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Can anybody suggest me for my application scenario?
My Client is running a study center who want to give tutorials(Video and Pdf files) with a windows application to his students so that they can revise their subject at their home.
This application has to be divided in to two parts
1) A windows app that will be used by admin who will issue videos and pdf's(a windows app setup) to his students according to their membership. Membership means here suppose a student is studying English subject then he is allowed to get English (pdf and video's) data with application and if someone is studying English and Mathematics then he is allowed to get both subjects study material with the application(Study material is already prepared in pdf and videos)
I am storing both pdf's and video's in database so that they should not be opened directly or should not be passed to the others
2) A windows app that will run at student PC and will show only study material according to his membership
Please suggest me how should i issue such type of setup with Database from the admin windows application to the student so that he can study only his relevant material.
I am developing a Windows application on Visual Studio 2010 with Sql Server 2008R2.
Please Suggest
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It will be just like any other app that consumes database data, you will make a connection to the database and retrieve the required information based on the user profile and display it in the appropriate controls (PDF viewer and video viewer).
In addition to your content storage you will need the user profile information.
Never underestimate the power of human stupidity
RAH
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Chaps, I restored a database I was given. When I look at the database file properties, the MDF file is in the SQL Server folder C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER2008\MSSQL\DATA but the LDF file is in a different folder. All the other databases installed have both files in the same place. Is it possible to "detach" the log file, copy it to the same place as the MDF file and reattach it so both are referenced in the same place? I've really got no idea how this occurred. I accept I must have messed it up somehow but I've no idea what I might have been done.
EDIT: It was my bad! I deleted the database and copied the two files to the same place. When I reattached the database, I must have clicked on the log file's eclipse (...) button. It was pointing to the wrong place but I was able to select the correct location. Sorry to have wasted time posting...
If there is one thing more dangerous than getting between a bear and her cubs it's getting between my wife and her chocolate.
modified 16-Jul-13 6:21am.
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In general it is not recommended to have the data and log files in the same place. Best practices would have them on separate drives.
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While I'm not a total noob to sql server, I can't lay claim to fully understanding issues related to system admin and best practices. Could you explain why it's desirable to split the locations? 
The reason I'm interested in knowing more is because by default, new databases seem to be created with the log and mdf files in the same location.
If there is one thing more dangerous than getting between a bear and her cubs it's getting between my wife and her chocolate.
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It has to do with disk access. For our setup we have different "disks" for data, log and tempdb. Unfortunately, I cannot find the link to explain this. I believe I found it while researching RAID setups.
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I can see the advantage splitting the database files onto different disks. I'll mention it to our support team and see if they can fill me in with more information. Thanks for the heads-up about it.
If there is one thing more dangerous than getting between a bear and her cubs it's getting between my wife and her chocolate.
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Dear All,
May i know how to replace other table time in to other date time
Select EP_SCAN_DATE,CAST(STUFF(STUFF(EP_SCAN_DATE,12,0,':'),15,0,':') AS DATETIME) as SCANDATE FROM AcmkIMS.dbo.EP_SCAN_HIST
Result :
2012-01-06 04:39:19.000
Want actual result:
example time is 09:00 replace in
2012-01-06 09:00
kindly advise
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Don't store dates as strings, and don't use string methods to manipulate dates. If you have any control over this database, you should change the EP_SCAN_DATE column to be a datetime.
You haven't specified which DBMS you're using. Assuming MS SQL, you can use something like this:
SELECT DateAdd(hour, 9, DateDiff(dd, 0, YourDateTimeColumn))
The DateDiff(dd, 0, X) will return just the date part of X, with the time set to midnight. You then use DateAdd to add as many hours, minutes and seconds as you require.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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HI, i used MS SQL server 2008
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In that case, you might want to consider changing the column type to datetime2(0)[^], which is two bytes smaller than a datetime.
Alternatively, if you never need the time portion of the column, you could change the type to date[^], which is even smaller. You'd then need to cast the value to datetime2(0) before adding the time:
SELECT DateAdd(hour, 9, Convert(datetime2(0), YourDateColumn))
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Let me reinforce what Richard has said, NEVER store date as text/varchar/char, ALWAYS use the correct data type.
Text will give you endless problems whenever you try and manipulate the data. The date and datetime data types will give you the tools to manipulate the data easily (not simply it can take a bit of thinking to work out how to achieve a given result).
Never underestimate the power of human stupidity
RAH
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Hello,
I recently had the oracle 11g Express Crashed.
I have copied the .dbf files from C:\oraclexe\app\oracle\oradata\XE to other folder and reinstalled Oracle 11g Express edition.
The files are
Control.dbf
sysaux.dbf
system.dbf
TEMP.DBF
UNDOTBS1.DBF
USERS.DBF
I want to remount the old database files, so that I can recover database.
Can you please tell me how can I do this?
-
Prathamesh
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Maciej Los,
Thanks for your comment, But you can see the Question is Listed on OTN.
The similar Question you referred is also mine.
I am still in search for the solution.
-
Prathamesh
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Hello,
I am using win XP with oracle 11g Express edition. I have a customized application written in c#.net and Oracle 11g express as backend.
It was all working fine till today, But now I am getting error.
While opening c# application I am getting ORA-1033 Oracle initialization or shutdown in progress
and if I try from command prompt.
sqlplus system/system123
Error : ORA-12560: TNS: protocol adapter error
tnsnames.ora content
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = user-pc)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = XE)
)
)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
)
)
Oracle Services in services.msc
NAme Status
oraclejobschedulerXE -
OracleMTSRecoveryService - Started
OracleServiceXE - Started
OracleXEClrAgent - Started
OracleXETBSListener - Started
TNSPING O/p.
C:\Documents and Settings\User>tnsping localhost
TNS Ping Utility for 32-bit Windows: Version 11.2.0.2.0 - Production on 14-JUL-2
013 15:57:23
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\sqlnet.ora
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=(PROTO
COL=TCP)(HOST=127.0.0.1)(PORT=1521)))
OK (30 msec)
C:\Documents and Settings\User>
content of listener.ora
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\11.2.0\server)
(PROGRAM = extproc)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = user-pc)(PORT = 1521))
)
)
DEFAULT_SERVICE_LISTENER = (XE)
Listener Status :
C:\Documents and Settings\User>lsnrctl status
LSNRCTL for 32-bit Windows: Version 11.2.0.2.0 - Production on 14-JUL-2013 16:00
:46
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.2.0 - Produ
ction
Start Date 14-JUL-2013 15:07:14
Uptime 0 days 0 hr. 53 min. 34 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File C:\oraclexe\app\oracle\product\11.2.0\server\network\a
dmin\listener.ora
Listener Log File C:\oraclexe\app\oracle\diag\tnslsnr\user-pc\listener\a
lert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=user-pc)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 3 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "xe" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
The command completed successfully
command :lsnrctl services
C:\Documents and Settings\User>lsnrctl services
LSNRCTL for 32-bit Windows: Version 11.2.0.2.0 - Production on 14-JUL-2013 16:02
:12
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 3 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
"ORACLE SERVER" established:0 refused:0 current:0 max:25 state:ready
CLRExtProc
(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\NTN_438_FC77BB0E_BBD1.ORA))
"ORACLE SERVER" established:0 refused:0 current:0 max:25 state:ready
CLRExtProc
(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\NTN_438_FC77BB0E_B074.ORA))
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "xe" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:7 refused:0 state:ready
LOCAL SERVER
The command completed successfully
Tried login using sysdba
C:\Documents and Settings\User>sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Sun Jul 14 16:03:30 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
ERROR:
ORA-12560: TNS:protocol adapter error
Enter user-name:
tried connecting from sql command line
SQL*Plus: Release 11.2.0.2.0 Production on Sun Jul 14 16:04:32 2013
Copyright (c) 1982, 2010, Oracle. All rights reserved.
SQL> shutdown immediate;
ORA-01012: not logged on
SQL> connect system/manager321
ERROR:
ORA-01033: ORACLE initialization or shutdown in progress
Process ID: 0
Session ID: 0 Serial number: 0
SQL>
Can you please suggest a solution? I have no fresh database backup.
-
Prathamesh
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Hi,
I have table like below
col1
5
10
15
20
I need result like
Col1 Col2
5 05--9
10 10--14
15 15--19
20 20-24
Plz help
Thank You
Anil Banjare
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How do you define ladder for the last value??
i.e. how do you get 24 in last row??
Apart from that, required query is -
SELECT COL1, NVL2(NEXT_COL1, COL1 || '--' || (NEXT_COL1 - 1), NULL) COL2
FROM (
SELECT COL1
,LEAD(COL1, 1, NULL) OVER (ORDER BY COL1) AS NEXT_COL1
FROM (SELECT LEVEL*5 COL1 FROM DUAL CONNECT BY LEVEL < 5)
)
;
And the output will be -
COL1 COL2
5 5--9
10 10--14
15 15--19
20 NULL
Thanks & Regards,
Niral Soni
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USE tempdb ;
GO
DECLARE @ladderTable TABLE ( Col1 INT ) ;
DECLARE @incrementValue INT = 0 ;
INSERT INTO @ladderTable ( Col1 )
VALUES ( 5 ),
( 10 ),
( 15 ),
( 20 ) ;
SELECT TOP 1
@incrementValue = Col1
FROM @ladderTable
ORDER BY Col1 ASC ;
SELECT st.Col1,
CAST(st.Col1 AS VARCHAR(20)) + '-'
+ CAST(ISNULL(dt.Col1, st.Col1 + @incrementValue) - 1 AS VARCHAR(20)) AS LadderSequence
FROM @ladderTable AS st
LEFT OUTER JOIN @ladderTable AS dt ON st.Col1 < dt.Col1
AND ( st.Col1 + @incrementValue ) >= dt.Col1 ;
GO
Thanks,
Karunakar
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I need to give an introductory database course to a bunch of people who generally are able to write simple SQL queries, but still mainly use files to save stuff. (fits files, ascii files, csv files, ...)
My course starts with presenting some pro's and con's, explaining the basic structure (tables, links, constrains, keys, indexes, ...) and diving into some basic SQL. A second lesson (still under development) would be coding against databases (creating a connection, SQL injection, ...)
I also included a lab with exercises (for lesson 1, lesson 2 to be done).
I looked at some tutorials on the internet, but still would like some advice on how to best bring this topic.
thanks in advance.
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V. wrote: A second lesson (still under development) would be coding against databases (creating a connection, SQL injection, ...)
I'd recommend explaining sprocs and functions, moving to Xml in the third lesson. Creating a connection to the database from a non-sql language has little to do with SQL.
What's their role? If design comes into play, you could reserve a week for the topic of database-normalization. There's examples on structures that break normalization on the wikipedia[^]; the update-anomaly is always a nice intro as people recognize it from the real world
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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Thanks! that already helps !
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After reading several documents , i am still confused whether to use Filestream or Varbinary for storing files?
my application need PDf files to be saved in database , size can be between 100 KB to 4 MB
I guess in order to use filestream we have to configure server to use that. while varbinary can work as it is.
what will be best way?Experts please comment.
Thanks.
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We use filestream only to reduce the size of the database backup which is retained for some ridiculous number of years! documents are backed up seperately.
Never underestimate the power of human stupidity
RAH
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