How to create new database?

Question

In the "Oracle ODBC Test" client app, when I try to create a database with ...
create database swett
... I get the error "ORA-01100: database already mounted" error.
Why? I can create a table with:
create table mytable ....
and it builds it in the SYS database. I can insert rows into it and select rows out of it OK.
I just don't know how to create a new database via ODBC. (There are probably ways to create a database via interactive GUI, but I need to do it via SQL statements for my app.)
My connection is with user "internal" into SID ORCL.
I'm using Oracle 8 Server on Netware 5 and the Windows 95 client on a Windows 98 machine.
null

Answer 1

Hi,
I hope, below stored procedure is useful for your scenario.
CREATE PROC Create_New_Database
( @DBNAME VARCHAR(550)
)AS
Test : Exec [Create_New_Database] @DBNAME='DB20122013'        
BEGIN TRY               
SET NOCOUNT ON   
DECLARE @sql VARCHAR(MAX), @DBNAME_NEW VARCHAR(550),@num int
IF EXISTS(SELECT 1 FROM sys.databases WHERE name=@DBNAME) AND ISNUMERIC(RIGHT(@DBNAME,4))=1
BEGIN
SELECT @num= RIGHT(@DBNAME,4) 
SELECT @DBNAME_NEW='DB'+CAST(@num AS VARCHAR(10))+''+CAST(@num+1 AS VARCHAR(10)) 
IF EXISTS(SELECT 1 FROM sys.databases WHERE name=@DBNAME_NEW)
BEGIN
SELECT @DBNAME_NEW+' database already exists'
END
ELSE
BEGIN
SET @sql='USE '+@DBNAME+'  '+' backup database '+@DBNAME+' to disk = ''C:\'+@DBNAME+'.bak''  '
+' restore database '+@DBNAME_NEW+' from disk = ''C:\'+@DBNAME+'.bak'''
+' with move '''+@DBNAME+''' to ''C:\'+@DBNAME+'_data.mdf'' ,
move '''+@DBNAME+'_log'' to ''C:\'+@DBNAME+'_log.log'''
EXEC (@sql)
SET @sql=''
SET @sql=' USE '+@DBNAME_NEW+' IF EXISTS(SELECT 1 FROM SYS.TABLES WHERE NAME=''Dailytemp'') 
BEGIN DROP TABLE Dailytemp END IF EXISTS(SELECT 1 FROM SYS.TABLES WHERE NAME=''DailyMain'') 
BEGIN DROP TABLE DailyMain END '
EXEC (@sql)
END  
END
ELSE 
BEGIN
SELECT 'Database is now found or Database name does not mach the scenario'
END
SET NOCOUNT OFF   
END TRY   
BEGIN CATCH                
 DECLARE @ErrorMessage NVARCHAR(4000)                
    DECLARE @ErrorSeverity INT                
    DECLARE @ErrorState INT                           
    SELECT @ErrorMessage = ERROR_MESSAGE(), @ErrorSeverity = ERROR_SEVERITY(),@ErrorState = ERROR_STATE()                
    RAISERROR (@ErrorMessage,@ErrorSeverity,@ErrorState )                
END CATCH;   
GO
Regards,
RAMBHARATH