Storing a mutable ArrayList in cache
Hi -
I have an object as follows
Entity {
key k;
collection<Person> personList;
Each time, i get a new person, I want to add the person to the list.
But when I try this, I get unsupported operation and found that the arraylist that I stored became immutable. So I read the list from cache and copied to a local list and added a new person and then replaced the personList in the cache. This step works fine.
Can you please let me know if there are any other ways to make the collection mutable. Any tips would be useful.
regards
Hi user9072635 ,
Is the personsList initislised in the Entity classes constructor?
Try changing your readExternal method to look like this:
public void readExternal(PofReader reader) throws IOException {
personList= (List<Person>) reader.readCollection(0, new ArrayList<Person>());
}JK
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That is a good idea.
SQL> desc v$BH;
Name Null? Type
FILE# NUMBER
BLOCK# NUMBER
CLASS# NUMBER
STATUS VARCHAR2(10)
XNC NUMBER
FORCED_READS NUMBER
FORCED_WRITES NUMBER
LOCK_ELEMENT_ADDR RAW(4)
LOCK_ELEMENT_NAME NUMBER
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How can I call a method of an object that is stored in an ArrayList?
Hello,
I am working on a simple game.
I have my own collection class that can contain some Brick objects.
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Recently my weekly virus scans have taken longer and longer. The number of files scanned increased by tens of thousands every week. A carefully crafted search shows that files in the directory C:/Documents and Settings/userxxx/application data/Mozilla/Profiles/....../Cache/ is the probable source of all the now hundreds of thousands of files that my virus scan is encountering. Does anyone know which Mozilla application these files are being created by? Are they important or just temporary 'work' files?
The firefox cache may be cleared and should not have any ill effects, although some websites may then take longer to load. If you decide to clear the cache, or part of it see:
* [[how to clear the cache]]
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Where the AAA cache is stored??
Hi,
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we use authentication via a RADIUS server hosted on a windows server 2008, we autenticate users to grant access to the network devices like switchs and routers Cisco. we match on an active directory user and give differents level privileges.
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http://support.apple.com/kb/TS1314
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Using system cache with AIR...
Hi,
I have been monitoring calls to download media from an AIR iOS app via Charles sniffer. What I am seeing is repeated downloads of the identical files, each and every time they are requested. Obviously, with large data lists, this represents a huge amount of data that shouldn't need to be redownloaded a second time. In this case, I have checked that the cache headers are "no-cache", so I will take that up with the server developers, but I am curious: do image downloads via AIR cache downloaded data using the system's browser cache or is it separate somehow?
GYou can cache read-only PL/SQL stored procedures in the DB Cache. I'm not sure about db built-in packages, but if they are read-only, should be ok.
All DB Cache management functionality is available from DBA Studio. You can also use the supplied dbms_icache PL/SQL package to manage the cache. Refer to the DB Cache Concepts & Admin Guide for details.
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PHP Calling Stored Procedure Help!
I have been messing with this code for weeks now and read a ton of forums and archives and I can't figure this out for the life of me.... I included the Stored Procedure and the PHP code and the ERROR I am getting below. Someone else in my company wrote the stored procedure. I am running PHP Version 4.3.9
THANK YOU SO MUCH TO ANYONE IN ADVANCE!
Oracle Stored Procedure
Procedure GetDBCodes(appl_type In Varchar2,
output_array Out str_varray,
rtn_cd Out Number,
rtn_errm Out Varchar2,
rtn_spinfo Out Varchar2) As
-- Program ID: GetDBCodes
-- Author: Chris Calder
-- Date Written: October 5, 2004
-- System: Engage Thoughtware
-- Purpose: Get the database codes for the application identified by appl_type
-- Arguments: IN: appl_type 'ETW' = ThoughtTree
-- 'ADM' = System Administration
-- OUT output_array array of fixed length delimited output:
-- company_name: 1 - 38
-- user_name: 39 - 48
-- db_code: 49 - 58
-- db_version 59 - 66
-- OUT rtn_cd: SQL return code
-- OUT rtn_errm: Oracle error message text
-- OUT rtn_spinfo: debugging info consisting of:
-- procedure name and input parameter list,
-- followed by the label of the SQL
-- statement that caused the exception
sql_stmt Varchar2(100);
db_schema_name Varchar2(10);
company_name Varchar2(40);
db_version Varchar2(10);
counter Number Default 0;
lv_appl_type Varchar2(10);
stmt_label Varchar2(40);
data_error Exception;
Begin
stmt_label := '<<get_dbcodes>>';
output_array := str_varray();
lv_appl_type := appl_type || '%';
For code_rec In (Select schema_name,
db_code,
dblink
From etw$map.DBCode
Where (dblink <> 'UTDEV' Or dblink Is Null)
And schema_name Like lv_appl_type
Order By substr(schema_name,
4,
3))
Loop
db_schema_name := 'ETWDB' || substr(code_rec.schema_name,
4,
3);
If code_rec.dblink Is Null Then
sql_stmt := 'select db_node_name, db_version from ' ||
db_schema_name || '.masterprofile';
Else
sql_stmt := 'select db_node_name, db_version from ' ||
db_schema_name || '.masterprofile' || '@' ||
code_rec.dblink;
End If;
Execute Immediate sql_stmt
Into company_name, db_version;
-- add arrary extend and assignment here
output_array.Extend;
counter := counter + 1;
output_array(counter) := rpad(company_name,
38,
' ') || rpad(code_rec.schema_name,
10,
' ') ||
rpad(code_rec.db_code,
10,
' ') || db_version;
End Loop;
Commit;
rtn_errm := 'NONE';
rtn_cd := Sqlcode;
rtn_spinfo := 'CodeMap.GetDBCodes' || ' successful';
Exception
When data_error Then
Rollback;
rtn_errm := 'Appl_type value: ' || appl_type || ' is not valid';
rtn_cd := -999;
rtn_spinfo := 'CodeMap.GetDBCodes' || ' unsuccessful';
When Others Then
--** select from value table failed
Rollback;
rtn_errm := Sqlerrm;
rtn_cd := Sqlcode;
rtn_spinfo := 'CodeMap.GetDBCodes ' || stmt_label;
End GetDBCodes;
PHP Calling the Oracle Stored Procedure
<?php header("cache-control: no-store, no-cache, must-revalidate"); header("Pragma: no-cache");
$con = OCILogon('etw$map', 'pam$wte', 'LINUX_CONSONUS');
$query = "BEGIN codemap.GETDBCODES('ETW',:results,:cd,:errm,:spinfo); END;";
$stmt = OCIParse($con, $query) or die ('Can not parse query');
OCIBindByName($stmt,":results", $output_array,-1);
OCIBindByName($stmt,":cd", $rtn_cd,-1);
OCIBindByName($stmt,":errm", $rtn_errm,-1);
OCIBindByName($stmt,":spinfo", $rtn_spinfo,-1);
OCIExecute($stmt);
?>
ERROR I AM GETTING
Warning: ociexecute(): OCIStmtExecute: ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to 'GETDBCODES' ORA-06550: line 1, column 7: PL/SQL: Statement ignored in c:\inetpub\wwwroot\Projects\PopUpRef\v2\php\testOracle.php on line 17Ok so I got the problem fixed,
one of the output variables coming from the stored procedure was a custom defined object. So I had to use an ocinewcollection and set the typ to the custom type oracle was using and then bind it. So now everything is working great... I just thought I would post this for any one else that runs into this...
here is my working code:
<?php header("cache-control: no-store, no-cache, must-revalidate"); header("Pragma: no-cache");
$con = OCILogon('user', 'pass', 'LINUX_CONSONUS');
$query = "BEGIN codemap.GETDBCODES('ETW',:output_array,:cd,:errm,:spinfo); END;";
$stmt = OCIParse($con, $query) or die ('Can not parse query');
$output_array = ocinewcollection($con,"STR_VARRAY");
OCIBindByName($stmt,":output_array", $output_array,5000,OCI_B_SQLT_NTY);
OCIBindByName($stmt,":cd", $rtn_cd,6);
OCIBindByName($stmt,":errm", $rtn_errm,200);
OCIBindByName($stmt,":spinfo", $rtn_spinfo,200);
OCIExecute($stmt);
?>
So everything is working great. but I do have another question now how do I get data out of the ocinewcollection object? -
Hello all,
I know how to clear Safari's History, Cookies, and Cache in Settings.
My question is: *How do you clear cache from applications*.
Based on this article:
+http://www.storefrontbacktalk.com/securityfraud/iphone-payment-peril-mobile-mayh em-omen/+
I know the iPhone stores information typed into applications for up to one year. This could include credit card and other sensitive info. How do you clear the cache of applications?
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BenYou're welcome.
Even if this were true - the password for an account that is checked/confirmed on a server and not saved with the app is being stored in the app's cache which I don't believe is true, how would someone be able to access the app's cache on your iPhone? Do you use the passcode lock feature?
If your iPhone were lost or stolen, someone would need to know what they are doing to be able to access an app's cache, and I seriously doubt many would waste their time trying to do. The overwhelming majority of dishonest folks will be more interested in using the iPhone or selling it to someone else for profit.
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Event-driven refresh of cached shared datasets
We have a growing business intelligence solution deployed on SQL Server 2008 R2. All reports are in SSRS and are executed via web browser by the end-users throughout the day.
We have been investigating how to improve performance and so far it appears that converting report datasets to shared datasets and then caching those shared datasets provides the greatest opportunity. (We can't snapshot or cache the individual reports
themselves as they all contain customized content based upon the end user's roles and permissions).
Creation of the shared datasets and setting them to be cached is easy, and we're seeing really nice performance improvements.
However, we haven't been able to find a way to refresh the cached data without using the SSRS calendar-based schedule. Our ETL process completes anywhere from 8 am to sometime after noon depending on data availability from source systems, so we can't
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Ideally we'd like to add commands to the end of the SSIS workstream that loads the database, and have these commands expire the existing cached datasets and refresh their data.
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As we know, there is no explicit setting for conditionally expiring the report cache. To work around this issue, you can use a stored procedure for the report dataset and create a parameter you can pass from the report to indicate that you should explictly
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the dataset cache. For more information, please see:
http://social.technet.microsoft.com/Forums/en-US/sqlreportingservices/thread/eb0dd2a6-9d2f-4430-9e88-020377e4fafd.
Regards,
Mike Yin
TechNet Community Support -
Hi, I need to create an array of actors which would then be stored into the arraylist of dvds. At the moment the actors are a simple string which then gets assigned to the arraylist, but i need to be able to add as many actors as i want and add it to the arraylist so i can search individual actors and display the DVDs that they're featured in:
public class DVDShop
//Declarations of variables
static String thetitle;
static String search;
static String catchoice;
static int yearchoice;
static int theyear;
static String theactors;
static String thecategory;
static int menuchoice;
static boolean finished = false;
int categorychoice;
public static void main(String[] args)
//Defining an Arraylist to Store the DVDs
ArrayList<DVD> allDVDs = new ArrayList<DVD>();
//Defining Scanner class for keyboard input
Scanner input = new Scanner(System.in);
while(!finished){
System.out.println("Total number of DVDs = " + allDVDs.size());
showMenu();
System.out.println("Please make a selection: ");
menuchoice = input.nextInt();
//Switch statement to do tasks from menu
switch (menuchoice)
//Scanner asking for input from the user to store into variables
case 1: System.out.println("What is the title of the DVD? ");
thetitle = input.nextLine();
thetitle = input.nextLine();
System.out.println("Which year was the DVD film made?");
theyear = input.nextInt();
System.out.println("Write the names of the cast on a single line separated by commas");
theactors = input.nextLine();
theactors = input.nextLine();
System.out.println("Select the number for category choice: ");
System.out.println("\t\t 1. Thriller;");
System.out.println("\t\t 2. Drama;");
System.out.println("\t\t 3. Comedy;");
thecategory = input.next();
if(thecategory.equals("1"))
thecategory = ("Thriller");
if(thecategory.equals("2"))
thecategory =("Drama");
if(thecategory.equals("3"))
thecategory = ("Comedy");
//Variables get saved to the allDVDs arraylist
allDVDs.add(new DVD(thetitle,theyear,theactors,thecategory));
Collections.sort(allDVDs);
break;
//Removing a DVD from the arraylist using a for loop with the remove method
case 2: System.out.println("Which DVD would you like to delete?");
thetitle = input.nextLine();
thetitle = input.nextLine();
for (int i =0; i < allDVDs.size(); i++ ){
search = allDVDs.get(i).title;
if(search.equalsIgnoreCase(thetitle)){
System.out.println(allDVDs.get(i));
System.out.println("This DVD has been deleted");
allDVDs.remove(i);}
else System.out.println("This DVD is not listed.");
break;
//Search function using a for loop
case 3: System.out.println("Enter the name of the actor who appears in the DVD film:");
theactors = input.nextLine();
theactors = input.nextLine();
for (int i =0; i < allDVDs.size(); i++ ){
search = allDVDs.get(i).actors;
if(search.equalsIgnoreCase(theactors)){
System.out.println(allDVDs.get(i));
break;
// All elements in the arraylist get printer using this for loop
case 4:
for (int i = 0; i < allDVDs.size(); i++)
System.out.println(allDVDs.get(i));
break;
// Search function using a nested if statement for 2 criteria in a for loop
case 5:
System.out.println("Enter the earliest year for the DVDs you want to be displayed:");
theyear = input.nextInt();
System.out.println("Select the number for category choice:");
System.out.println("\t\t 1. Thriller;");
System.out.println("\t\t 2. Drama;");
System.out.println("\t\t 3. Comedy;");
thecategory = input.next();
if(thecategory.equals("1"))
thecategory = ("Thriller");
if(thecategory.equals("2"))
thecategory =("Drama");
if(thecategory.equals("3"))
thecategory = ("Comedy");
for (int i =0; i < allDVDs.size(); i++ ){
yearchoice = allDVDs.get(i).year;
catchoice = allDVDs.get(i).category;{
if (yearchoice >= theyear){
if (catchoice.equals(thecategory))
System.out.println(allDVDs.get(i));
break;
//Prints all DVDs withe comedy category
case 6:
for (int i =0; i < allDVDs.size(); i++ ){
catchoice = allDVDs.get(i).category;
if(catchoice.equalsIgnoreCase("Comedy")){
System.out.println(allDVDs.get(i));
break;
//Prints all DVDs withe Thriller category
case 7:
for (int i =0; i < allDVDs.size(); i++ ){
catchoice = allDVDs.get(i).category;
if(catchoice.equalsIgnoreCase("Thriller")){
System.out.println(allDVDs.get(i));
break;
//Prints all DVDs withe Drama category
case 8:
for (int i =0; i < allDVDs.size(); i++ ){
catchoice = allDVDs.get(i).category;
if(catchoice.equalsIgnoreCase("Drama")){
System.out.println(allDVDs.get(i));
break;
//Print the address of the DVD shop
case 9:
System.out.println(" Address:");
System.out.println(" 10 King Road\n Knightsbridge\n London\n SW10 9PE");
break;
//Quits the Switch statement
case 0: finished = true;
break;
//Print an error message if any integer other than the ones stated are input
default: System.out.print("Error. You did not select a number from the menu.\n");
break;
public static void showMenu()
//Menu Function
System.out.println("\n\t Menu");
System.out.println("\t\t 1. Create DVD;");
System.out.println("\t\t 2. Delete a DVD;");
System.out.println("\t\t 3. Search for an actor/actress;");
System.out.println("\t\t 4. Display all DVDs;");
System.out.println("\t\t 5. Search by category and earliest year;");
System.out.println("\t\t 6. Display all comedy DVDs;");
System.out.println("\t\t 7. Display all thriller DVDs;");
System.out.println("\t\t 8. Display all drama DVDs;");
System.out.println("\t\t 9. Display address of the DVD shop;");
System.out.println("\t\t 0. Quit.");
System.out.println("\n");
Any help would be much appreciated.I think that your DVD class need to have an array list of Actors as an attribute.
you might also ned to implement some fuctions like this
public void addActor(String name)
public boolean isActorFeaturing(String name);
public String[] listActors(); -
Oracle RAW / Long / LOBs - Buffer cache?
Hello guys,
i think i have read sometime ago something about that LOBs are not cached in the buffer cache? Is this right?
I also think that i can remember that raw or long are stored in the sga buffer cache?
I can not find any official documentation about that topic... maybe you can help me...
Thanks and Regards
StefanHi,
Depends on whether you are on about temporary lobs or lobs that are persisted as a column. If it's as a column then you have the cache/cache read/nocache option which is part of the lob storage clause. If it's nocache it's not put into the buffer cache and if it's cache it is (and I'm sure you can figure out from this what "cache read" means)
If it's a temporary lob then it exists in the temporary tablespace which if a true temp tablespace (which it should be) will be accessed using direct IO (so not buffered).
An the official documentation is easily found, Oracle wrote a whole manual dedicated to LOBS...
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14249/toc.htm
HTH
Chris -
I'm working on an application that uses stored procedures, and our statement cache size is set to 10. We are running the application on WLS 9.1 and using Microsoft's SQL Server 2005 XA driver. Most of the time, our application functions correctly. However, we are seeing a serious problem that occurs completely at random, but seems to always begin in conjunction with a redeployment when it does happen.
The point in our system where we are able to identify it is a call to a stored procedure where the application specifically catches a primary key violation exception and performs some logging logic when this occurs (some PK violations are expected in this particular case, so it's not typically a true error situation). In our logs, it appears that this error is being caught and handled, when in fact no call to the stored procedure was ever sent to the database. If our DBAs enable tracing on SQL Server and we force a transaction through that we know will NOT throw a PK violation, they see no evidence that any transaction was ever begun or that any call was ever sent to the stored procedure, but our application is somehow catching this exception. It's as if the application is receiving cached results from a previous call to the stored procedure, and the call to the DB is never being executed.
If we clear the statement cache or restart WLS, the problem disappears until the next time it randomly resurfaces. We cannot seem to force it to happen. This is a tremendous problem because in a normal production environment we would not be specifically monitoring this situation and thus would have no knowledge that transactions are being dropped. Is this a known bug, and if so, has it been fixed in WLS 9.2? Any help would be greatly appreciated.
Regards,
SabrinaWe started off using Microsoft's driver because at the time, SQL Server 2005 was brand new and there was no support for it in WLS. In light of all the problems we've had with it, we may consider using BEA's driver now that it is available.
We have been in touch with Microsoft on numerous occasions regarding the driver issues we have seen, and by this point most (that we know of) seem to have been fixed. However, there is one nagging issue that we can't seem to resolve and I'm not even sure whether this one is a Microsoft issue or something that we have configured incorrectly in WLS. It appears that whenever an XA transaction is rolled back by the container, the error below appears in the WLS server log. Based on what I have seen in checking a handful of specific transactions, this error does not appear to be causing any actual data integrity issues; the transactions seem to be successfully rolled back and reprocessed if necessary. However, we have so much data coming into our system that it is difficult to tell. In one area of the system in particular, we have a lot of DB deadlocking issues and we're not sure whether that is related to this problem. Have you seen this error before? Thanks again for your help.
Regards,
Sabrina
####<Jul 24, 2006 7:03:33 AM EDT> <Error> <JTA> <ASAP-WEBLOGIC1> <wls_ManagedServer_1> <[ACTIVE] ExecuteThread: '36' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <BEA1-1E9A446DF85749F80F90> <> <1153739013725> <BEA-110412> <Xid=BEA1-1E9A446DF85749F80F90(21643353),Status=Rolled back. [Reason=weblogic.transaction.internal.AppSetRollbackOnlyException],HeuristicErrorCode=XA_HEURHAZ,numRepliesOwedMe=0,numRepliesOwedOthers=0,seconds since begin=3,seconds left=30,activeThread=Thread[[ACTIVE] ExecuteThread: '36' for queue: 'weblogic.kernel.Default (self-tuning)',5,Pooled Threads],XAServerResourceInfo[WLStore_domain_filestore]=(ServerResourceInfo[WLStore_domain_filestore]=(state=rolledback,assigned=wls_ManagedServer_1),xar=WLStore_domain_filestore3792941,re-Registered = false),XAServerResourceInfo[IngestorXADataSource]=(ServerResourceInfo[IngestorXADataSource]=(state=rolledback,assigned=wls_ManagedServer_1),xar=IngestorXADataSource,re-Registered = false),SCInfo[test_domain+wls_ManagedServer_1]=(state=rolledback),properties=({}),local properties=({weblogic.jdbc.jta.IngestorXADataSource=[ No XAConnection is attached to this TxInfo ]}),OwnerTransactionManager=ServerTM[ServerCoordinatorDescriptor=(CoordinatorURL=wls_ManagedServer_1+asap-weblogic1:8010+test_domain+t3+, XAResources={WLStore_domain_filestore, ErrorXADataSource, IngestorXADataSource},NonXAResources={})],CoordinatorURL=wls_ManagedServer_1+asap-weblogic1:8010+test_domain+t3+) completed heuristically: (IngestorXADataSource, HeuristicHazard, (javax.transaction.xa.XAException: java.sql.SQLException: ROLLBACK:Status:0 msg:*** SQLJDBC_XA DTC_ERROR Context: xa_rollback, state=1, StatusCode:-4 (0xFFFFFFFC) ***)) >
####<Jul 24, 2006 7:03:33 AM EDT> <Notice> <EJB> <ASAP-WEBLOGIC1> <wls_ManagedServer_1> <[ACTIVE] ExecuteThread: '36' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1153739013725> <BEA-010017> <Exception occurred during rollback of transaction Xid=BEA1-1E9A446DF85749F80F90(21643353),Status=Rolled back. [Reason=weblogic.transaction.internal.AppSetRollbackOnlyException],HeuristicErrorCode=XA_HEURHAZ,numRepliesOwedMe=0,numRepliesOwedOthers=0,seconds since begin=3,seconds left=30,XAServerResourceInfo[WLStore_domain_filestore]=(ServerResourceInfo[WLStore_domain_filestore]=(state=rolledback,assigned=wls_ManagedServer_1),xar=WLStore_domain_filestore3792941,re-Registered = false),XAServerResourceInfo[IngestorXADataSource]=(ServerResourceInfo[IngestorXADataSource]=(state=rolledback,assigned=wls_ManagedServer_1),xar=IngestorXADataSource,re-Registered = false),SCInfo[test_domain+wls_ManagedServer_1]=(state=rolledback),properties=({}),local properties=({weblogic.jdbc.jta.IngestorXADataSource=[ No XAConnection is attached to this TxInfo ]}),OwnerTransactionManager=ServerTM[ServerCoordinatorDescriptor=(CoordinatorURL=wls_ManagedServer_1+asap-weblogic1:8010+test_domain+t3+, XAResources={WLStore_domain_filestore, ErrorXADataSource, IngestorXADataSource},NonXAResources={})],CoordinatorURL=wls_ManagedServer_1+asap-weblogic1:8010+test_domain+t3+): javax.transaction.SystemException: Heuristic hazard: (IngestorXADataSource, HeuristicHazard, (javax.transaction.xa.XAException: java.sql.SQLException: ROLLBACK:Status:0 msg:*** SQLJDBC_XA DTC_ERROR Context: xa_rollback, state=1, StatusCode:-4 (0xFFFFFFFC) ***))
at weblogic.transaction.internal.ServerTransactionImpl.internalRollback(ServerTransactionImpl.java:405)
at weblogic.transaction.internal.ServerTransactionImpl.rollback(ServerTransactionImpl.java:371)
at weblogic.ejb.container.internal.MDListener.execute(MDListener.java:485)
at weblogic.ejb.container.internal.MDListener.transactionalOnMessage(MDListener.java:332)
at weblogic.ejb.container.internal.MDListener.onMessage(MDListener.java:288)
at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:3824)
at weblogic.jms.client.JMSSession.execute(JMSSession.java:3738)
at weblogic.jms.client.JMSSession$UseForRunnable.run(JMSSession.java:4228)
at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
.>
####<Jul 24, 2006 7:03:33 AM EDT> <Info> <EJB> <ASAP-WEBLOGIC1> <wls_ManagedServer_1> <[ACTIVE] ExecuteThread: '36' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1153739013725> <BEA-010213> <Message-Driven EJB: IngestDBLoggerMDB's transaction was rolledback. The transaction details are: Xid=BEA1-1E9A446DF85749F80F90(21643353),Status=Rolled back. [Reason=weblogic.transaction.internal.AppSetRollbackOnlyException],HeuristicErrorCode=XA_HEURHAZ,numRepliesOwedMe=0,numRepliesOwedOthers=0,seconds since begin=3,seconds left=30,XAServerResourceInfo[WLStore_domain_filestore]=(ServerResourceInfo[WLStore_domain_filestore]=(state=rolledback,assigned=wls_ManagedServer_1),xar=WLStore_domain_filestore3792941,re-Registered = false),XAServerResourceInfo[IngestorXADataSource]=(ServerResourceInfo[IngestorXADataSource]=(state=rolledback,assigned=wls_ManagedServer_1),xar=IngestorXADataSource,re-Registered = false),SCInfo[test_domain+wls_ManagedServer_1]=(state=rolledback),properties=({}),local properties=({weblogic.jdbc.jta.IngestorXADataSource=[ No XAConnection is attached to this TxInfo ]}),OwnerTransactionManager=ServerTM[ServerCoordinatorDescriptor=(CoordinatorURL=wls_ManagedServer_1+asap-weblogic1:8010+test_domain+t3+, XAResources={WLStore_domain_filestore, ErrorXADataSource, IngestorXADataSource},NonXAResources={})],CoordinatorURL=wls_ManagedServer_1+asap-weblogic1:8010+test_domain+t3+).> -
SAP Netweaver CE 7.1 - Cleaning up JAVA Netweaver Cache Procedure???...
Good Afternoon,
One of my clients has a SAP Netweaver CE 7.1 (EHP1) and there are several development team developing using the CAF in the system (several webservices, etc...).
One of the development teams is requesting a Netweaver Java Cache cleanup... The argument is that some objects developed by them should be in the system cache and the cache needs to be clean in order to reset these objects... So they're asking for a instance restart in a productive system, and they're asking that in a regular basis.
My administration knowledge is SAP ABAP systems related, i don't have deep knowledge in SAP JAVA instances. I've tried to find information about it but i don't find any procedure to do that manually without restarting the SAP system.
Does this cleanup of the Netweaver JAVA cache, makes sense to be asked to do? Is there any procedure (standard SAP) in order to do this without restarting the SAP instance?
Any help will be appreciated.
Thanks,
Pedro GasparFrom Control Panel, go to Java -> General tab, Temporary Internet Files
-> View... -> Delete all the content there.
Then go to:
> Integration buider page http:// (http://%3Chost%3E:%3Cport%3E/rep)
> Administration
> Tab - Directory (Repository as well)
> Java Web Start Administration
> Restore Archives and Generate New Signature
Portal Caches
The main portal caches are:
u2022 Navigation cache
u2022 PCD cache
u2022 Portal runtime cache
u2022 Database cache
u2022 UME cache
Navigation cache
To clear the Navigation cache:
System Administration -> Navigation
Clear the cache for the ROLES connector.
PRT cache
The content admin can enable portal content to be cached in the memory by the portal. This content will be stored in the portal runtime cache. This cache is actually storing iView content.
To clear the PRT cache:
http:// server:port /irj/servlet/prt/portal/prtroot/com.sap.portal.prt.cache.PRTRegionMemoryClear
PCD cache
To clear the PCD cache:
System Administration -> Support -> Support Desk -> Portal Content Directory -> PCD Administration
Database cache
To clear the DB cache:
http:// server:port /irj/servlet/prt/portal/prtroot/com.sap.portal.prt.cache.PRTRegionDBClear
UME cache
To clear this cache:
System Administration -> System Configuration -> UME Configuration -> Support -> Invalidate cluster wide cache
HTTP Provider Cache
This is the cache for static files like CSS, Javascript, Images, HTML. You`ll have to clear this cache when you redeploy an application and receive Javascript errors. To clear this cache:
Visual Administrator -> Cluster -> Server # -> Services -> HTTP Provider
Regards,
Dinesh -
ArrayLists & Database Problems
I've created a program using Swing. My program starts up and loads data from my access database into ArrayLists. I then work on these ArrayLists in my program, adding and removing data. When i've finished, i have a save button which deletes all the data from a table in the database, then inserts the data stored in the ArrayList into the empty table. It does this sucessfully, i check the table in the database before and after.
My problem is when i use the program again, and it loads the newly inserted data from the database into the arraylists and the JLists loads fine, but when i attempt to remove or add data from the arraylist or even query it, i get the error message:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
Any idea's why?i found the problem, was in the database. should get it fixed soon hopefully. Thanks anyway!
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