Servlet attribute synchronization

Hello,
I have servlet and class responsible for database access. I create this class during context initialization and bind as context attribute. Later my servlets access it to operate on database. My question is: do I need synchronize something in these database access classes? For example, if I define some field (say catalogName) which stores database table name and when servlets access class they change value of this field to access different tables, do I need to synchronize this field? Because if two users access the class at the same moment they both might want to change the value of this field. Hope I made my question clear.
Andrius

Short answer: Yes.
Long answer: You should rethink your design if you store such information in an Instance held in the ServletContext. A better approach is to just store a connection pool in the ServletContext and let each servlet retrieve a connection in a thread safe manner from the pool and then put it back into the pool after processing. This way you reduce thread contention and improve performance as well as the quality of your desgn.
regards
robert

Similar Messages

How to access servlet objects from OA page controller class

Hi everybody!
I need to put some value into servlet attribute in OA page controller class to read it from ordinary servlet later.
How can i do it? Is it possible to get HttpServletRequest and HttpServletResponse objects from page controller?
Thank you.

I have a servlet which receives uploaded files with special attributes (something like tags for file) using POST request.
This attributes created when user open page in standard OAF page via page controller.
On client side I have an applet which uploads user selected file to my servlet and passes this file attributes.
Now this attributes passes as plain text. I want to encrypt this attributes to hide attribute details from user. To do this I need to share some information between OAF page and my servlet.
I know that OAF supports URL encryption, but to decrypt it I should use standard pageContext object.
But in ordinary servlet I can't use it.

Basic questions about Tomcat

Hi all, I'm new to Tomcat and I have a few questions...
1) I have a HttpServlet class in my server. Will an instance of this class be created for each request?. For performance reasons, can I specify a number of instances to be pre-created before user requests? (creating them at user request may be too slow)
2) I'd like to know more about threads in Servlet Containers. If my HttoServlet class has an instance of a class, will the attributes of this class be thread-safe? How does this work?
thank you in advance

1) I have a HttpServlet class in my server. Will an
instance of this class be created for each request?.No. There is one instance of each servlet object.
For performance reasons, can I specify a number of
instances to be pre-created before user requests?
(creating them at user request may be too slow)On my laptop creating a simple object takes 0.00000001 seconds. Object creation is fast in Java; don't worry about it (unless you really are trying to create a hundred million objects per second and profiling shows that's the bottleneck in your application.)
2) I'd like to know more about threads in Servlet
Containers. If my HttoServlet class has an instance
of a class, will the attributes of this class be
thread-safe? How does this work?Don't put fields in servlets. Synchronize access to any data that are shared between threads.

Multipe threads access: best way to handle

Hi,
I understand that we have issues when multiple threads access the instance variables in a servlet. Do we have the same issue with the local variables? I have a doGet method that has two lines of code.
line 1: read request parameters and create a data object.
line 2: make a call to facade to update this object in database.
What options I have to make sure that there are no concurrent access issues.
-Deepak

No, you don't have the same issue with local variables, new ones are created for each thread. You should either avoid adding attributes to a servlet, or synchronize access to them if they are objects (there are no issues with primitive values).

WebServer 6.1 SP3 SSL reverse proxy to Sun One Application Server 7

I have an application in the appserver7 that requires SSL authentication. I have already installed a self cert in the appserver7, and the authentication works fine when I browse directly to the appserver.
The appserver7 has both listener for port 80 and 443 enabled.
I'm currently setting up a webserver (WebServer 6.1 SP3) to act as a reverse proxy to the appserver7. The reverse proxy for the basic jsp pages found in the appserver worked fine.
When I try to access the login page, in the appserver, in ssl mode, I am unable to do so. I then try changing the obj.conf to the following, from http to https:
<Object name="passthrough">
ObjectType fn="force-type" type="magnus-internal/passthrough"
Service fn="service-passthrough" method="(GET|HEAD|POST)" servers="https://172.2
8.48.53"
However, it still doesn't work.
Do I need to install a self cert in the webserver and enable the ssl listener as well?
Do I need to install any reverse proxy addon for the appserver? Any
setup for the obj.conf in the appserver?
Any ideas how to get this done?
Thanks.
Mac.

The Web Server 6.1 SP3 Reverse Proxy Plugin is supported, but it sounds like you're trying to do something that simply isn't possible.
If you want the Reverse Proxy Plugin to perform SSL mutual authentication with the Application Server using the client's certificate, that's impossible due to the nature of SSL mutual authentication. If the plugin could impersonate the client, then SSL would be vulnerable to MITM (Man In The Middle Attacks). Fortunately, SSL isn't vulnerable to such attacks because the plugin doesn't know the client's private key.
If you simply want the Reverse Proxy Plugin to pass information about the client's certificate along to the Application Server, that hapens automatically. There's nothing special to configure. Note that the plugin will not authenticate to the Application Server in this case. Rather, it will simply copy the X.509 certificate into the proprietary Proxy-auth-cert: HTTP request header.
The application running on the Application Server can inspect the Proxy-auth-cert: header using standard Servlet APIs. Alternatively, you can use Application Server 7's auth-passthrough AuthTrans SAF to cause the contents of the Proxy-auth-cert: header to be copied to the javax.servlet.request.X509Certificate Servlet attribute.

Does anybody have a solution for the NAT problem?

Is somebody's application or Applet able to play any RTP stream behind a NAT Router? Can anybody establish any kind of connection / broadcasting between two subnets? I've got my RTP-Transmitter@public IP (using RTPManager...SendStream.start()), and I try to receive the stream from my local network which is behind a router (DHCP: 192.168....).
I read forums, newsgroups, looked for any solution for days all over the web but I've found nothing. Zero.
What's the secret? Any hints?
Best regards from Munich / Germany,
r.v.

Hi
I have the same problem.
I have one appletTransmitter that capture video from webcam and transmit it to other client on internet.
I try to transmit medialocator from appletTransmitter to servlet1 and then save MedialLocator as servlet attribute, then other client can connect to servlet2 that send saved MediaLocator to appletClient.
APPLETTRANSMITTER:
URL url=null;
MediaLocator media=new MediaLocator("vfw://0");
try{
url = new URL("http://localhost:8080/servlet1");
catch(MalformedURLException mue){mue.printStackTrace();}
URLConnection conn=null;
try{
conn = url.openConnection();
catch(IOException ioe){ioe.printStackTrace();}
conn.setDoOutput(true);
OutputStream os=null;
ObjectOutputStream oos=null;
InputStream in=null;
ObjectInputStream iin=null;
MediaLocator mResp=null;
String r=null;
try{
os=conn.getOutputStream();
oos=new ObjectOutputStream(os);
oos.writeObject(media);
//oos.writeObject("Prova Servlet");
oos.flush();
catch(IOException io){io.printStackTrace();}
catch(ClassNotFoundException cn){cn.printStackTrace();}
SERVLET1
ObjectInputStream objin = new ObjectInputStream(request.getInputStream());
MediaLocator ml =null;
try{
ml = (MediaLocator) objin.readObject();
context.setAttribute("media",ml);
catch(ClassNotFoundException e)
{e.printStackTrace()}
But on servlet1 there is a ClassNotFoundException: MediaLocator
What do we think about the solution and exception problem?
Best Regards,
Nico from Italy

Sys.fn_xe_file_target_read_file performance

Hi,
I am working with extended events and the function sys.fn_xe_file_target_read_file. I am using the file_name and file_offset to get new events, since the last time I queried the function. I am checking for new events once a minute like this:
exec sp_executesql N'SELECT @@SERVERNAME AS server_name, @session_name AS session_name, @collection_id AS collection_id, module_guid, package_guid, [object_name], event_data, [file_name], file_offset FROM sys.fn_xe_file_target_read_file(@file_path, NULL,
@file_name, @file_offset)',N'@session_name nvarchar(13),@collection_id bigint,@file_path nvarchar(84),@file_name nvarchar(104),@file_offset bigint',@session_name=N'system_health',@collection_id=4127175,@file_path=N'C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\LOG\system_health*.xel',@file_name=N'C:\Program
Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\LOG\system_health_0_130317495005090000.xel',@file_offset=66560
I have started to get a problem on some servers that it is very slow, even when there are few new events. It can take up to 30 seconds to get one single event.
After some investigations I found out that it seems to be related to the number of files. I had configured the extended event target to 100 files of the size 5 MB. On the server where we have the problem there were 41 files. When I deleted all files but
the latest, then the time went down to about 1 second. After stopping and starting the session and then deleting the old file (keeping only one small file), the time went down to about 50 ms.
So I am trying to figure out how sys.fn_xe_file_target_read_file works (what is it doing), and the pros and cons of having many files or large files. I will do some testing, but if anyone has any experiences to share it would be great.
The version number is 11.0.3373.0.
Best regards
Ola Hallengren
http://ola.hallengren.com

I was doing some testing with Process Monitor. I can see that it is accessing all files. Here is the output from this
query:
SELECT *
FROM sys.fn_xe_file_target_read_file('C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health*.xel',
NULL,
'C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130317438925230000.xel',
2050560
"Time of Day","Process Name","PID","Operation","Path","Result","Detail"
"21:51:06.3127313","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health*_0_9223372036854775807.xel","NAME INVALID","Desired Access: Read Attributes, Synchronize, Dis, Options: Synchronous
IO Non-Alert, Non-Directory File, Attributes: n/a, ShareMode: Read, Write, AllocationSize: n/a"
"21:51:06.3129550","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health*_0_9223372036854775807.xel","NAME INVALID","Desired Access: Read Attributes, Synchronize, Dis, Options: Synchronous
IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, AllocationSize: n/a"
"21:51:06.3131669","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health*_0_9223372036854775807.xel","NAME INVALID","Desired Access: Read Attributes, Synchronize, Dis, Options: Synchronous
IO Alert, Attributes: n/a, ShareMode: Read, Write, AllocationSize: n/a"
"21:51:06.3133810","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health*_0_9223372036854775807.xel","NAME INVALID","Desired Access: Read Attributes, Synchronize, Dis, Options: Synchronous
IO Non-Alert, Open Reparse Point, Attributes: N, ShareMode: Read, Write, AllocationSize: n/a"
"21:51:06.3227988","sqlservr.exe","1784","QueryDirectory","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health*.xel","SUCCESS","Filter: system_health*.xel, 1: system_health_0_130313895108460000.xel"
"21:51:06.3233465","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130313895108460000.xel","SUCCESS","Desired Access: Generic Read, Dis, Options: Sequential Access, Synchronous
IO Non-Alert, Non-Directory File, Open No Recall, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened"
"21:51:06.3234822","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130313895108460000.xel","SUCCESS","AllocationSize: 1,019,904, EndOfFile: 1,019,904, NumberOfLinks:
1, DeletePending: False, Directory: False"
"21:51:06.3235452","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130313895108460000.xel","FILE LOCKED WITH ONLY READERS","SyncType: SyncTypeCreateSection, PageProtection: "
"21:51:06.3235944","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130313895108460000.xel","SUCCESS","AllocationSize: 1,019,904, EndOfFile: 1,019,904, NumberOfLinks:
1, DeletePending: False, Directory: False"
"21:51:06.3236933","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130313895108460000.xel","SUCCESS","SyncType: SyncTypeOther"
"21:51:06.3239419","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130314358881960000.xel","SUCCESS","Desired Access: Generic Read, Dis, Options: Sequential Access, Synchronous
IO Non-Alert, Non-Directory File, Open No Recall, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened"
"21:51:06.3240541","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130314358881960000.xel","SUCCESS","AllocationSize: 5,242,880, EndOfFile: 5,241,344, NumberOfLinks:
1, DeletePending: False, Directory: False"
"21:51:06.3241084","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130314358881960000.xel","FILE LOCKED WITH ONLY READERS","SyncType: SyncTypeCreateSection, PageProtection: "
"21:51:06.3241553","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130314358881960000.xel","SUCCESS","AllocationSize: 5,242,880, EndOfFile: 5,241,344, NumberOfLinks:
1, DeletePending: False, Directory: False"
"21:51:06.3242521","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130314358881960000.xel","SUCCESS","SyncType: SyncTypeOther"
"21:51:06.3245153","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130316898777600000.xel","SUCCESS","Desired Access: Generic Read, Dis, Options: Sequential Access, Synchronous
IO Non-Alert, Non-Directory File, Open No Recall, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened"
"21:51:06.3246253","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130316898777600000.xel","SUCCESS","AllocationSize: 954,368, EndOfFile: 952,832, NumberOfLinks: 1, DeletePending:
False, Directory: False"
"21:51:06.3246796","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130316898777600000.xel","FILE LOCKED WITH ONLY READERS","SyncType: SyncTypeCreateSection, PageProtection: "
"21:51:06.3247272","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130316898777600000.xel","SUCCESS","AllocationSize: 954,368, EndOfFile: 952,832, NumberOfLinks: 1, DeletePending:
False, Directory: False"
"21:51:06.3248247","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130316898777600000.xel","SUCCESS","SyncType: SyncTypeOther"
"21:51:06.3250799","sqlservr.exe","1784","CreateFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130317438925230000.xel","SUCCESS","Desired Access: Generic Read, Dis, Options: Sequential Access, Synchronous
IO Non-Alert, Non-Directory File, Open No Recall, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened"
"21:51:06.3251936","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130317438925230000.xel","SUCCESS","AllocationSize: 2,064,384, EndOfFile: 2,064,384, NumberOfLinks:
1, DeletePending: False, Directory: False"
"21:51:06.3252493","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130317438925230000.xel","FILE LOCKED WITH ONLY READERS","SyncType: SyncTypeCreateSection, PageProtection: "
"21:51:06.3252962","sqlservr.exe","1784","QueryStandardInformationFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130317438925230000.xel","SUCCESS","AllocationSize: 2,064,384, EndOfFile: 2,064,384, NumberOfLinks:
1, DeletePending: False, Directory: False"
"21:51:06.3253930","sqlservr.exe","1784","CreateFileMapping","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130317438925230000.xel","SUCCESS","SyncType: SyncTypeOther"
"21:51:06.9404203","sqlservr.exe","1784","CloseFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130313895108460000.xel","SUCCESS",""
"21:51:06.9405464","sqlservr.exe","1784","CloseFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130314358881960000.xel","SUCCESS",""
"21:51:06.9406615","sqlservr.exe","1784","CloseFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130316898777600000.xel","SUCCESS",""
"21:51:06.9408089","sqlservr.exe","1784","CloseFile","C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012ENT01\MSSQL\Log\system_health_0_130317438925230000.xel","SUCCESS",""

FIM Object Visualizer

Name
Latest Version
FIM Object Visualizer
6.0
Description:
The FIM Object Visualizer is a community script to display and document configurable objects such as Synchronization Rules, Workflows and Management Policy Rules:
Display – because the script has a UI to render your configuration
Document – because you can copy a displayed configuration to the clipboard and save it to a file.
The script is based on the HTA (HTML Application) framework – a framework that enables you to develop scripts that look like Windows applications without the need of writing code in Visual Studio.
Important
To run the script, you need a FIM server with PowerShell installed.
Please read the FIM ScriptBox Read Me First prior to running this script
The FIM Object Visualizer is a customizable community script to display and document configurable objects such as Synchronization Rules, Workflows and Management Policy Rules.
You can use this script to document your current FIM deployment or to provide configuration information in case of a troubleshooting scenario.
The script consist of two main components:
Data Request
Data Display
The script assumes that all PowerShell scripts that are located in the Collection folder are scripts to request object information from your FIM server.
When you start the script, the script code locates all these scripts and adds them to the left list box in the toolbar:
To request new or update existing object information for a specific object type, select the object type you are interested in from the list box, and then click Get Objects.
You can extend the number of supported object types by adding additional PowerShell scripts to the Collection folder.
The second list box lists the object types for which you have already requested object information.
To list the display names for an object type, select the object type from the list box, and then click Get Names:
To display the configuration of an object, click the object's display name:
As mentioned eelier in this post, the FIM Object Visualizer is a community tool.
This means, the objective of this download is to get you started with the process of documenting your deployment; however, I expect that you will modify the components of this script.
For example, if you don't like the "look & feel" of how an object type is rendered, you can easily customize it by modifying the related XSLT file.
If you have questions, comments or even extensions for this script, please respond to this post.
To download this script, use this link.
To get to the FIM ScriptBox, use this link.
Markus Vilcinskas, Technical Content Developer, Microsoft Corporation

The goal of this script is to enable you to create reports of various configurations.
The most recent version supports the following reports:
Active Metaverse Schema
Attribute Flow Precedence
FIMMA Schema
FIM Resource
Management Policy Rules
Metaverse Schema
Provisioning Triple
Schema Object Definitions
Selected Management Agent Attributes
Synchronization Rules
Replication Configuration
Workflows
Below are some examples for what you can do with this script and also abbreviated examples
Active Metaverse Schema - This report shows the inbound population of your metaverse grouped by object type:
Metaverse Active Schema Configuration
Metaverse object type: group
Metaverse Attribute
Type
Multi-valued
Indexed
Import-Flows
membershipLocked
Boolean
no
no
1
membershipAddWorkflow
String (non-indexable)
no
no
1
domain
String (non-indexable)
no
no
1
accountName
String (non-indexable)
no
no
1
member
Reference (DN)
yes
no
1
type
String (non-indexable)
no
no
1
scope
String (non-indexable)
no
no
1
displayName
String (non-indexable)
no
no
1
csObjectID
String (non-indexable)
no
no
1
Replication Configuration - This report shows your active metaverse schema configuration and whether an export attribute flow rule exists on the FIM MA for each metaverse attribute
Metaverse Active Schema and FIMMA EAF Configuration
Metaverse object type: group
Metaverse Attribute
Type
Multi-valued
Indexed
Import-Flows
Replicated
membershipLocked
Boolean
no
no
1
yes
membershipAddWorkflow
String (non-indexable)
no
no
1
yes
domain
String (non-indexable)
no
no
1
yes
accountName
String (non-indexable)
no
no
1
no
member
Reference (DN)
yes
no
1
no
type
String (non-indexable)
no
no
1
yes
scope
String (non-indexable)
no
no
1
yes
displayName
String (non-indexable)
no
no
1
yes
csObjectID
String (non-indexable)
no
no
1
no
Attribute Flow Precedence - This report shows how each attribute in the metaverse is populated and the order:
Metaverse Attribute Flow Configuration for group
accountName, ranked
Management Agent
Object Type
Type
Source Attributes
Fabrikam ADMA
group
sr
sAMAccountName
scope, ranked
Management Agent
Object Type
Type
Source Attributes
Fabrikam ADMA
group
sr
CustomExpression(IIF(Eq(BitAnd(2,groupType),2),"Global",IIF(Eq(BitAnd(4,groupType),4),"DomainLocal","Universal")))
type, ranked
Management Agent
Object Type
Type
Source Attributes
Fabrikam ADMA
group
sr
CustomExpression(IIF(Eq(BitOr(14,groupType),14),"Distribution","Security"))
FIMMA Schema - This report shows the schema definition of your FIMMA:
FIM MA Schema
Object type: Group
Attribute Name
Data Type
Required
Multi-Valued
AccountName
String
no
no
CreatedTime
DateTime
yes
no
Creator
Reference
no
no
DeletedTime
DateTime
no
no
Description
String
no
no
FIM Resource - This report shows the generic representation of an object in the FIM data store:
Export Object - Person
ObjectID
7fb2b853-24f0-4498-9534-4e10589723c4
AccountName
administrator
CreatedTime
1/20/2010 11:33:37 AM
Creator
7fb2b853-24f0-4498-9534-4e10589723c4
DisplayName
administrator
Domain
FABRIKAM
DomainConfiguration
1aff46f4-5511-452d-bcbd-7f7b34b0fe14
MailNickname
administrator
MVObjectID
{1FDD4880-9B68-4509-BAB1-AC34ABF50AC1}
ObjectSID
AQUAAAAAAAUVAAAAVn2Q+4bZuFuYINe99AEAAA==
ObjectType
Person
Markus Vilcinskas, Knowledge Engineer, Microsoft Corporation

Using JSTL variables in JSP or Javascript. Possible ?

Hi All,
Is it possible to share or use the variables which are declared are used by JSTL in JSP expression or scriplet code and in Java Script.
Example:
This Works:
<fmt:set var="test" value="JSTL" />
<fmt:out value="${test}" />
But, this gives error:
<% out.println(test) %>
And passing the value of variable 'test' to Java Script code also gives error.
How to use JSTL variables in JSP and in Javascript ?
Yours,
Sankar.B

By default, JSTL variables are kept in servlet
attributes. Default is to store it in the page
context. You can make it request/session/application
scope as required by an attribute of the set tag.Hi there,
Can anyone advise how to access JSP variables in JSTL?
Can it be done as the same method through request/session/application scope?
Thnks...

PPM - Object Links

Hi All,
The possible mapping for the scenario mentioned below?
1)     Create Portfolio
2)     Create Bucket Structure for the Portfolio
3)     Assign three Initiatives EX. IN1, IN2, IN3.
4)     Create One Item for each Initiative IT1, IT2, IT3.
5)     No Auto PS Project has to be created for this.
6)     Create a PS Project manually with three top WBS Elements with subordinates and linking those WBS Elements
                     each to IT1-W1, IT2-W2, IT3-W3. (By std we can only assign one project definition to the portfolio Item). I
                     assigned this through Object Links
7)     Now the dates, status and Planned/Actual Costs/Budgets should transfer to Portfolio items and also dates/status
                     should also get synchronized between WBS Elements and Items.
How this scenario will be possible. Is there a possiblity to synchronize the dates/status of Object linked WBS element to portfolio Item?
PS: I can create only on PS Project because of Synergy planning.
Rgds
Rambo

Hi John,
valid questions.
re 1 (using 'object links' without DFM): I would think that you need to develop the attribute synchronization more or less from scratch in that case. We have done this for other customers before (e.g. in 4.5 when the DFM functionality was not availble for PS yet). Depending on the exact requirements, the effort can become quite significant.
re 2 (object synchronization structure): this customizing is only relevant when you use DFM. And even then I would rather not change anything there. Basically the customizing activity allows you to use different input/output structure for DFM (that might be interesting when you connect multiple ERP systems with different releases to PPM through DFM). BUt so far I had never the need to change the structures.
I hope this helps you at least a bit (even though it is not a straightforward answer).
Best regards
Thorsten

How to automatically create the custom migration scripts after recreating SSMA project?

How to automatically create the custom data migration scripts after recreating SSMA project?
There is number of tables ( big tables with BLOBS) which I want to set up automatically to be migrated with custom migration scripts (replacing e.g. attribute named "FILE" with "TO_BLOB('') AS FILE" ).
So the question is how to open MB file (I think that it should be standard db of some destktop RDBMS) ?

Hi Roman.Pokrovskij,
According
to your description, we can use SSMA tool to migrate data from one database (including Access, Oracle and so on) to SQL Server via GUI or the scripts. There is an example about migrating Access database to SQL Server via the
custom migration scripts, you can review refer to them.
<?xml version="1.0" encoding="utf-8"?>
<ssma-script-file xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="C:\Microsoft SQL Server Migration Assistant for Access\Schemas\A2SSConsoleScriptSchema.xsd">
<config>
<output-providers>
<output-window suppress-messages="false"
destination="stdout"/>
<upgrade-project action="yes"/>
<data-migration-connection source-use-last-used="true"
target-server="target_1"/>
<progress-reporting enable="false"
report-messages="false"
report-progress="off"/>
<object-overwrite action="skip" />
</output-providers>
</config>
<servers>

<sql-server name="target_1">
<sql-server-authentication>
<server value="$SQLServerName$"/>
<database value="$SQLServerDb$"/>
<user-id value="$SQLServerUsrID$"/>
<password value="$SQLServerPassword$"/>
<encrypt value="true"/>
<trust-server-certificate value="true"/>
</sql-server-authentication>
</sql-server>
</servers>
<script-commands>
<create-new-project project-folder="$project_folder$ "
project-name="$project_name$"
overwrite-if-exists="true"/>
<connect-target-database server="target_1"/>
<load-access-database database-file="$AccessDbFolder$\$AccessDatabaseFile$"/>---

<map-schema source-schema="$AccessDatabase$" sql-server-schema="$SQLServerDb$.dbo" />


<convert-schema object-name="$AccessDatabase$"
object-type="Databases"
conversion-report-overwrite="true"
verbose="true"
report-errors="true" />


<synchronize-target object-name="$SQLServerDb$.dbo"
on-error="fail-script" />


<migrate-data object-name="$AccessDatabase$.Tables"
object-type="category"
report-errors="true"
verbose="true"/>
</script-commands>
</ssma-script-file>
There is a similar scripts about migrating Oracle database to SQL Server, you can use powershell script to automatically run the console for scripts/variable files, saved in the specified folder. For more information, review the following
article.
http://blogs.msdn.com/b/ssma/archive/2010/09/09/performing-database-migration-assessment-using-ssma-console-application.aspx
Regards,
Sofiya Li
Sofiya Li
TechNet Community Support

Using MicroSoft. XMLHttp in jsp or java

Hi,
Can anybody tell me is it good to use
MicroSoft. XMLHttp in jsp and java programs for connectint to remote url and sending xml data..(in java script fucntions)
regards,

By default, JSTL variables are kept in servlet
attributes. Default is to store it in the page
context. You can make it request/session/application
scope as required by an attribute of the set tag.Hi there,
Can anyone advise how to access JSP variables in JSTL?
Can it be done as the same method through request/session/application scope?
Thnks...

Error in SSMA console

Hi ,
I am getting the following vague error when i am executing the script using SSMA console application
SSMAforOracleConsole.exe –s "C:\Users\Arup\Desktop\SQL Server\Console Application\ConversionAndDataMigrationSample_New.xml"
FATALERR invalid argument used.
Any help is highly appreciated

Hi Lydia,
Thanks for your Reply.Pfb the code i am using for my ssma migration.
<?xml version="1.0" encoding="utf-8"?>

<ssma-script-file xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="C:\Microsoft SQL Server Migration Assistant for Oracle\Schemas\O2SSConsoleScriptSchema.xsd">



<config>
<output-providers>

<output-window suppress-messages="false"
destination="file"/>

<upgrade-project action="yes"/>

<upgrade-project action="yes"/>



<data-migration-connection source-use-last-used="false"
target-server="target_1"/>

<progress-reporting enable="false"
report-messages="false"
report-progress="off"/>





<object-overwrite action="skip" />




</output-providers>
</config>


<servers>
<sql-server name="target_1">
<windows-authentication>
<server value="ARUP-MANISHA\SQLEXPRESS"/>
<database value="AdventureWorks2012"/>
<encrypt value="true"/>
<trust-server-certificate value="true"/>
</windows-authentication>
</sql-server>
<oracle name="source_1">
<standard-mode>
<connection-provider value ="OracleClient"/>
<host value="arup-manisha" />
<port value="1521" />
<instance value="XE" />
<user-id value="arup" />
<password value="arup"/>
</standard-mode>
</oracle>
<script-commands>

<create-new-project project-folder="C:\Users\Arup\Documents\SSMAProjects"
project-name="SqlMigration5"
overwrite-if-exists="true"
project-type="sql-server-2012"
/>


<connect-source-database server="source_1" />


<connect-target-database server="target_1" />


<map-schema source-schema="arup"
sql-server-schema="arup.dbo" />









<convert-schema object-name="$OracleSchemaName$"
object-type="Schemas"
write-summary-report-to="$SummaryReports$"
verbose="true"
report-errors="true"
conversion-report-folder="$ConvertARReportsFolder$"
conversion-report-overwrite="true" />










<synchronize-target object-name="arup.dbo"
on-error="fail-script"
report-errors-to="$SynchronizationReports$" />
















<migrate-data object-name="arup.Tables"
object-type="category"
write-summary-report-to="$SummaryReports$"
report-errors="true"
verbose="true" />




<save-project />

<close-project />
</script-commands>
</ssma-script-file>

Cannot instantly delete/edit .exe files.

Hello,
Problem is that my .exe files are held up by something invisible and only edit seeming instantly working is renaming.
Firstly - i'm the only one using this laptop, i'm admin, running programs as admin and this still happens. Used all available Avast virus scans - found some malware, but didn't remove the problem.
When i try to shift-delete them it takes 10 to 60 seconds and a bunch of retries for it to actually disappear... OK - i could live with it... But true problem is when trying to replace with some newer version - windows explorer says "used by other program",
DevC++ says "Permission denied", Code::Blocks - "Permission denied", MS Visual C++ 2010 Express - "cannot open file"... This is extremely irritating when trying to program and debug...
Using ASUS K55VD laptop i5 version with Win7 Pro.
Tried stripping all non-essential or less trusted processes - didn't help.
Tried disabling a bunch of services - didn't help.
PLEASE HELP! ^^
Don't want to re-install windows - have too many programs on C disk that i don't really want to loose/re-install...

Wow that procmon creates huge logs fast...
Checked antivirus - even when fully disabled it doesn't help.
Now sifting trough procmon logs: A LOT of registry accesses by svchost.exe to HKCR\CLSID\{54D8502C-527D-43F7-A506-A9DA075E229C} areas like: InprocServer32\(Default); InprocServer32; InProcServer32
Edit: OK definitely didn't study enough yet... ^^ at least of what's up with these accesses. Could You give any pointers of what to look for?
Well this problem is not present in safe mode, but not a fan of going into safe mode everytime i need to program something.
Edit#2: now a bunch of this happens: Explorer.EXE CreateFile C:\users\edgetech\appdata\local\microsoft\office\groove\user\GFSConfig.xml PATH NOT FOUND (i deleted folder to see maybe it'd stop)
Edit #3: What happens when i try to manually overwrite:
22:44:08,7473442 Explorer.EXE 1656 CreateFile C:\ SUCCESS Desired Access: Read Data/List Directory, Read Attributes, Synchronize, Dis, Options: Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
22:44:08,7473992 Explorer.EXE 1656 FileSystemControl C:\ INVALID DEVICE REQUEST Control: FSCTL_LMR_QUERY_DEBUG_INFO
22:44:08,7474185 Explorer.EXE 1656 QueryDirectory C:\Dev-Cpp SUCCESS Filter: Dev-Cpp, 1: Dev-Cpp
22:44:08,7474595 Explorer.EXE 1656 CloseFile C:\ SUCCESS
22:44:08,7475646 Explorer.EXE 1656 CreateFile C:\Dev-Cpp SUCCESS Desired Access: Read Data/List Directory, Read Attributes, Synchronize, Dis, Options: Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
22:44:08,7476020 Explorer.EXE 1656 FileSystemControl C:\Dev-Cpp INVALID DEVICE REQUEST Control: FSCTL_LMR_QUERY_DEBUG_INFO
22:44:08,7476184 Explorer.EXE 1656 QueryDirectory C:\Dev-Cpp\edgetech SUCCESS Filter: edgetech, 1: edgetech
22:44:08,7476484 Explorer.EXE 1656 CloseFile C:\Dev-Cpp SUCCESS
22:44:08,7578214 Explorer.EXE 1656 CreateFile C:\Dev-Cpp\edgetech IS DIRECTORY Desired Access: Generic Read/Write, Dis, Options: No Buffering, Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: None, AllocationSize: n/a
22:44:08,7579011 Explorer.EXE 1656 CreateFile C:\Dev-Cpp\edgetech IS DIRECTORY Desired Access: Generic Read, Dis, Options: No Buffering, Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, Delete, AllocationSize: n/a
22:44:08,7579536 Explorer.EXE 1656 CreateFile C:\Dev-Cpp\edgetech IS DIRECTORY Desired Access: Read Attributes, Synchronize, Dis, Options: No Buffering, Synchronous IO Non-Alert, Non-Directory File, Attributes: N, ShareMode: Read, Write, Delete, AllocationSize: n/a
22:44:08,7610124 Explorer.EXE 1656 QueryStandardInformationFile C:\Users\edgetech\AppData\Local\Microsoft\Windows\Explorer\thumbcache_idx.db SUCCESS AllocationSize: 28.672, EndOfFile: 25.880, NumberOfLinks: 1, DeletePending: False, Directory: False
22:44:09,4927768 Explorer.EXE 1656 CreateFile C:\Dev-Cpp\edgetech\bugfixing.exe SHARING VIOLATION Desired Access: Generic Read/Write, Write DAC, Dis, Options: Sequential Access, Synchronous IO Non-Alert, Non-Directory File, Attributes: A, ShareMode: None, AllocationSize: 15.839
22:44:09,4932046 Explorer.EXE 1656 CreateFile C:\Dev-Cpp\edgetech\bugfixing.exe SHARING VIOLATION Desired Access: Generic Read/Write, Write DAC, Dis, Options: Sequential Access, Synchronous IO Non-Alert, Non-Directory File, Attributes: A, ShareMode: Read, Write, AllocationSize: 15.839
22:44:09,4934562 Explorer.EXE 1656 CreateFile C:\Dev-Cpp\edgetech SUCCESS Desired Access: Read Data/List Directory, Read Attributes, Synchronize, Dis, Options: Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
22:44:09,4935453 Explorer.EXE 1656 FileSystemControl C:\Dev-Cpp\edgetech INVALID DEVICE REQUEST Control: FSCTL_LMR_QUERY_DEBUG_INFO
22:44:09,4935819 Explorer.EXE 1656 QueryDirectory C:\Dev-Cpp\edgetech\bugfixing.exe SUCCESS Filter: bugfixing.exe, 1: bugfixing.exe
22:44:09,4936603 Explorer.EXE 1656 CloseFile C:\Dev-Cpp\edgetech SUCCESS
Edit #4: Again tries SAME copy action but got different results (?):
22:52:00,9589512 DllHost.exe 1744 CreateFile C:\Dev-Cpp\edgetech\bugfixing.exe DELETE PENDING Desired Access: Generic Read/Write, Write DAC, Dis, Options: Sequential Access, Synchronous IO Non-Alert, Non-Directory File, Attributes: A, ShareMode: None, AllocationSize: 15.839
22:52:00,9593026 DllHost.exe 1744 CreateFile C:\Dev-Cpp\edgetech\bugfixing.exe DELETE PENDING Desired Access: Read Attributes, Dis, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
22:52:00,9594089 DllHost.exe 1744 CreateFile C:\Dev-Cpp\edgetech\bugfixing.exe DELETE PENDING Desired Access: Read Attributes, Dis, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
22:52:00,9595042 DllHost.exe 1744 CreateFile C:\Dev-Cpp\edgetech\bugfixing.exe DELETE PENDING Desired Access: Read Attributes, Dis, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
22:52:00,9610752 DllHost.exe 1744 CreateFile C:\ SUCCESS Desired Access: Read Data/List Directory, Read Attributes, Synchronize, Dis, Options: Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
22:52:00,9611298 DllHost.exe 1744 FileSystemControl C:\ INVALID DEVICE REQUEST Control: FSCTL_LMR_QUERY_DEBUG_INFO
22:52:00,9611516 DllHost.exe 1744 QueryDirectory C:\Dev-Cpp SUCCESS Filter: Dev-Cpp, 1: Dev-Cpp
22:52:00,9611980 DllHost.exe 1744 CloseFile C:\ SUCCESS
22:52:00,9613063 DllHost.exe 1744 CreateFile C:\Dev-Cpp SUCCESS Desired Access: Read Data/List Directory, Read Attributes, Synchronize, Dis, Options: Synchronous IO Non-Alert, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
22:52:00,9613466 DllHost.exe 1744 FileSystemControl C:\Dev-Cpp INVALID DEVICE REQUEST Control: FSCTL_LMR_QUERY_DEBUG_INFO
22:52:00,9613654 DllHost.exe 1744 QueryDirectory C:\Dev-Cpp\edgetech SUCCESS Filter: edgetech, 1: edgetech
22:52:00,9613999 DllHost.exe 1744 CloseFile C:\Dev-Cpp SUCCESS
22:52:00,9644870 DllHost.exe 1744 CreateFile C:\Dev-Cpp\edgetech SUCCESS Desired Access: Read Attributes, Read Control, Dis, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened
22:52:00,9645285 DllHost.exe 1744 QuerySecurityFile C:\Dev-Cpp\edgetech BUFFER OVERFLOW Information: Owner
22:52:00,9645503 DllHost.exe 1744 QuerySecurityFile C:\Dev-Cpp\edgetech SUCCESS Information: Owner
22:52:00,9645687 DllHost.exe 1744 CloseFile C:\Dev-Cpp\edgetech SUCCESS
22:52:00,9687248 DllHost.exe 1744 QueryStandardInformationFile C:\Users\edgetech\AppData\Local\Microsoft\Windows\Explorer\thumbcache_idx.db SUCCESS AllocationSize: 28.672, EndOfFile: 25.880, NumberOfLinks: 1, DeletePending: False, Directory: False
At this point i'm definitely thinking windows re-install would be easier/faster. Gonna take a break for today and check more tomorrow with a clear head...

Contradicting info about resources accessing

Hello,
I am a servlet newbie. I have gone through a lot of posts
in the archives on accessing resources and now I am confused
more than ever. The problem is that my guestbook servlet's doPost() will
read and write a file on the same server.
Now some posts say it should be rare that the servlet is called by two users at the same
time and you shouldn't be worried about file locking. While other posts
imply I need to make the servlet a single Thread servlet for this to work.
And yet another group of posts suggest I could use normal servlet and
synchronize the methods that read and write.
So what exactly is the way to go about read and write one file?
Any hints would be much appreciated!

Now some posts say it should be rare that the servlet
is called by two users at the same
time and you shouldn't be worried about file locking.Very dangerous. If your app allows concurrent users, you must deal with concurrency issues.
While other posts
imply I need to make the servlet a single Thread
servlet for this to work.If every user's session writes to the same file, then a single thread servlet will not solve the problem. You'll just have multiple instances of a servlet writing to one file instead of multiple threads of the same instance writing to one file.
And yet another group of posts suggest I could use
normal servlet and
synchronize the methods that read and write. Sounds like the safest approach. If the same flat file is used by all, then synchronization is necessary. Create a class that handles all i/o to your file and add the synchronization code there.

Servlet attribute synchronization

Similar Messages

Maybe you are looking for