints.LastRegister <= '2010-04-21 23:59:59' " $db = new DatabaseService($dbinfo) $db ->fetchall($SQL ) // DOES NO WORK class DatabaseService { function DatabaseService($dbinfo,$dbname="") { try { $dbConfig = array( 'host' => $this->host, 'username' => $this->username, 'password' => $password, 'dbname' => $this->dbname ); $this->db = Zend_Db::factory($this->adapter, $dbConfig); Zend_Db_Table::setDefaultAdapter($this->db); } catch(Zend_Exception $e) { $this->error = $e->getMessage(); Helper::log($this->error); return false; } } public function connnect() { if($this->db !=null) { try { $this->db->getConnection(); return true; } catch (Zend_Exception $e) { $err = "FAILED ::".$e->getMessage()." <br />"; } } return false; } public function fetchall($sql) { $res= $this->db->fetchAll($sql); return $res; } }

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  • ??! ??! Oracle/DB??????~2011?1??????????(???)

    - by Yusuke.Yamamoto
    2011?1???????????(???)?????????????????? ????????RAC/ASM?????????????????? ??????????????????????????? Oracle GoldenGate ???/????????????? ???????????????! ??! Oracle????????????????????????????????????????? ???! ??! Oracle????????????????????? ???! ??! Oracle????????? ????????????Oracle Database 11gR2 ??????????????? Oracle Database 11gR2(11.2.0.2) ???????????????? ????????????????????????? Oracle Database 11gR2(11.2.0.2)????????????:???PSR???????? ?? ???? ???? ??? ??????(RAC) ?????????Oracle Database 11gR2 RAC ?????????·??? ASM ? Microsoft Windows x86-64 ??? ?????? ??????????????!? Oracle Database 11g Release2 - Windows? ??????????? ??? ?????? ??????Oracle Database 11gR2 Oracle Grid Infrastructure ?????? ??? ???? ???????????????!? ?????????? ??? ??????? ??????Oracle Database 11gR2 ???????????????? ??? ??????? ???????/??????????!? Export/Import??? ??? ??????? ???????/?????!! ???????·?????? ~Statspack??~ ??? ????? ????????Oracle GoldenGate:?????!! DB??/Upgrade????????? New! ??? ??????? ???????/??????????!? ???????·???????? ??? ??????? ???????????! ??! Oracle????????? ?????? New!

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  • Can SqlAnywhere's UltraLiteJ DB tables be viewed in the Database Explorer of the Eclipse IDE

    - by Tobias
    Hi, I am developing a Blackberry app which should be able to access a DB. Here is my development environment and the tools I am using: Eclipse (Galileo) IDE with the Blackberry plugin installed. Blackberry OS 5.0 SQLAnywhere's DB 11 with UltraLiteJ (I am targeting Blackberrys running OS 4.1 and above) I have successfully executed a sample project for building a Blackberry application that uses the UltraLiteJ DB, following the tutorial in the UltraLiteJ documentation*. The tutorial creates, populates and retrieves data from the DB using java code. Now, I want to be able to access the tables and view data in them from the Eclipse IDE. Something similar to the FireFox plugin for SqlLite or say the Enterprise Manager for Sql Server 2005 which is a DB Explorer providing access to the StoredProcedures, Views, DB Diagrams etc. for a Database. Can someone please direct me as to how to tackle this problem? I hope the question is descriptive and clear. Much Obliged. *http://dcx.sybase.com/index.html#1101en/ulj_en11/uj-ch03.html

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  • Why connection in Python's DB-API does not have "begin" operation?

    - by newtover
    Working with cursors in mysql-python I used to call "BEGIN;", "COMMIT;", and "ROLLBACK;" explicitly as follows: try: cursor.execute("BEGIN;") # some statements cursor.execute("COMMIT;") except: cursor.execute("ROLLBACK;") then, I found out that the underlying connection object has the corresponding methods: try: cursor.connection.begin() # some statements cursor.connection.commit() except: cursor.connection.rollback() Inspecting the DB-API PEP I found out that it does not mention the begin() method for the connection object, even for the extensions. Mysql-python, by the way, throws the Deprecation Warning, when you use the method. sqlite3.connection, for example, does not have the methd at all. And the question is why there is no such method in the PEP? Is the statement somehow optional, is it enough to invoke commit() instead?

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  • Codeigniter - selecting children and parents from db

    - by Tomek Buszewski
    I want to pull from my database records corresponding to parent_id, like this: function getChildren($id, $parent_id) { $q = $this->db->select('id, name, slug, plat'); $q = $this->db->from('games'); $q = $this->db->where('parent_id',$id); $q = $this->db->or_where('id',$parent_id); $q = $this->db->get(); return $q->result_array(); } It - if it's a children game - get parent_id and search for a game with such id and for other games that has parent_id same as this one. If it's the parent game, it only looks for games with parent_id same as it's id. The problem is... it's not always working. I have four games in db: id | parent_id | title 15 | 0 | Abe 19 | 15 | Abe 20 | 0 | RE2 21 | 20 | RE2 DS First two works, last two - only children (id = 21) shows parent.

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  • return the result of a query and the total number of rows in a single function

    - by csotelo
    This is a question as might be focused on working in the best way, if there are other alternatives or is the only way: Using Codeigniter ... I have the typical 2 functions of list records and show total number of records (using the page as an alternative). The problem is that they are rather large. Sample 2 functions in my model: count Rows: function get_all_count() { $this->db->select('u.id_user'); $this->db->from('user u'); if($this->session->userdata('detail') != '1') { $this->db->join('management m', 'm.id_user = u.id_user', 'inner'); $this->db->where('id_detail', $this->session->userdata('detail')); if($this->session->userdata('management') === '1') { $this->db->or_where('detail', 1); } else { $this->db->where("id_profile IN ( SELECT e2.id_profile FROM profile e, profile e2, profile_path p, profile_path p2 WHERE e.id_profile = " . $this->session->userdata('profile') . " AND p2.id_profile = e.id_profile AND p.path LIKE(CONCAT(p2.path,'%')) AND e2.id_profile = p.id_profile )", NULL, FALSE); $this->db->where('MD5(u.id_user) <>', $this->session->userdata('id_user')); } } $this->db->where('u.id_user <>', 1); $this->db->where('flag <>', 3); $query = $this->db->get(); return $query->num_rows(); } results per page function get_all($limit, $offset, $sort = '') { $this->db->select('u.id_user, user, email, flag'); $this->db->from('user u'); if($this->session->userdata('detail') != '1') { $this->db->join('management m', 'm.id_user = u.id_user', 'inner'); $this->db->where('id_detail', $this->session->userdata('detail')); if($this->session->userdata('management') === '1') { $this->db->or_where('detail', 1); } else { $this->db->where("id_profile IN ( SELECT e2.id_profile FROM profile e, profile e2, profile_path p, profile_path p2 WHERE e.id_profile = " . $this->session->userdata('profile') . " AND p2.id_profile = e.id_profile AND p.path LIKE(CONCAT(p2.path,'%')) AND e2.id_profile = p.id_profile )", NULL, FALSE); $this->db->where('MD5(u.id_user) <>', $this->session->userdata('id_user')); } } $this->db->where('u.id_user <>', 1); $this->db->where('flag <>', 3); if($sort) $this->db->order_by($sort); $this->db->limit($limit, $offset); $query = $this->db->get(); return $query->result(); } You see, I repeat the most of the functions, the difference is that only the number of fields and management pages. I wonder if there is any alternative to get as much results as the query in a single function. I have seen many tutorials, and all create 2 functions: one to count and another to show results ... Will there be more optimal?

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  • Data management in unexpected places

    - by Ashok_Ora
    Normal 0 false false false EN-US X-NONE X-NONE Data management in unexpected places When you think of network switches, routers, firewall appliances, etc., it may not be obvious that at the heart of these kinds of solutions is an engine that can manage huge amounts of data at very high throughput with low latencies and high availability. Consider a network router that is processing tens (or hundreds) of thousands of network packets per second. So what really happens inside a router? Packets are streaming in at the rate of tens of thousands per second. Each packet has multiple attributes, for example, a destination, associated SLAs etc. For each packet, the router has to determine the address of the next “hop” to the destination; it has to determine how to prioritize this packet. If it’s a high priority packet, then it has to be sent on its way before lower priority packets. As a consequence of prioritizing high priority packets, lower priority data packets may need to be temporarily stored (held back), but addressed fairly. If there are security or privacy requirements associated with the data packet, those have to be enforced. You probably need to keep track of statistics related to the packets processed (someone’s sure to ask). You have to do all this (and more) while preserving high availability i.e. if one of the processors in the router goes down, you have to have a way to continue processing without interruption (the customer won’t be happy with a “choppy” VoIP conversation, right?). And all this has to be achieved without ANY intervention from a human operator – the router is most likely to be in a remote location – it must JUST CONTINUE TO WORK CORRECTLY, even when bad things happen. How is this implemented? As soon as a packet arrives, it is interpreted by the receiving software. The software decodes the packet headers in order to determine the destination, kind of packet (e.g. voice vs. data), SLAs associated with the “owner” of the packet etc. It looks up the internal database of “rules” of how to process this packet and handles the packet accordingly. The software might choose to hold on to the packet safely for some period of time, if it’s a low priority packet. Ah – this sounds very much like a database problem. For each packet, you have to minimally · Look up the most efficient next “hop” towards the destination. The “most efficient” next hop can change, depending on latency, availability etc. · Look up the SLA and determine the priority of this packet (e.g. voice calls get priority over data ftp) · Look up security information associated with this data packet. It may be necessary to retrieve the context for this network packet since a network packet is a small “slice” of a session. The context for the “header” packet needs to be stored in the router, in order to make this work. · If the priority of the packet is low, then “store” the packet temporarily in the router until it is time to forward the packet to the next hop. · Update various statistics about the packet. In most cases, you have to do all this in the context of a single transaction. For example, you want to look up the forwarding address and perform the “send” in a single transaction so that the forwarding address doesn’t change while you’re sending the packet. So, how do you do all this? Berkeley DB is a proven, reliable, high performance, highly available embeddable database, designed for exactly these kinds of usage scenarios. Berkeley DB is a robust, reliable, proven solution that is currently being used in these scenarios. First and foremost, Berkeley DB (or BDB for short) is very very fast. It can process tens or hundreds of thousands of transactions per second. It can be used as a pure in-memory database, or as a disk-persistent database. BDB provides high availability – if one board in the router fails, the system can automatically failover to another board – no manual intervention required. BDB is self-administering – there’s no need for manual intervention in order to maintain a BDB application. No need to send a technician to a remote site in the middle of nowhere on a freezing winter day to perform maintenance operations. BDB is used in over 200 million deployments worldwide for the past two decades for mission-critical applications such as the one described here. You have a choice of spending valuable resources to implement similar functionality, or, you could simply embed BDB in your application and off you go! I know what I’d do – choose BDB, so I can focus on my business problem. What will you do? /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;}

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  • Linking ?++ - BDB - LNK2001

    - by MInner
    BDB is compiled on the same PC, under same VS. #include <db_cxx.h> int main(){ Db b(NULL, 0); return 0; } 1main.obj : error LNK2001: unresolved external symbol ""public: virtual __thiscall Db::~Db(void)" (??1Db@@UAE@XZ)" 1main.obj : error LNK2001: unresolved external symbol ""public: __thiscall Db::Db(class DbEnv *,unsigned int)" (??0Db@@QAE@PAVDbEnv@@I@Z)" what could be wrong?

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