Oracle database read and write?
I want to see on the basis of the Oracle database table to read and write rates.How can I see
A table can exists across multiple tablespaces. A tablespace can consists of several data files. Data files can be across multiple ASM diskgroups. An ASM diskgroup can consists of multiple LUNs. A LUN can comprise of several physical disks on the storage system.
So what EXACTLY is the problem?
What will a magic metric of "20 writes/25 reads" on the EMP table tell you? What would this mean and how would these numbers be applied to make the system better?
In other words - you have come up with a solution that needs write/read rate on a table. You have not told us what problem this solution of yours will address. We need to know the problem - as a solution is only ever as good as the accuracy and detail of the problem description.
Similar Messages
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Hello,
I'm using Exchange 2010 in my company with around 200 mailbox.
The exchange database are stored in our SAN network, drive is mount by Iscsi on the 2008 r2 sp1
Problem is, the network traffic is huge. We have one link special for this server (thats a virtual server on Hyper-V) and the network link is always at 70 Mbps and goes sometimes up to 130 Mbps (10 Gb/s link)
I do not know why the link is use so much and i try to know why ?
Used Exmon to see mailbox of each user, nothing special appear.
Thanks for your help.Hi,
There are 2 database, one with like 140 users, and the other one with 60 user.
Role installed on my server : IIS, AD, File Services. (server is not a domain controler).
[PS] C:\Windows\system32>get-ThrottlingPolicy
RunspaceId : *An ID*
IsDefault : True
AnonymousMaxConcurrency : 1
AnonymousPercentTimeInAD :
AnonymousPercentTimeInCAS :
AnonymousPercentTimeInMailboxRPC :
EASMaxConcurrency : 10
EASPercentTimeInAD :
EASPercentTimeInCAS :
EASPercentTimeInMailboxRPC :
EASMaxDevices : 10
EASMaxDeviceDeletesPerMonth :
EWSMaxConcurrency : 10
EWSPercentTimeInAD : 50
EWSPercentTimeInCAS : 90
EWSPercentTimeInMailboxRPC : 60
EWSMaxSubscriptions : 5000
EWSFastSearchTimeoutInSeconds : 60
EWSFindCountLimit : 1000
IMAPMaxConcurrency :
IMAPPercentTimeInAD :
IMAPPercentTimeInCAS :
IMAPPercentTimeInMailboxRPC :
OWAMaxConcurrency : 5
OWAPercentTimeInAD : 30
OWAPercentTimeInCAS : 150
OWAPercentTimeInMailboxRPC : 150
POPMaxConcurrency : 20
POPPercentTimeInAD :
POPPercentTimeInCAS :
POPPercentTimeInMailboxRPC :
PowerShellMaxConcurrency : 18
PowerShellMaxTenantConcurrency :
PowerShellMaxCmdlets :
PowerShellMaxCmdletsTimePeriod :
ExchangeMaxCmdlets :
PowerShellMaxCmdletQueueDepth :
PowerShellMaxDestructiveCmdlets :
PowerShellMaxDestructiveCmdletsTimePeriod :
RCAMaxConcurrency : 20
RCAPercentTimeInAD : 5
RCAPercentTimeInCAS : 205
RCAPercentTimeInMailboxRPC : 200
CPAMaxConcurrency : 20
CPAPercentTimeInCAS : 205
CPAPercentTimeInMailboxRPC : 200
MessageRateLimit :
RecipientRateLimit :
ForwardeeLimit :
CPUStartPercent : 75
AdminDisplayName :
ExchangeVersion : 0.10 (14.0.100.0)
Name : DefaultThrottlingPolicy_5fa5b9e4-a13b-4cf6-93a9-1eef6db05a03
DistinguishedName : CN=DefaultThrottlingPolicy_5fa5b9e4-a13b-4cf6-93a9-1eef6db05a03,CN=Global S
ettings,CN=*DOMAIN*,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=*DOMAIN*
Identity : DefaultThrottlingPolicy_5fa5b9e4-a13b-4cf6-93a9-1eef6db05a03
Guid : 6aa37e30-cac2-40fb-8d42-acafdcebb54e
ObjectCategory : *DOMAIN*/Configuration/Schema/ms-Exch-Throttling-Policy
ObjectClass : {top, msExchGenericPolicy, msExchThrottlingPolicy}
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WhenCreated : 07/07/2011 14:26:22
WhenChangedUTC : 07/07/2011 12:26:28
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OrganizationId :
OriginatingServer : *DOMAIN CONTROLER*.*DOMAIN*
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JSP read and write data in MS-SQL database
I am new to JSP. I need to write JSP page to read and write data in MS-SQL Database. I wonder if it is different from other database. I couldn't find useful pointers in the web. Please advise. Thanks!!
Sure, SQL Server is different from Oracle is different from MySQL is different from...
But all of them can be accessed using JDBC:
http://java.sun.com/docs/books/tutorial/jdbc/
Maybe you should learn about that for starters.
You can use SQL tags from JSTL in your JSPs. I'd recommend JSTL highly. No scriptlet code that way. - MOD -
Best Practice to Atomic Read and Write a Field In Database
I am from Java Desktop Application background. May I know what is the best practice in J2EE, to atomic read and write a field in database. Currently, here is what I did
// In Servlet.
synchronized(private_static_final_object)
int counter = read_counter_from_database();
counter++;
write_counter_back_to_database(counter);
}However, I suspect the above method will work all the time.
As my observation is that, if I have several web request at the same time, I am executing code within single instance of servlet, using different thread. The above method shall work, as different thread web request, are all referring to same "private_static_final_object"
However, my guess is "single instance of servlet" is not guarantee. As after some time span, the previous instance of servlet may destroy, with another new instance of servlet being created.
I also came across [http://code.google.com/appengine/docs/java/datastore/transactions.html|http://code.google.com/appengine/docs/java/datastore/transactions.html] in JDO. I am not sure whether they are going to solve the problem.
// In Servlet.
Transaction tx = pm.currentTransaction();
tx.begin();
int counter = read_counter_from_database(); // Line 1
counter++; // Line 2
write_counter_back_to_database(counter); // Line 3
tx.commit();Is the code guarantee only when Thread A finish execute Line 1 till Line 3 atomically, only Thread B can continue to execute Line 1 till Line 3 atomically?
As I do not wish the following situation happen.
(1) Thread A read counter from Database as 0
(2) Thread A increment counter to 1
(3) Thread B read counter from Database as 0
(4) Thread A write counter as 1 to database
(5) Thread B increment counter to 1
(6) Thread B write counter as 1 to database
What I wish is
(1) Thread A read counter from Database as 0
(2) Thread A increment counter to 1
(4) Thread A write counter as 1 to database
(3) Thread B read counter from Database as 1
(5) Thread B increment counter to 2
(6) Thread B write counter as 2 to database
Thanks you.
Edited by: yccheok on Oct 27, 2009 8:39 PMThis is my understanding of the issue (you should research it further on you own to get a better understanding):
I suggest you use local variables (ie, defined within a function), and keep away from static variables. Those local variables are thread safe. If you call functions within functions, its still thread safe. If you read or write to one record in a database using sql, its thread safe (you dont need a transaction). If you read/write to multiple tables and/or records, you probably need a transaction. Servlets are thread safe. You usually dont need the 'synchronized' word anywhere unless you have a function updating/reading a static variable and therefore want to ensure only one user is accessing the static varible at a time. Also do so if you are writing to some resource (such as a file, a variable in applicaton scope, session scope, or resource that everyone uses such as email server). You dont want more than one person at a time to write to it). Note the database is one of of those resources that is handled by transactions rather than the the synchronized keyword (the synchronized keyword is applied to your application only (not other applications that someone is running), whereas the transaction ensures all applications are locked out while you update those records in the database).
By the way, if you have a static variable, you should have one and only one function (synchronized) that updates it that everyone uses. If you have more than one synchronized function, that updates it, its probably not thread safe.
An example of a static variable you would use is a Datasource object (to obtain your database connections). You only need one connection pool in your application and you access it via the datasource variable.
If you're unsure your code is thread safe, you can create two seperate threads that call the same block of functions repeatedly to ensure it works as expected. -
Using the Borland Database Engine to read AND write SHARED Paradox Database Tables
I need to read and write Paradox database tables with a C# AT THE SAME TIME AS people using the Paradox tables with legacy Paradox programs interactively.
I think the only way to do that reliably without corrupting the tables is to use the BDE Borland Database Engine.
Does anyone know how to do that? I found this c++ program... But I don't know how to integrate this into c#
http://www.codeproject.com/KB/database/bdedatabase.aspx
Is there another way to do this? Again, most important, I don't want to corrupt the paradox database.
I can read the paradox records all day long, that is no problem, it is updating at the same time as the legacy program users..
I also know that the whole thing needs to be updated, but that can not be done overnight.
Thanks in advance
DaveBeing pretty new to programming, I am trying just to read info from Paradox tables with C#. Info is actively being updated from another program at the same time. The program I am trying to write only needs to read data. The other program does use the BDE,
so it is already present running on the computer.
I've been looking at code but just haven't found quite the right combination.
Thanks. Any help is greatly appreciated. -
How to share files in a network and allow read-and-write to a specific computer only?
I have several computers in my network, and I want to share a folder and allow read-and-write from computer A to Computer B only, and omit computer C. How do I do that? Thanks.
Thanks for the suggestion. I like this approach as Java is more familiar to me than other languages.
Our DBA is out of touch today, so I could not grant the javauserpriv to my database user. I tried to run the script anyway in the chance that my user had the privs, and it seemed to have hung. I am now combing Oracle's site for more documentation so I can write some tests to see if I can get a basic Java object working. Under what heading would I find this?
ajt -
Read and write a item's value in running Form.
Hi everybody,
Could you help me?
I have a table name QUANTITY(store in Oracle database server), this table have 2 filed: Model name and Quantity
I created a oracle form(Store in oracle application server) to show Quantity. I running this form in a client.
Now i want read and write QUANTITY of one Model to text file in client. It is difficult to me!
Please help me,Try something like this...
PROCEDURE load_data IS
outFile CLIENT_TEXT_IO.FILE_TYPE;
linebuf varchar2(1000);
X1 VARCHAR2(20) := ' ';
X2 VARCHAR2(15);
File_Not_Found EXCEPTION;
cursor c1 is
select col1, col2 from QUANTITY;
BEGIN
outFile := CLIENT_TEXT_IO.FOPEN('c:\tmp\Outputfile.txt','w');
if CLIENT_TEXT_IO.IS_OPEN(outFile) then
open c1;
LOOP
FETCH C1 INTO c1_rec;
EXIT WHEN C1%NOTFOUND;
X1 := c1_rec.col1;
x7 := c1_rec.col2;
linebuf := X1|| ' ' ||X2;
CLIENT_TEXT_IO.put(outFile,linebuf);
CLIENT_TEXT_IO.NEW_LINE(outfile);
END LOOP;
close c1;
end if;
CLIENT_TEXT_IO.FCLOSE(outfile);
END;Hope this helps,
Charan
Edited by: Charan on Oct 2, 2011 4:09 PM -
View to find Physical read and Write per hour
HI,
My oracle database is running with 11.2.0.3 and we are analysing the database. we would like to understand what the average load time per hour is for a database under normal circumstances e.g. 5 TB /Hr ?
What I want to know is, Is it possible to find the amount physical reads and writes happened per hour basis on database. Is there any view to find this ?
Thanks,
Kesav.1e36fe40-5d07-412e-8ed2-704c647ed7a7 wrote:
HI,
My oracle database is running with 11.2.0.3 and we are analysing the database. we would like to understand what the average load time per hour is for a database under normal circumstances e.g. 5 TB /Hr ?
What I want to know is, Is it possible to find the amount physical reads and writes happened per hour basis on database. Is there any view to find this ?
Thanks,
Kesav.
number of READ operations?
number of bytes read?
SQL> desc v$IOSTAT_FILE
Name Null? Type
FILE_NO NUMBER
FILETYPE_ID NUMBER
FILETYPE_NAME VARCHAR2(28)
SMALL_READ_MEGABYTES NUMBER
SMALL_WRITE_MEGABYTES NUMBER
LARGE_READ_MEGABYTES NUMBER
LARGE_WRITE_MEGABYTES NUMBER
SMALL_READ_REQS NUMBER
SMALL_WRITE_REQS NUMBER
SMALL_SYNC_READ_REQS NUMBER
LARGE_READ_REQS NUMBER
LARGE_WRITE_REQS NUMBER
SMALL_READ_SERVICETIME NUMBER
SMALL_WRITE_SERVICETIME NUMBER
SMALL_SYNC_READ_LATENCY NUMBER
LARGE_READ_SERVICETIME NUMBER
LARGE_WRITE_SERVICETIME NUMBER
ASYNCH_IO VARCHAR2(9)
ACCESS_METHOD VARCHAR2(11)
RETRIES_ON_ERROR NUMBER
SQL> -
Read and write data from content repository .
Hi All,
We are using content repository to store some document and images on web center server .
So we have created/setup a content repository on web center .
Please proivde me some documnet /wiki page to get some idea how can i read and write date in
content repository .
You are most welocme to provide some idea /suggestion .
Thanks,
Arun.Have you already configured webcenter spaces so it can use content server?
Have you installed the content server seperatly from webcenter or as a part of the webcenter installation?
Check if you have the webcenter spaces component installed in content server because without i don't think it will work...
If you already have configured UCM to work with spaces it's quiet easy.
From your groupspace, open the settings page of your groupspace. Go to the services tab. In the left hand side you can enable the documents services. WHen you have done that, you are able to add the document services taskflows to your pages. Just go to a page in your pagegroup and edit it. Open the resource catalog and you will find some extra taskflows you can add.
If you haven't configured UCM and webcenter to work together, here some steps that will help you:
* Integrating UCM with Spaces
* They both need to use the same LDAP store.
* Since there is no LDAP server available, we choose for embedded WLS LDAP.
* Integrating the ucm into apache
* Stop UCM
* In /oracle/product/wls10320/WebCenter/ucm/config/config.cfg, check the SocketHostAddressSecurityFilter to contain 127.0.0.1
* Add the SocketHostAddressSecurityFilter to /oracle/product/wls10320/WebCenter/ucm/admin/bin/intradoc.cfg
* Add to /oracle/product/wls10320/WebTier/instances/instance1/config/OHS/ohs1/httpd.conf
include /oracle/product/wls10320/WebCenter/ucm/data/users/apache22/apache.conf
* Change the mod_wl_ohs.conf file to
<IfModule weblogic_module>
WebLogicHost localhost
WebLogicPort 7001
Debug ON
WLLogFile /tmp/weblogic.log
</IfModule>
<Location /webcenter>
SetHandler weblogic-handler
WebLogicCluster localhost:8888
</Location>
<Location /webcenterhelp>
SetHandler weblogic-handler
WebLogicCluster localhost:8888
</Location>
<Location /owc_discussions>
SetHandler weblogic-handler
WebLogicCluster localhost:8890
</Location>
<Location /em>
SetHandler weblogic-handler
</Location>
<Location /console>
SetHandler weblogic-handler
</Location>
<Location /consolehelp>
SetHandler weblogic-handler
</Location>
* Restart UCM & WebTier
* Test URL: http://yourServer:7777/idc
* Configure the Identity Store for UCM & WebCenter
* Set the password for the embedded ldap in WLS
Console => Domain Name => Security tab => Embedded LDAP tab => reset credentials
* Restart AdminServer
* Stop UCM
* Add the following to /oracle/product/wls10320/WebCenter/ucm/config/jps-config.xml
<serviceInstance name="idstore.oid" provider="idstore.ldap.provider">
<property name="subscriber.name" value="ou=myrealm,dc=webcenter_domain"/>
<property name="idstore.type" value="WLS_OVD"/>
<property name="security.principal.key" value="ldap.credential"/>
<property name="security.principal.alias" value="JPS"/>
<property name="ldap.url" value="ldap://yourServer:7001"/>
<extendedProperty>
<name>user.search.bases</name>
<values><value>ou=people,ou=myrealm,dc=webcenter_domain</value></values>
</extendedProperty>
<extendedProperty>
<name>group.search.bases</name>
<values><value>ou=groups,ou=myrealm,dc=webcenter_domain</value></values>
</extendedProperty>
<property name="username.attr" value="uid"/>
<property name="user.login.attr" value="uid"/>
<property name="groupname.attr" value="cn"/>
</serviceInstance>
* In the same file, change the serviceInstanceRef ref="idstore.ldap" to "idstore.oid"
* Go to /oracle/product/wls10320/WebCenter/ucm/custom/FustionLibraries/tools
* ./run_credtool.sh
Alias: default
Key: default
User Name: cn=Admin
Password: weblogic123
JPS Config: default
* Start UCM
* Check Provider:
* Go to http://yourServer:7777/idc
* Login : sysadmin/idc
* Administration -> Providers
* jpsuser should be good
* When a ldapuser exist, disable it!!
* Configuring UCM for content search
* Change the file /products/WebCenter11gR1/WebCenter/ucm/config/config.cfg
SearchIndexerEngineName=DATABASE.METADATA to SearchIndexerEngineName=DATABASE.FULLTEXT
* Restart UCM server
* Run the /products/WebCenter11gR1/WebCenter/ucm/database/oracle/admin/batchsnippet.sql in the wcbepsc_ocserver schema
* Restart UCM server
* Open the /products/WebCenter11gR1/WebCenter/ucm/bin/RepositoryManager (sysadmin/idc)
* Recreate the indexes
* Registering UCM with WebCenter
* Go to http://yourServer:7777/em
* Login with weblogic/weblogicPassword
* Go to WebCenter - WebCenter Spaces - webcenter (WLS_Spaces)
* From the top menu, select Settings - Service Configuration
* Select Content Repository
* Add
Connection Name: ucm_connection
Repository Type: Oracle Content Server
Active Connection: checked
Administrator User Name: sysadmin
Root Folder: /WebCenterSpaces
Application Name: Spaces
CIS Socket Type: Socket
Server Host: localhost
Server Port: 4444
Authentication Method: Identity Propagation
* Restart WLS_Spaces
* Test the connection by creating a new group space and upload a document to the document page of this group spaceHope this helps. -
Hot Data Block with concurrent read and write
Hi,
This is from ADDM Report.
FINDING 8: 2% impact (159 seconds)
A hot data block with concurrent read and write activity was found. The block
belongs to segment "SIEBEL.S_SRM_REQUEST" and is block 8138 in file 7.
RECOMMENDATION 1: Application Analysis, 2% benefit (159 seconds)
ACTION: Investigate application logic to find the cause of high
concurrent read and write activity to the data present in this block.
RELEVANT OBJECT: database block with object# 73759, file# 7 and
block# 8138
RATIONALE: The SQL statement with SQL_ID "f1dhpm6pnmmzq" spent
significant time on "buffer busy" waits for the hot block.
RELEVANT OBJECT: SQL statement with SQL_ID f1dhpm6pnmmzq
DELETE FROM SIEBEL.S_SRM_REQUEST WHERE ROW_ID = :B1
RECOMMENDATION 2: Schema, 2% benefit (159 seconds)
ACTION: Consider rebuilding the TABLE "SIEBEL.S_SRM_REQUEST" with object
id 73759 using a higher value for PCTFREE.
RELEVANT OBJECT: database object with id 73759
SYMPTOMS THAT LED TO THE FINDING:
SYMPTOM: Wait class "Concurrency" was consuming significant database
time. (4% impact [322 seconds])
what does it mean by hot block with concurrent read and write??
is rebuilding the table solves the problem as per addm report?Hi,
You must suffer from buffer busy waits.
When a buffer is updated, the buffer will be latched, and other sessions can not read it or write it.
You must have multiple sessions reading and writing that one block.
Recommendation 2 results in fewer records per block, so less chance multiple sessions are modifying and reading 1 block. It will also result in a bigger table.
The recommendation doesn't make sense for tablespaces with segment storage management auto, as for those tablespaces pctfree does not apply.
Buffer busy waits will also occur if the blocksize of your database is set too high.
Sybrand Bakker
Senior Oracle DBA -
Difference in select for update of - in Oracle Database 10g and 11g
Hi, I found out that Oracle Database 10g and 11g treat the following PL/SQL block differently (I am using scott schema for convenience):
DECLARE
v_ename bonus.ename%TYPE;
BEGIN
SELECT b.ename
INTO v_ename
FROM bonus b
JOIN emp e ON b.ename = e.ename
JOIN dept d ON d.deptno = e.deptno
WHERE b.ename = 'Scott'
FOR UPDATE OF b.ename;
END;
/While in 10g (10.2) this code ends successfully (well NO_DATA_FOUND exception is raised but that is expected), in 11g (11.2) it raises exception "column ambiguously defined". And that is definitely not expected. It seems like it does not take into account table alias because I found out that when I change the column in FOR UPDATE OF e.empno (also does not work) to e.mgr (which is unique) it starts working. So is this some error in 11g? Any thoughts?
Edited by: Libor Nenadál on 29.4.2010 21:46
It seems that my question was answered here - http://stackoverflow.com/questions/2736426/difference-in-select-for-update-of-in-oracle-database-10g-and-11gThe behaviour seems like it really is a bug and can be avoided using non-ANSI syntax. (It makes me wonder why Oracle maintains two query languages while dumb me thinks that this is just a preprocessor matter and query engine could be the same).
-
How to read and write data from json file from windows phone7 app
Hi
I am developing wp7 app for the use of students my questions are
How can i write a code to read and write the json/text file for the wp7.
I am using windows 7 OS, VS 2010 Edition.
This is my code below:
xaml:
<Grid>
<TextBlock Height="45" HorizontalAlignment="Left" Margin="7,18,0,550" Name="textBlock1" Text="Full
Name: " />
<TextBox Width="350" Height="70" HorizontalAlignment="Left" Margin="108,1,0,0" Name="txtName"
Text="Enter your full name" VerticalAlignment="Top" />
<TextBlock Height="45" HorizontalAlignment="Left" Margin="6,75,0,0" Name="textBlock2" Text="Contact
No: " VerticalAlignment="Top" />
<TextBox Width="350" Height="70" HorizontalAlignment="Left" Margin="108,61,0,480" Name="txtContact"
Text="Enter your contact number" MaxLength="10" />
<Button Content="Register" Height="72" HorizontalAlignment="Left" Margin="10,330,0,0" Name="btnRegister"
VerticalAlignment="Top" Width="190" Click="btnRegister_Click" />
</Grid>
xaml.cs:
private void btnRegister_Click(object sender, RoutedEventArgs e)
string name, contact;
name = txtName.Text;
contact = txtContact.Text;
try
if (name != "" && contact != "")
string msg = name + " " + contact;
MessageBox.Show(msg);
Student stud = new Student
Name= name,
Contact = contact,
string jsonString = JsonConvert.SerializeObject(stud);
MessageBox.Show(jsonString);
else
MessageBox.Show("Input Proper Information", MessageBoxButton.OK);
catch (Exception ex)
MessageBox.Show(ex.Message);
I have download NewtonSoft.json version 5.0.8.
So, I am able to convert input data into json format, but how can I able to write and read this data from a json/text file.
How can I do?
Thank you in adv and please, reply soon.We don't have many samples left for Windows Phone 7 + Azure, the closest one to what you want to do is probably:
Using Local Storage with OData on Windows Phone To Reduce Network Bandwidth
this sample uses the local database feature: 'LINQ to SQL', available to Windows Phone 7.1 and 8.0 Silverlight applications, instead of simple file storage but even if you choose to stick with simple file storage I believe you should be able to adapt the
networking related portions of the sample to your particular application.
Eric Fleck, Windows Store and Windows Phone Developer Support. If you would like to provide feedback or suggestions for future improvements to the Windows Phone SDK please go to http://wpdev.uservoice.com/ where you can post your suggestions and/or cast
your votes for existing suggestions. -
ITunes Library on an Airport Disk? Read and write from multiple Macs?
OK, I've scoured the forums for an answer to this, but haven't found anything definitive. Apologies if I've missed the answer, but here's what I want to know:
I have an iMac as a primary computer, plus a Mac Mini hooked up to my entertainment system, and my girlfriend's powerbook in the house too. There seem to be two main iTunes options: either constantly try to keep all three iTunes libraries synchronised by running around importing files, etc.; or just keep one library, and share it over the network.
Right now, I am keeping my iTunes library on my iMac and sharing it with the Mac Mini and the powerbook. If anyone wants to add music (or other content) to the library, it has to be through the iMac. Obviously the iMac has to be on for any other computer to access the shared library.
I want to try to make things simpler by having a single "network" iTunes library that all computers to be able to share (read AND write). I envisage having this "iTunes Server" on an external HD connected to my Airport Extreme as an Airport Disk. If I move the entire contents of ~/music/iTunes (including artwork, library files, etc) to this central location, will the three Macs be able to deal with this, ie can multiple computers share an iTunes library database on an airdisk? Will I be able to stream content from this library to all three computers? Will I be able to import new music into the library from any one of the three computers?I am having a very similar problem. I have all of my music saved on a large external disk connected to my airport. I would like to be able to just play what i want from this disk, but i don't like having to download every track i want to listen to. I still want to be able to bring my laptop with me and have some music so i don't want to make this external disk my library folder. Is there a way to play it on my computer similar to a shared library on another computer? Am i asking to much out of apple?
-
Read and write a .CSV file contains cirillic characters issue
Hi guys,
I am a developer of a web application project which uses Oracle Fusion Middleware technologies. We use JDeveloper 11.1.1.4.0 as development IDE.
I have a requirement to get a .csv file from WLS to application running machine. I used a downloadActinLinsener in front end .jspx in order to do that.
I use OpenCSV library to read and write .csv files.
Here is my code for read and write the .csv file,
public void dwdFile(FacesContext facesContext, OutputStream out) {
System.out.println("started");
String [] nextLine;
try {
FileInputStream fstream1 = new FileInputStream("Downloads/filetoberead.CSV");
DataInputStream in = new DataInputStream(fstream1);
BufferedReader br = new BufferedReader(new InputStreamReader(in,"UTF-8"));
CSVReader reader = new CSVReader(br,'\n');
//CSVReader reader = new CSVReader(new FileReader("Downloads/ACTIVITY_LOG_22-JAN-13.csv"),'\n');
List<String> list=new ArrayList();
while ((nextLine = reader.readNext()) != null) {
if(nextLine !=null){
for(String s:nextLine){
list.add(s);
System.out.println("list size ; "+list.size());
OutputStreamWriter w = new OutputStreamWriter(out, "UTF-8");
CSVWriter writer = new CSVWriter(w, ',','\u0000');
for(int i=0;i<list.size();i++){
System.out.println("list items"+list.get(i));
String[] entries = list.get(i).split(",");
writer.writeNext(entries);
//System.out.println("list items : "+list.get(i));
writer.close();
} catch (IOException e) {
e.printStackTrace();
say the filetoberead.CSV contains following data,
0,22012013,E,E,ASG,,O-0000,O,0000,100
1,111211,LI,0,TABO,B,M002500003593,,,К /БЭ60072715/,КАРТЕНБАЙ
2,07,Balance Free,3
1,383708,LI,0,BDSC,B,НЭ63041374,,,Т /НЭ63041374/,ОТГОНБААТАР
2,07,Balance Free,161
It reads and writes the numbers and english characters correct. All cirillic characters it prints "?" as follows,
0,22012013,E,E,ASG,,O-0000,O,0000,100
1,111211,LI,0,TABO,B,M002500003593,,,? /??60072715/,?????????
2,07,Balance Free,3
1,383708,LI,0,BDSC,B,??63041374,,,? /??63041374/,???????????
2,07,Balance Free,161
can somone please help me to resolve this problem?
Regards !
SameeraAre you sure that the input file (e.g. "Downloads/filetoberead.CSV") is in UTF-8 character set? You can also check it using some text editor having a view in hex mode. If each Cyrillic character in your input file occupies a single byte (instead of two), then the file is not in UTF-8. Most probably it is in Cyrillic for Windows (CP1251).
If this is the case, you should modify the line
BufferedReader br = new BufferedReader(new InputStreamReader(in,"UTF-8"));toBufferedReader br = new BufferedReader(new InputStreamReader(in,"windows-1251"));Dimitar -
Running Oracle database 10g and 11g on same 5 RAC nodes
Hello Gurus,
Could any body throw light if I can install and sucessfully run Oracle database 10g and 11g on the same Oracle RAC installation setup.My setup is below
Number of nodes-5
OS- windows 2003 or RHEL5
storage- DELL EMC SAN
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Thanks,
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