oracle11g

问题 OS: Windows 7 64bit VB: Visual Studio 2010 Oracle Client: 11g I am developing an application that connects to an Oracle 11g server. I am able to connect to the Oracle server via Oracle SQL Developer, ODBC (in SYSWOW64), and in VB Server Explorer. I am using the .NET reference Oracle.DataAccess located at: C:\Oracle\product\11.2.0\client_32\ODP.NET\bin\2.x\Oracle.DataAccess.dll I have tried adding the .DLL files to my bin folder as suggested by other questions and that does not work. Does

问题 I am using Oracle SQL Developer to connect to Oracle Express 11g and create a new user. I keep on getting the same error when I try to create a new connection (and test it) or when I try to login with a newly created username and password (mad by right-clicking "other users" table in default connection "xe") The error- Failure - Test Failed: ORA-01017: invalid username/password; logon denied How can I fix this issue ? 回答1: Seems you're using an user with not enough privilegies, try with

问题 Suppose we want to keep the entire line of a string only if a particular word say e.g 'test' appears at starting of line. If it appears anywhere then the entire line should be removed e.g if function_test()=5; //here this entire line should be removed test sample =5; //here this entire should be there 回答1: From Oracle 10g R2 on you should be able to use the anchor \A to require the match at the beginning of the string (will only work for single-line strings thus). http://www.regular

问题 I have a form request_form.php, that is manage Purchase Request Form for request item. Purchase_Request_No : (automatic - autoincrement) Date : Dept : Supplier : Item_Request : Example have a 5 row : 1. 2. 3. 4. 5. I want to make once Purchase Request have 1 Purchase_Request_No. Example : Purchase_Request_No : 17 Date :25-Jul-2012 Dept :Production Supplier :Microsoft Item_Request : 1.Windows XP Professional 2.Keyboard 3.Mouse 4.LCD Monitor 5.Speaker So, how can I make it with 1 Purchase

问题 Here is the SQL Server CTE, trying to convert to Oracle CTE or regular oracle query.. ;with cte as (Select AC, M, Y, D, E, F, CD from tblA WHere (Y = YEAR(GETDATE()) and M = Month(dateadd(month, -1, GETDATE()))) ), cte2 as (Select A.AC,Max(A.Y)as Y, Max(A.M) as M, Max(A.CD) as CD from tbl A Inner join cte B on B.AC = A.AC WHere A.CD is Not Null and B.CD is Null Group by A.AC) , cte3 as (Select C.AC, C.Y, C.M, C.D, C.E, C.F, C.CD from tblA C Inner join cte2 D on C.AC = D.AC and C.Y= D.Y and C

问题 I'm trying to add a new INTEGER column to a table. The column must be NOT NULL, with a default value of 1, and only accept values greater than zero. I'm trying to do this at the moment: ALTER TABLE FOO_AUTHORS ADD PUBLICATION_PERIOD_DAYS INTEGER DEFAULT(1) NOT NULL CONSTRAINT publicationPeriodDays CHECK (PUBLICATION_PERIOD_DAYS>0); Is there a way to do this in one line? I'm following this example, but it's not working because of the NOT NULL. Is the NOT NULL then necessary? I'm getting the

问题 I have a weird problem at hand. First have a look at my table schema. A(ID) B(ID,AID) C(ID,AID) D(ID,CID) The map files are as below: MAP A { HasMany(x => x.B).Cascade.AllDeleteOrphan().Inverse().KeyColumn("AID"); HasMany(x => x.C).Cascade.AllDeleteOrphan().Inverse().KeyColumn("AID"); } MAP B { References(x => x.A).Column("AID"); } MAP C { References(x => x.A).Column("AID"); HasMany(x => x.D).Cascade.AllDeleteOrphan().Inverse().KeyColumn("BID"); } MAP D { References(x => x.C).Column("CID"); }

问题 Is there a way we can fetch comments form Oracle using Java Code?I tried Using Describe but it did not work for JDBC(Java Code). Can u suggest some way? 回答1: You can running this query to get table's comment. select comments from user_tab_comments where table_name = 'T'; If you want to get column's comment: select comments from user_col_comments where table_name = 'T'; 回答2: the java code would be similar what you would be using with any normal query i.e by establishing a connection and then

问题 I want to remove duplicate rows in the following data. Data: a a a b a c a d a e b a b b b c b d b e c a c b c c c d c e d a d b d c d d d e e a e b e c e d e e The output should be column1 and column2 different. and it should not be the following data. a b a c a d a e b a b c b d b e c a c b c d c e d a d b d c d e e a e b e c e d because a in column 1 and b in column2 is same as b in column1 and a in column2 or else simply i mean to say 1+2 is same as 2+1. So, the output should be a,b a,c a

问题 Is there any way, complex or simple, to get a graphical representation for an existing full schema on my DB? I'll try to be more specific: I already have a defined schema on Oracle 11g, with its relationships, foreign and primary keys, sequences and all the stuff you might imagine. The problem is that someone forgot to create a schematic image so the rest of the world could understand what is happening in there.. So if you knew someway, any program, that given a DDL of an Schema gives me a