Memory leak using Oracle ODBC connection. Works perfect with MSSQL.

Hello,
what could cause memory leaks which is not persistent. Sometimes in different OS and sometimes in different hardware. the common player to my issue is only with oracle.

A memory leak that is not persistent is not a memory leak.
You'll have to be way more specific for a more meaningful answer.
Have you tried memory profiling tools for your operating system to locate the "leak"?
Yours,
Laurenz Albe

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Memory leak using Oracle thin driver on wls6.1...

Hi, I've been attempting to find a memory leak in an application that
runs on WLS 6.1 SP2, on Solaris 8 and accessing an Oracle 9i db. We
are using the Type 4 (Thin) driver and JProbe reports that hundreds of
oracle.jdbc.* objects are left on the heap after my test case
completes. Specifically oracle.jdbc.ttc7.TTCItem is the most common
loiterer on the heap. I have verified that after each database access
the resources are release correctly (i.e. ResultSet, Connection,
PreparedStatement, etc.)
Has anyone encountered similar problems? or does anyone know how to
fix this?
Thanks,
Tim Watson

Hi Tim!
We have seen problem using oracle 817 client that has been resolved using
901 client for type2(oci) driver, But i am not aware of thin driver
problem. You should check with oracle if they have find any customer's
with this problem.
Thanks,
Mitesh
Tim Watson wrote:
Hi, I've been attempting to find a memory leak in an application that
runs on WLS 6.1 SP2, on Solaris 8 and accessing an Oracle 9i db. We
are using the Type 4 (Thin) driver and JProbe reports that hundreds of
oracle.jdbc.* objects are left on the heap after my test case
completes. Specifically oracle.jdbc.ttc7.TTCItem is the most common
loiterer on the heap. I have verified that after each database access
the resources are release correctly (i.e. ResultSet, Connection,
PreparedStatement, etc.)
Has anyone encountered similar problems? or does anyone know how to
fix this?
Thanks,
Tim Watson

I WAS USING I PHONE4 AND MY CAR KIT WAS WORKING PERFECT WITH IT VIA BLUETOOTH(RENAULT GRAND SCENIC 2011) BUT I BOUGHT THE NEW 4S AND EVENTHOUGH I CAN BE CONNECTED TO MY CAR KIT BY BLUETOOTH I CAN NOT HEAR IT ON MY CAR STREO.CAN ANYBODY HELP ME

I WAS USING I PHONE4 AND MY CAR KIT WAS WORKING PERFECT WITH IT VIA BLUETOOTH(RENAULT GRAND SCENIC 2011) BUT I BOUGHT THE NEW 4S AND EVENTHOUGH I CAN BE CONNECTED TO MY CAR KIT BY BLUETOOTH I CAN NOT HEAR IT ON MY CAR STREO.CAN ANYBODY HELP ME

Please stop posting in ALL UPPER CASE; it is considered SHOUTING, is harder to read, and is considered rude.
If you have not yet done so unpair the car kit from the phone, or better yet reset it completely, Forget the car kit in the iPhone, and pair it anew.

Bug:4705928 PLSQL: Memory leak using small varrays

We have Oracle version 10.2.0.1.0
We have a problem with a procedure.
In our scenario we make use of VARRAY in the procedure to pass some filter parameters to a select distinct querying a view made on three tables.
Unfotunately not always execution it is successful.
Sometimes it returns wrong value (0 for the count parameter), sometimes (rarely) the server stops working.
We suspect that this is caused by a bug fixed in versione 10.2.0.3.0
Bug:4705928 PLSQL: Memory leak using small varrays when trimming the whole collection and inserting into it in a loop
We suspect this becasue we made two procedure the first (spProductCount) uses a function (fnProductFilter) to calculate the values of a varray and passes them into the select,
while in the second procedure (spProductCount2) parameters are passed directly into the statement without varray
and there are failures only in the first procedure.
On the other hand on another server 10.2.0.1.0 we never have this problem.
The instance manifesting the bug runs under shared mode, while the other is under dedicated mode.
Turning the first one to dedicated mode makes the bugs disapear.
Unfortunately this is not a solution.
In the sample there are the three table with all constraints, the view, tha varray custom type, the function and the two procedures.
Is there someone that may examine our sample and tell us if the pl/sql code corresponds to the bug desciption.
We also want to know if it's possibile that the same server running under different mode (SHARED/DEDICATED) doesn't behave the same way.
The tables:
--Products
CREATE TABLE "Products" (
     "Image" BLOB
     , "CatalogId" RAW(16)
     , "ProductId" RAW(16)
     , "MnemonicId" NVARCHAR2(50) DEFAULT ''
     , "ProductParentId" RAW(16)
ALTER TABLE "Products"
     ADD CONSTRAINT "NN_Products_M04" CHECK ("CatalogId" IS NOT NULL)
ALTER TABLE "Products"
     ADD CONSTRAINT "NN_Products_M05" CHECK ("ProductId" IS NOT NULL)
ALTER TABLE "Products"
ADD CONSTRAINT "PK_Products"
PRIMARY KEY ("ProductId")
CREATE INDEX "IX_Products"
ON "Products" ("CatalogId", "MnemonicId")
CREATE UNIQUE INDEX "UK_Products"
ON "Products" (DECODE("MnemonicId", NULL, NULL, RAWTOHEX("CatalogId") || "MnemonicId"))
--Languages
CREATE TABLE "Languages" (
     "Description" NVARCHAR2(250)
     , "IsStandard" NUMBER(1)
     , "LanguageId" RAW(16)
     , "MnemonicId" NVARCHAR2(12)
ALTER TABLE "Languages"
     ADD CONSTRAINT "NN_Languages_M01" CHECK ("LanguageId" IS NOT NULL)
ALTER TABLE "Languages"
     ADD CONSTRAINT "NN_Languages_M05" CHECK ("MnemonicId" IS NOT NULL)
ALTER TABLE "Languages"
ADD CONSTRAINT "PK_Languages"
PRIMARY KEY ("LanguageId")
ALTER TABLE "Languages"
ADD CONSTRAINT "UK_Languages"
UNIQUE ("MnemonicId")
--ProductDesc
CREATE TABLE "ProductDesc" (
     "Comment" NCLOB
     , "PlainComment" NCLOB
     , "Description" NVARCHAR2(250)
     , "DescriptionText" NCLOB
     , "PlainDescriptionText" NCLOB
     , "LanguageId" NVARCHAR2(12)
     , "ProductId" RAW(16)
ALTER TABLE "ProductDesc"
     ADD CONSTRAINT "NN_ProductDescM01" CHECK ("LanguageId" IS NOT NULL)
ALTER TABLE "ProductDesc"
     ADD CONSTRAINT "NN_ProductDescM02" CHECK ("ProductId" IS NOT NULL)
ALTER TABLE "ProductDesc"
ADD CONSTRAINT "PK_ProductDesc"
PRIMARY KEY ("ProductId", "LanguageId")
ALTER TABLE "ProductDesc"
ADD CONSTRAINT "FK_ProductDesc1"
FOREIGN KEY("ProductId") REFERENCES "Products" ("ProductId")
ALTER TABLE "ProductDesc"
ADD CONSTRAINT "FK_ProductDesc2"
FOREIGN KEY("LanguageId") REFERENCES "Languages" ("MnemonicId")
/The view:
--ProductView
CREATE OR REPLACE VIEW "vwProducts"
AS
     SELECT
           "Products"."CatalogId"
          , "ProductDesc"."Comment"
          , "ProductDesc"."PlainComment"
          , "ProductDesc"."Description"
          , "ProductDesc"."DescriptionText"
          , "ProductDesc"."PlainDescriptionText"
          , "Products"."Image"
          , "Languages"."MnemonicId" "LanguageId"
          , "Products"."MnemonicId"
          , "Products"."ProductId"
          , "Products"."ProductParentId"
          , TRIM(NVL("ProductDesc"."Description" || ' ', '') || NVL("ParentDescriptions"."Description", '')) "FullDescription"
     FROM "Products"
     CROSS JOIN "Languages"
     LEFT OUTER JOIN "ProductDesc"
     ON "Products"."ProductId" = "ProductDesc"."ProductId"
     AND "ProductDesc"."LanguageId" = "Languages"."MnemonicId"
     LEFT OUTER JOIN "ProductDesc" "ParentDescriptions"
     ON "Products"."ProductParentId" = "ParentDescriptions"."ProductId"
     AND ("ParentDescriptions"."LanguageId" = "Languages"."MnemonicId")
/The varray:
--CustomType VARRAY
CREATE OR REPLACE TYPE Varray_Params IS VARRAY(100) OF NVARCHAR2(1000);
/The function:
--FilterFunction
CREATE OR REPLACE FUNCTION "fnProductFilter" (
     parCatalogId "Products"."CatalogId"%TYPE,
     parLanguageId                    NVARCHAR2 := N'it-IT',
     parFilterValues                    OUT Varray_Params
RETURN INTEGER
AS
     varSqlCondition                    VARCHAR2(32000);
     varSqlConditionValues          NVARCHAR2(32000);
     varSql                              NVARCHAR2(32000);
     varDbmsCursor                    INTEGER;
     varDbmsResult                    INTEGER;
     varSeparator                    VARCHAR2(2);
     varFilterValue                    NVARCHAR2(1000);
     varCount                         INTEGER;
BEGIN
     varSqlCondition := '(T_Product."CatalogId" = HEXTORAW(:parentId)) AND (T_Product."LanguageId" = :languageId )';
     varSqlConditionValues := CHR(39) || TO_CHAR(parCatalogId) || CHR(39) || N', ' || CHR(39 USING NCHAR_CS) || parLanguageId || CHR(39 USING NCHAR_CS);
     parFilterValues := Varray_Params();
     varSql := N'SELECT FilterValues.column_value FilterValue FROM TABLE(Varray_Params(' || varSqlConditionValues || N')) FilterValues';
     BEGIN
          varDbmsCursor := dbms_sql.open_cursor;
          dbms_sql.parse(varDbmsCursor, varSql, dbms_sql.native);
          dbms_sql.define_column(varDbmsCursor, 1, varFilterValue, 1000);
          varDbmsResult := dbms_sql.execute(varDbmsCursor);
          varCount := 0;
          LOOP
               IF (dbms_sql.fetch_rows(varDbmsCursor) > 0) THEN
                    varCount := varCount + 1;
                    dbms_sql.column_value(varDbmsCursor, 1, varFilterValue);
                    parFilterValues.extend(1);
                    parFilterValues(varCount) := varFilterValue;
               ELSE
                    -- No more rows to copy
                    EXIT;
               END IF;
          END LOOP;
          dbms_sql.close_cursor(varDbmsCursor);
     EXCEPTION WHEN OTHERS THEN
          dbms_sql.close_cursor(varDbmsCursor);
          RETURN 0;
     END;
     FOR i in parFilterValues.first .. parFilterValues.last LOOP
          varSeparator := ', ';
     END LOOP;
     RETURN 1;
END;
/The procedures:
--Procedure presenting anomaly\bug
CREATE OR REPLACE PROCEDURE "spProductCount" (
     parCatalogId "Products"."CatalogId"%TYPE,
     parLanguageId NVARCHAR2 := N'it-IT',
     parRecords OUT NUMBER
AS
     varFilterValues Varray_Params;
     varResult INTEGER;
     varSqlTotal VARCHAR2(32000);
BEGIN
     parRecords := 0;
     varResult := "fnProductFilter"(parCatalogId, parLanguageId, varFilterValues);
     varSqlTotal := 'BEGIN
     SELECT count(DISTINCT T_Product."ProductId") INTO :parCount FROM "vwProducts" T_Product
          WHERE ((T_Product."CatalogId" = HEXTORAW(:parentId)) AND (T_Product."LanguageId" = :languageId ));
END;';
     EXECUTE IMMEDIATE varSqlTotal USING OUT parRecords, varFilterValues(1), varFilterValues(2);
END;
--Procedure NOT presenting anomaly\bug
CREATE OR REPLACE PROCEDURE "spProductCount2" (
     parCatalogId "Products"."CatalogId"%TYPE,
     parLanguageId NVARCHAR2 := N'it-IT',
     parRecords OUT NUMBER
AS
     varFilterValues Varray_Params;
     varResult INTEGER;
     varSqlTotal VARCHAR2(32000);
BEGIN
     parRecords := 0;
     varSqlTotal := 'BEGIN
     SELECT count(DISTINCT T_Product."ProductId") INTO :parCount FROM "vwProducts" T_Product
          WHERE ((T_Product."CatalogId" = HEXTORAW(:parentId)) AND (T_Product."LanguageId" = :languageId ));
END;';
     EXECUTE IMMEDIATE varSqlTotal USING OUT parRecords, parCatalogId, parLanguageId;
END;Edited by: 835125 on 2011-2-9 1:31

835125 wrote:
Using VARRAY was the only way I found to transform comma seprated text values (e.g. "'abc', 'def', '123'") in a collection of strings.A varray is just a functionally crippled version of a nested table collection type, with a defined limit you probably don't need. (Why 100 specifically?) Instead of
CREATE OR REPLACE TYPE varray_params AS VARRAY(100) OF NVARCHAR2(1000);try
CREATE OR REPLACE TYPE array_params AS TABLE OF NVARCHAR2(1000);I don't know whether that will solve the problem but at least it'll be a slightly more useful type.
What makes you think it's a memory leak specifically? Do you observe session PGA memory use going up more than it should?
btw good luck with all those quoted column names. I wouldn't like to have to work with those, although they do make the forum more colourful.
Edited by: William Robertson on Feb 11, 2011 7:54 AM

Nasty memory leak using sockets inside threads

In short, any time I create or use a socket inside a worker thread, that Thread object instance will never be garbage collected. The socket does not need to be connected or bound, it doesn't matter whether I close the socket or not, and it doesn't matter whether I create the Socket object inside the thread or not. As I said, it's nasty.
I initially encountered this memory leak using httpclient (which creates a worker thread for every connect() call), but it is very easy to reproduce with a small amount of stand-alone code. I'm running this test on Windows, and I encounter this memory leak using the latest 1.5 and 1.6 JDK's. I'm using the NetBeans 5.5 profiler to verify which objects are not being freed.
Here's how to reproduce it with an unbound socket created inside a worker thread:
public class Test {
     public static class TestRun extends Thread {
          public void run() {
               new Socket();
     public static void main(String[] strArgs) throws Exception {
          for(;;) {
               (new TestRun()).start();
               Thread.sleep(10);
}Here's how to reproduce it with a socket created outside the thread and used inside the worker thread:
public class Test {
     public static class TestRun extends Thread {
          Socket s;
          public TestRun(Socket s) { this.s = s; }
          public void run() {
               try {
                    s.bind(new InetSocketAddress(0));
                    s.close();
               } catch(Exception e) {}
     public static void main(String[] strArgs) throws Exception {
          for(;;) {
               (new TestRun(new Socket())).start();
               Thread.sleep(10);
}Here's how to reproduce it implementing Runnable instead of extending Thread:
public class Test {
     public static class TestRun implements Runnable {
          public void run() {
               Socket s = new Socket();
               try { s.close(); } catch(Exception e) {}
     public static void main(String[] strArgs) throws Exception {
          for(;;) {
               (new Thread(new TestRun())).start();
               Thread.sleep(10);
}I've played with this a lot, and no matter what I do the Thread instance leaks if I create/use a socket inside it. The Socket instance gets cleaned up properly, as well as the TestRun instance when it's implementing Runnable, but the Thread instance never gets cleaned up. I can't see anything that would be holding a reference to it, so I can only imagine it's a problem with the JVM.
Please let me know if you can help me out with this,
Sean

Find out what is being leaked. In the sample programs, add something like this:
    static int loop_count;
        while (true) {
            if (++count >= 1000) {
          System.gc();
          Thread.sleep(500); // In case gc is async
          System.gc();
          Thread.sleep(500);
          System.exit(0);
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At program exit you get the file java.hprof.txt which contains something like this towards the end of the file:
          percent          live          alloc'ed stack class
rank   self accum     bytes objs     bytes objs trace name
    1 0.47% 0.47%       736    5       736     5 300036 char[]
    2 0.39% 0.87%       616    3       616     3 300000 java.lang.Thread
    3 0.30% 1.17%       472    2       472     2 300011 java.lang.ThreadLocal$ThreadLocalMap$Entry[]
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Other quickies to track allocation:
Print stats at program exit:
java -Xaprof YourProgram
If your JDK comes with the demo "heapViewer.dll" (or
heapViewer.so or whatever dynamic libraries are called on your system):
java -agentpath:"c:\Program Files\Java\jdk1.6.0\demo\jvmti\heapViewer\lib\heapViewer.dll" YourProgram
Will print out statistics at program exit or when you hit Control-\ (Unix) or Control-Break (Windows).

Memory leak using repeater tag

Hi,
I am trying to show a report that has 33113 rows using a repeater tag, but i get the following error: "An error has occurred: java.lang.OutOfMemoryError".
I am using the pageFlow to bind a ArrayList that already contains the rows.
Any ideas?
Thanks a lot.

Link to Microsoft Connect issue
https://connect.microsoft.com/VisualStudio/feedback/details/1045459/memory-leak-using-windows-accessibility-tools-microsoft-narrator-windows-speech-recognition-with-net-applications
Link to Microsoft Community post
http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/memory-leak-using-windows-accessibility-tools/8b32a81c-f828-415c-aec8-34e3106f9cb0?tm=1420469245606

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I'm almost certain my phone is the problem. I have gone through resetting the network settings a dozen times on my phone, even did it on my dad's. Now my texts are beginning to do the same when I text my fiance.
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Try:
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least ten seconds, until the Apple logo appears.
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www.dailyjanakantha.com
www.Facebook.com
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All your add-ons and plugins are up to date?
There has been a recent bug with Apples Java update:
https://bugzilla.mozilla.org/show_bug.cgi?id=700835
I have similar issues, although most of the time the browser only freezes for a short time.

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The Bluetooth on my 2012 Lexus doesn't work with my iPhone 5. My old android phone worked perfectly with my car. Even the tech guy at Lexus couldn't get it to work. What is apple doing to fix this.

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Radeon HD 5770 graphics card works perfectly with my MAC Pro 1,1 and Adobe CS6. However, Photoshop CC won't read the card drivers and says I need to reinstall them and disabled 3D funtions as a result. Anyone else with this issue?

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If you're using it in bright light, you may be getting sunlight through the back of the machine which can wash out the display. The Apple logo on the back of the lid is actually a cut-out that uses the systems back light to make it glow. Bright light (especially sunlight) can actually shine through the back. As the users in the login are typically in the middle of the display, this is the area most likely to be washed out as that is where the Apple logo is. You can try just putting your hand over the Apple logo on the back to block the sunlight when trying to log in.

Memory leak using Oracle ODBC connection. Works perfect with MSSQL.

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