Best approch for Database connectivity
Hi All,
I am developing web application.
Can any one tell me that what is the best approch to use database connectivity for my web application?
how can i mentain my connection object throught out application?
Please help me about my improving code logic for web application.
Thanks
Pandev
Consider connection pooling.
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I build Messenger by RMI+SWING + ORACLE is it best Approch For Messenger?
i make messenger like MSN by using RMI , Swing and oracle for database , now i want
to asked is it best approch for makinng messenger which is work like MSN, and is it
work proper when i host it for public use ?
i also want to konw can i make it by using Servlet if yes then how ?
and can i use beens for this perpouse ?
If any body know about it then please tell me,
Thanks
M.Arif.Hi,
I have worked on the same patterns long back and had done a lot.Anyway creating the application like msn is what you want or the Efficient Chat Application.I believe you will be interested in creating in chat application which will not decieve you at the critical point.
The RMI technology is the best for the java programmer,In fact you can create the thing with the
servlet but then there will be restriction ,the clients can only be browsers.So what you would
like is to create the General application which will serve any of the user agent.Now the client can
be swing,applet,browser or console.For each you will have to install the required software at the
client side.
But the server tech will remain same,the RMI server........
i also want to konw can i make it by using Servlet if
yes then how ?
and can i use beens for this perpouse ?Yes you can do this.....
But there will be restrictions,as you cannot get the latest info unless you send it from server.
What you will have to do is create an object at the server which will interacted from the servlet,and the Object should contain all the info till the application is running.So you have to
read,update,remove the data corresponding to each client from that object with invocation of servlet...
Hope you understand............
regards vicky -
Could not load library for database connection LCA
Hi,
I am facing RFC connection prblem while connectiong to database. I have installed SCM5.1 and live cache in single server
Please find the logs.
Work process log:
B Mon Jul 20 11:19:13 2009
B create_con (con_name=LCA)
B Loading DB library 'E:\usr\sap\SC7\DVEBMGS03\exe\dbsdbslib.dll' ...
M *** ERROR => DlLoadLib: LoadLibrary(E:\usr\sap\SC7\DVEBMGS03\exe\dbsdbslib.dll) Error 126 [dlnt.c 241]
M Error 126 = "The specified module could not be found."
B *** ERROR => Couldn't load library 'E:\usr\sap\SC7\DVEBMGS03\exe\dbsdbslib.dll'
[dbcon.c 4731]
B ***LOG BYG=> could not load library for database connection LCA [dbds#1 @ 1035] [dbds 1035 ]
A
A Mon Jul 20 11:21:58 2009
A GENER starting remote generation: /SAPAPO/OM_SYNC_LC_DB (requested by W1).
B
SM21:
No shared library found for the database with ID LCA|
No shared library found for the database with ID LCA
/SAPAPO/OM17|/SAPAPO/OM_SYNC_LC_DB|K |SAP Web AS Problem|SBAC |
Documentation for system log message BY G :
As well as the standard connection, an attempt was made to set up
another database connection, under the specified ID. The Shared Library
for this second database could not be found.
The Shared Library is usually found in the the Executable
directory (profile parameter DIR_LIBRARY) under the name dbs
<dbs>slib<os_ext>. <dbs> stands for the database type and <os_ext>
stands for the operating system-specific extension of the Shared
Libraries.
The database type is determined from the entry that corresponds to the
specified DB ID in the table DBDCON. Check whether the data in this
entry is correct.
ST22
Runtime Errors DBIF_DSQL2_CONNECTERR
Exception CX_SY_NATIVE_SQL_ERROR
Date and Time 20.07.2009 11:22:21
Short text
Error setting up a secondary database connection
What happened?
Connection to database system not possible with identifier "LCA".
|----
System environment
SAP-Release 700
Application server... "
Network address...... "
Operating system..... "Windows NT"
Release.............. "5.2"
Hardware type........ "8x AMD64 Level"
Character length.... 16 Bits
Pointer length....... 64 Bits
Work process number.. 8
Shortdump setting.... "full"
Database server... "
Database type..... "ORACLE"
Database name..... "SC7"
Database user ID.. "SAPSC7"
Terminal................. " "
Char.set.... "C"
SAP kernel....... 701
created (date)... "Jul 6 2009 23:47:55"
create on........ "NT 5.2 3790 Service Pack 1 x86 MS VC++ 14.00"
Database version. "OCI_10201_SHARE (10.2.0.2.0) "
Patch level. 50
Patch text.. " "
Database............. "ORACLE 9.2.0.., ORACLE 10.1.0.., ORACLE 10.2.0.."
SAP database version. 701
Operating system..... "Windows NT 5.0, Windows NT 5.1, Windows NT 5.2, Windows
NT 6.0"
Information on where terminated
Termination occurred in the ABAP program "SAPLSLCAPPS" - in
"LCA_EXISTS_LCA_ROUTINE".
The main program was "/SAPAPO/TS_BATCH_RUN ".
In the source code you have the termination point in line 23
of the (Include) program "LSLCAPPSU05".
The program "SAPLSLCAPPS" was started as a background job.
Job Name....... "MACROS"
Job Initiator.. "SC7GEN"
Job Number..... 10222002
The termination is caused because exception "CX_SY_NATIVE_SQL_ERROR" occurred
in
procedure "LCA_EXISTS_LCA_ROUTINE" "(FUNCTION)", but it was neither handled
locally nor declared
in the RAISING clause of its signature.
The procedure is in program "SAPLSLCAPPS "; its source code begins in line
1 of the (Include program "LSLCAPPSU05 ".
Please help me to resolve the issue.
SurajHi Natalia Khlopina,
I have raised OSS message to SAP.
Below is the information
E:\usr\sap\SC7\SYS\exe\uc\Copy_ of_NTAMD64_15062009>sdbregview -l
Server Utilities e:/sapdb/programs 7.7.02.08 64 bit valid
DB Analyzer e:/sapdb/programs 7.7.02.08 64 bit valid
PCR 7301 e:/sapdb/programs 7.3.01.21 valid
PCR 7500 e:/sapdb/programs 7.5.00.42 64 bit valid
SAP Utilities e:/sapdb/programs 7.7.02.08 64 bit valid
APO LC APPS f:/sapdb/lcs/db/sap 6.00.004 64 bit valid
Redist Python e:/sapdb/programs 7.7.02.08 64 bit valid
Base e:/sapdb/programs 7.7.02.08 64 bit valid
JDBC e:/sapdb/programs 7.6.03.02 valid
Messages e:/sapdb/programs MSG 0.5010 valid
ODBC e:/sapdb/programs 7.7.02.08 64 bit valid
SQLDBC 77 e:/sapdb/programs 7.7.02.08 64 bit valid
Database Kernel f:/sapdb/lcs/db 7.7.02.08 64 bit valid
Loader e:/sapdb/programs 7.7.02.08 64 bit valid
SQLDBC e:/sapdb/programs 7.7.02.08 64 bit valid
SQLDBC 76 e:/sapdb/programs 7.6.01.15 64 bit valid
Fastload API e:/sapdb/programs 7.7.02.08 64 bit valid
C:\Documents and Settings\sc7adm>disp+work
disp+work information
kernel release 701
kernel make variant 701_REL
compiled on NT 5.2 3790 Service Pack 1 x86 MS VC++ 14.00
compiled for 64 BIT
compilation mode UNICODE
compile time Jul 6 2009 23:47:55
update level 0
patch number 50
source id 0.050
supported environment
database (SAP, table SVERS) 700
701
operating system
Windows NT 5.0
Windows NT 5.1
Windows NT 5.2
Windows NT 6.0
Thanks for quick responce.
Suraj -
Could someone point me to a document for best practices for database maintenance with SharePoint 2013? I have read the 2010 document, but I'm hoping their is an updated one that I'm just missing.
My problem is that our DBA recently noticed that many of our SharePoint databases have high index fragmentation. I have the Health Analyzer rules enabled for index fragmentation and they run daily, but I've never received an alert despite the majority
of our databases having greater than 40% fragmentation and some are even above 95%.
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in 2007.
Thanks,
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Sampled mode
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Or
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I have seen cases where the indexes are not automatically managed by the rule and require a manual defragmentation with a Full Scan, instead of Sampled. Once the Full Scan defrag completed, the timer job started handling the index fragmentation automatically.
Trevor Seward
Follow or contact me at...
  
This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs. -
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Set password for database connection at runtime
Hi there,
is it possible to set the password and/or the user for the database connection at runtime.
The use case is to read the values from a file and decrypt them, and the to establish the conenction. So that i don't habe to redeploy everything if there is a change.
Thanks in advance.How exactly do i set these values for the datasource?
Edited by: Alex on 15.02.2012 09:50
€: JDeveloper 11.1.1.5.0
The use case is, that there is a file with an encrypted password. This should be decrypted and then be used for the connection. So when this encrypted passowrd changes, i don't want to edit and deploay the app once again. Instead the new encrypted password should be decrypted via code an then be used.
Edited by: Alex on 15.02.2012 10:00 -
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Is there a way to pass in a database connection from PBL for a database defined as an External Resource in an ALBPM project? That way, I can test it using the "abstract" definition in the project and know that when it is deployed to production it will use the concrete definition. And, I won't have to maintain a separate configuration of the JDBC url.
Is there a better way to do this? Or is it possible?
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Post Author: rsharp
CA Forum: Publishing
Hi
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Design question for database connection in multithreaded socket-server
Dear community,
I am programming a multithreaded socket server. The server creates a new thread for each connection.
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Message was edited by:
dakgerSo your suggestion is to use a static method from a
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Marlanselect * from v$session;Some entries in this view are dynamic processes (type = 'BACKGROUND') and you may want to exclude those depending on your requirements.
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Report in production prompts for database connection info
Hi,
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I tried this solution, which keeps the db server name in a web.config variable:
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ConnectionInfo boConnectionInfo = new ConnectionInfo();
boConnectionInfo.ServerName = ConfigurationManager.AppSettings["dbServerName"];
boConnectionInfo.DatabaseName = "dbCMRP_Employees";
boConnectionInfo.IntegratedSecurity = true;
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foreach (ReportDocument boSubreport in boReportDocument.Subreports)
ModifyConnectionInfo(boSubreport.Database, boConnectionInfo);
Session.Add("Report", boReportDocument);
Response.Redirect("CrystalReportsViewer.aspx");
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Thanks,
DanThanks for your replies.
I think I've done what's outlined in the Troubleshooting Guide link that Ludek gave me. I did install Process Monitor and found the "Access Denied" entry, but I'm not sure which folder needs permission given to IIS APPPOOL\ASP.NET v4.0.
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Description: IIS Worker Process
Company: Microsoft Corporation
Name: w3wp.exe
Version: 7.5.7601.17514
Path: C:\Windows\SysWOW64\inetsrv\w3wp.exe
Command Line: C:\Windows\SysWOW64\inetsrv\w3wp.exe -ap "ASP.NET v4.0" -v "v4.0" -l "webengine4.dll" -a
.\pipe\iisipm461f344a-3d68-4e7c-b42e-ca18eac4553c -h "C:\inetpub\temp\apppools\ASP.NET v4.0\ASP.NET v4.0.config" -w "" -m 0 -t 20
PID: 7512
Parent PID: 3892
Session ID: 0
User: IIS APPPOOL\ASP.NET v4.0
Auth ID: 00000000:00465886
Architecture: 32-bit
Virtualized: False
Integrity: High
Started: 8/29/2011 1:03:58 PM
Ended: (Running)
Modules:
w3wp.exe 0x120000 0x8000 C:\Windows\SysWOW64\inetsrv\w3wp.exe Microsoft Corporation 7.5.7601.17514
Microsoft.Web.Administration.dll 0x28ae0000 0x24000 C:\Windows\assembly\GAC_MSIL\Microsoft.Web.Administration\7.0.0.0__31bf3856ad364e35\Microsoft.Web.Administration.dll Microsoft Corporation 6.1.7601.17514
App_Web_822ce1a1f503e532a2e860f7ce344f6d0d0f2eba.ascx.3417f053.eb4fk61t.dll 0x28b10000 0x8000 C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\intranet\58a686e6\86baa618\App_Web_822ce1a1f503e532a2e860f7ce344f6d0d0f2eba.ascx.3417f053.eb4fk61t.dll n/a 0.0.0.0
App_Web_aed28e8a45aa161f6c9fc3f563283cb89b317bdc.ascx.3417f053.rodqolhn.dll 0x28c90000 0x8000 C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\intranet\58a686e6\86baa618\App_Web_aed28e8a45aa161f6c9fc3f563283cb89b317bdc.ascx.3417f053.rodqolhn.dll n/a 0.0.0.0
pvlocale-1-0.dll 0x2fc80000 0x76000 C:\Program Files (x86)\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Common\SAP BusinessObjects Enterprise XI 4.0\win32_x86\pvlocale-1-0.dll SAP BusinessObjects 14.0.0.760
System.Data.Entity.ni.dll 0x2fd50000 0xcb8000 C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Data.Entity\978e8514751373383f79c3fdd667aa2b\System.Data.Entity.ni.dll Microsoft Corporation 4.0.30319.1
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