Memory Leak using CertOpenStore on Windows 2008 R2

I have a program (runs both 32 and 64 bit ) that when using CertOpenStore results in a memory leak on Windows 2008 R2 only (I haven't tried 2012, but this code has run for years on 2000, 2003, 2008 without issues)
Sample code to reproduce the issue:
int main( int argc, char** argv )
HCERTSTORE store;
int go = 1;
while( go ){
store = CertOpenStore(
CERT_STORE_PROV_SYSTEM_A,
0,
0,
CERT_SYSTEM_STORE_LOCAL_MACHINE | CERT_STORE_OPEN_EXISTING_FLAG,
"MY" );
if( store ){
//if( !CertCloseStore( store , CERT_CLOSE_STORE_CHECK_FLAG ) ){
if( !CertCloseStore( store , CERT_CLOSE_STORE_FORCE_FLAG ) ){
if( GetLastError() == CRYPT_E_PENDING_CLOSE ){
printf( "!" );
else{
go = 0;
else{
go = 0;
Sleep( 10 );
return 0;
The callstack for allocations pretty much are all like this (this is from a 32 bit process on a 2008R2 box)
HEAP_ENTRY Size Prev Flags UserPtr UserSize - state
02e75af0 000f 0000 [00] 02e75b08 0005e - (busy)
7724dff2 ntdll!RtlAllocateHeap+0x00000274
745f6017 AcLayers!malloc+0x00000079
7460dc96 AcLayers!NS_VirtualRegistry::MakePath+0x00000056
7460e817 AcLayers!NS_VirtualRegistry::CVirtualRegistry::OpenKeyW+0x000000a9
7460f21a AcLayers!NS_VirtualRegistry::APIHook_RegOpenKeyExW+0x00000036
743d2641 AcGenral!NS_WRPMitigation::APIHook_RegOpenKeyExW+0x00000024
7527a246 crypt32!RegOpenHKCUKeyExU+0x00000055
7527de26 crypt32!OpenSubKeyEx+0x00000108
7527e4d8 crypt32!OpenSubKey+0x00000015
7527ed88 crypt32!OpenSystemRegPathKey+0x00000033
75281a2f crypt32!EnumPhysicalStore+0x00000162
75281d0e crypt32!I_CertDllOpenSystemStoreProvW+0x0000015c
752c9fce crypt32!I_CertDllOpenSystemStoreProvA+0x0000006c
7527e49a crypt32!CertOpenStore+0x0000010e
Anyone have any ideas of a hotfix available for this?
thanks

Might ask them here about this.
Windows Desktop Dev forums on MSDN
Regards, Dave Patrick ....
Microsoft Certified Professional
Microsoft MVP [Windows]
Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

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Sometimes it returns wrong value (0 for the count parameter), sometimes (rarely) the server stops working.
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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:
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CREATE TABLE "Products" (
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ALTER TABLE "Products"
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ALTER TABLE "Products"
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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"
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ALTER TABLE "Languages"
ADD CONSTRAINT "PK_Languages"
PRIMARY KEY ("LanguageId")
ALTER TABLE "Languages"
ADD CONSTRAINT "UK_Languages"
UNIQUE ("MnemonicId")
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CREATE TABLE "ProductDesc" (
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ALTER TABLE "ProductDesc"
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ADD CONSTRAINT "PK_ProductDesc"
PRIMARY KEY ("ProductId", "LanguageId")
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FOREIGN KEY("ProductId") REFERENCES "Products" ("ProductId")
ALTER TABLE "ProductDesc"
ADD CONSTRAINT "FK_ProductDesc2"
FOREIGN KEY("LanguageId") REFERENCES "Languages" ("MnemonicId")
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CREATE OR REPLACE VIEW "vwProducts"
AS
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          , "ProductDesc"."Description"
          , "ProductDesc"."DescriptionText"
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CREATE OR REPLACE FUNCTION "fnProductFilter" (
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     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;
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--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;';
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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

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I love iTunes when it works. But having to constantly kill and relaunch the app throughout the day is bringing me down.
Searching for a fix for this on the internet just surfaces more and more complaints about this problem - but without a solution.
Having written shrinkwrapped software for end users as well as for large corporations and governments for more than 25 years I know a thing or two about software. A leak like this should take no more than a day or two to locate using modern software tools and double that to fix it. So why with each new version of iTunes does this problem persist? iTunes for Windows is the flagship software product Apple makes for non-Mac users - yet they continue to pass up each opportunity they have had over the years with each new release to fix this issue. Why is this?
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l_emp_first_name VARCHAR2(100);
l_emp_last_name VARCHAR2(100);
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END get_employees;
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Replying to both of you -
Line 206 is the first call to xslprocessor.valueof:
LINE TEXT
206 l_emp_id := dbms_xslprocessor.valueOf(l_node, 'EMPLOYEEID');
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Here is the contents of V$TEMPORARY_LOBS immediately after the crash:
SID CACHE_LOBS NOCACHE_LOBS ABSTRACT_LOBS
132 0 0 0
148 19 1 0
SID 132 is a SYS session and SID 148 is mine.
I've discovered with further testing that if I comment out all of the xslprocessor.valueof calls except for the first one the code will complete successfully. It executes the valueof call 99,463 times. If I then uncomment one of those additional calls, we double the number of executions to a theoretical 198,926 (which is greater than the 161,500 point where it usually crashes) and it runs out of memory again.

Memory leak using CWGraph

I have a memory leak problem using the CWGraph control.
I have an SDI application (MFC using Measurement Studio) and I generate dynamicaly a dialog containing a 2D Graph, and I use the OnTimer() of the dialog to generate data and to update the graph, with a timer of 50ms. In OnTimer() function I have a loop to generate
and to update two plots on the graph. When I call a method of the graph (for example for changing the color of the plot or for updating a plot (using PlotXvsY)), I have a periodic increasing of memory with a fixed amount of memory (4k). In the same OnTimer() function I update also some CWSlide controls without memory leaks.
If I comment the line that call a method of graph
(ex. m_Graph.Plots.Item(1)....), the code works wi
thout memory leaks.
I'll apreciate any suggestion about this problem.

I had the same memory leak problem with my program as well. I do not think it is because of using CWGraph. Memory leaks occur when you allocate memory and did not free them. The problem will accumulate and crashed randomly (sometime it crashed when you just move mouse around). Try this: if the program does not crash (memory leak crash) on the first time it compiles and runs, it is probable has nothing to do with the CWGraph. On the second and third run, if you did not free variable, the program will usually crashed. If your program crashed on the first time it runs, the problem might be something else.

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

Memory Leak Lenovo X201 and Windows 8

Hi,
I'm having a memory leak issue with my X201 and Windows 8. My system starts almost without memory, taking 6.7 of 7.8 GB RAM.
More people seem to have the same problem:
http://answers.microsoft.com/en-us/windows/forum/windows_cp-windows_programs/windows-8-rtm-memory-le...
I have installed the available beta drivers but they don't help. Any advice?
Spec:
- Windows 8 Enterprise
- Intel Core i7-620M Processor (2.66GHz, 4MB L3, 1066MHz FSB)
- Genuine Windows 7 Professional 64
- Genuine Windows 7 Professional 64 US English
- 12.1" WXGA LED Panel, 2x2 UltraConnect II antenna; with Camera and Wireless Broadband Upgradeable
- 8 GB PC3-8500 DDR3 SDRAM 1067MHz SODIMM Memory (2 DIMM)
- Keyboard UK English
- TrackPoint with Fingerprint Reader
- 128 GB Solid State Drive, Serial ATA
- 5-1 Media Card Reader and Modem
- ThinkPad X200 Series 9 cell Li-Ion Battery (up to 5 hours life)
- Country Pack United Kingdom with Line cord & 65W AC adapter
- Bluetooth w/ antenna
- Intel Centrino Advanced-N 6200 (2x2 AGN)
- Integrated Wireless Wide Area Network upgradable

Does Windows 8 manage memory differently?

Memory leak using GWT 1.4 and JDK 1.5

We are running the following:
OS : Solaris 5.10
WebLogic version: 10.0
JDK : Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_14-b03)
Java HotSpot(TM) Server VM (build 1.5.0_14-b03, mixed mode)
GWT : 1.4
Oracle : 10g
We have found memory leak with the above configuration.
After running 1 session we are facing memory leak. The used Java heap is 4% higher than the one used after we conduct
our memory tests for 1 user.
Similarly, after running 5 concurrent sessions we are also facing memory leak where Java heap memory is utilised more
by about 4%.
I have used JRockit JDK 1.5 for figuring out memory leak. I have not found a memory leak in any of the modules
developed by us.
The memory leak issue is we think concerned with the version of JDK, Weblogic, Sun OS.
Can somebody please suggest whether we can use the version as mentioned above?
Any help on this front will be appreciated.

gc log:
#log information
JAVA_OPTS="$JAVA_OPTS -verbose:gc "
JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCDetails "
JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCTimeStamps "
JAVA_OPTS="$JAVA_OPTS -XX:+DisableExplicitGC "
JAVA_OPTS="$JAVA_OPTS -Xloggc:/path/to/gclog`date +%Y.%m.%d-%H:%M:%S`.log "Check sun papers for garbage collecting tips.
>
Is there any other way we can detect memory leak?
>
You have to profile your Application Server like you did with your own code.
regards
slowfly

Memory leak using thin client

Subject: Memory Leak while using thin client.
From: [email protected] (Alon Albert)
Newsgroups: weblogic.developer.interest.jndi
I have a small test program that causes a memory leak while connecting
to a weblogic server. The code is appended to the end of the msg. The
problem is definatly caused by the InitialContext creation.
Even if I explicitly call the InitialContext.close() method, the
problem persists. I realize I can avoid the problem by using a one
time connection outside the loop but keep in mind that this is only a
test program. The full application REQUIRES me to do a full
reconnection each time it is accessed.
I have read in a previous simmilar post that the problem mught be RMI
related. Is anything I can do about this?
package jmxleak;
import java.net.*;
import java.util.*;
import javax.management.*;
import javax.naming.*;
public class Main {
String host;
String username;
String password;
MBeanServer mbs;
public static void main(String[] args) {
while (true) {
Main main = new Main(args[0], args[1], args[2]);
main.connect();
main = null;
System.out.println("Collecting garbage.");
System.gc();
public Main(String host, String username, String password) {
this.host = host;
this.username = username;
this.password = password;
private void connect() {
try {
System.out.print("Connecting..., ");
Thread.currentThread().setContextClassLoader(new
URLClassLoader(new URL[] { new URL("http://" + host + "/classes/")}));
Hashtable env = new Hashtable();
env.put("java.naming.factory.initial",
"weblogic.jndi.WLInitialContextFactory");
env.put("java.naming.provider.url", "t3://" + host);
if (username.length() > 0 && password.length() > 0) {
env.put("java.naming.security.principal", username);
env.put("java.naming.security.credentials", password);
System.out.print("Creating context..., ");
InitialContext ctx = new InitialContext(env);
catch (Exception e) {
e.printStackTrace();

Subject: Memory Leak while using thin client.
From: [email protected] (Alon Albert)
Newsgroups: weblogic.developer.interest.jndi
I have a small test program that causes a memory leak while connecting
to a weblogic server. The code is appended to the end of the msg. The
problem is definatly caused by the InitialContext creation.
Even if I explicitly call the InitialContext.close() method, the
problem persists. I realize I can avoid the problem by using a one
time connection outside the loop but keep in mind that this is only a
test program. The full application REQUIRES me to do a full
reconnection each time it is accessed.
I have read in a previous simmilar post that the problem mught be RMI
related. Is anything I can do about this?
package jmxleak;
import java.net.*;
import java.util.*;
import javax.management.*;
import javax.naming.*;
public class Main {
String host;
String username;
String password;
MBeanServer mbs;
public static void main(String[] args) {
while (true) {
Main main = new Main(args[0], args[1], args[2]);
main.connect();
main = null;
System.out.println("Collecting garbage.");
System.gc();
public Main(String host, String username, String password) {
this.host = host;
this.username = username;
this.password = password;
private void connect() {
try {
System.out.print("Connecting..., ");
Thread.currentThread().setContextClassLoader(new
URLClassLoader(new URL[] { new URL("http://" + host + "/classes/")}));
Hashtable env = new Hashtable();
env.put("java.naming.factory.initial",
"weblogic.jndi.WLInitialContextFactory");
env.put("java.naming.provider.url", "t3://" + host);
if (username.length() > 0 && password.length() > 0) {
env.put("java.naming.security.principal", username);
env.put("java.naming.security.credentials", password);
System.out.print("Creating context..., ");
InitialContext ctx = new InitialContext(env);
catch (Exception e) {
e.printStackTrace();

Memory leak using 10.2.0.3 OCI client on Solaris

Hi,
We are using OCI client libraries to connect our C++ program to the Oracle Database. The program does a lot of selects, inserts and SP calls.
Oracle client and Oracle server both are 10.2.0.3.
We have been observing a memory leak of 4M bytes in the C++ program every few minutes since last few days. On debugging through Purify, libumem, and Sun Studio 12, we finally managed to narrow down the problem to the Oracle client library OCI calls.
The Sun Studio leak check shows the following -
Leak #37, Instances = 157, Bytes Leaked = 655004
kpummapg + 0x00000098
kghgex + 0x00000648
kghfnd + 0x000005BC
kghalo + 0x00000A6C
kghgex + 0x000003BC
kghfnd + 0x000005BC
kghalo + 0x00000A6C
kghgex + 0x000003BC
kghfnd + 0x000005BC
kghalo + 0x00000A6C
kpuhhalo + 0x00000558
kpugdesc + 0x00000AD4
kpugparm + 0x00000374
COCIResultSet::InterpretData() + 0x000001B4
COCIResultSet::COCIResultSet(COCIStatement*,OCIStmt*,OCIError*) + 0x000000A4
COCIStatement::PrepareResult() + 0x00000190
A select is executed, a resultset is fetched and the resultset is immeidately closed. The same piece of code has been running at various production systems without any problems. Most of the other sites are either 10.2.0.4 or 9i.
On searching Metalink and various other forums, I found similar issues faced in 10.2.0.1.
Could someone advise if there are any bugs corresponding to this which have been closed. Would upgrading to 10.2.0.4 solve the problem?
Thanks.

Hi,
Apparently a similar issue is being discussed over here:
Re: Memory Leak
Hope it helps.
Regards,
Naveed.

Memory leak using 10.2.0.3 OCCI client on Solaris 10

Hi,
We are using OCCI client libraries to connect our C++ program to the Oracle Database. The program does a lot of selects, inserts and SP calls.
Oracle client and Oracle server both are 10.2.0.3 on Solaris 10.
We have been observing a memory leak of 4M bytes in the C++ program every few minutes since last few days. On debugging through Purify, libumem, and Sun Studio 12, we finally managed to narrow down the problem to the Oracle client library OCI calls.
The Sun Studio leak check shows the following -
Leak #37, Instances = 157, Bytes Leaked = 655004
kpummapg + 0x00000098
kghgex + 0x00000648
kghfnd + 0x000005BC
kghalo + 0x00000A6C
kghgex + 0x000003BC
kghfnd + 0x000005BC
kghalo + 0x00000A6C
kghgex + 0x000003BC
kghfnd + 0x000005BC
kghalo + 0x00000A6C
kpuhhalo + 0x00000558
kpugdesc + 0x00000AD4
kpugparm + 0x00000374
COCIResultSet::InterpretData() + 0x000001B4
COCIResultSet::COCIResultSet(COCIStatement*,OCIStmt*,OCIError*) + 0x000000A4
COCIStatement::PrepareResult() + 0x00000190
A select is executed, a resultset is fetched and the resultset is immeidately closed. The same piece of code has been running at various production systems without any problems. Most of the other sites are either 10.2.0.4 or 9i.
On searching Metalink and various other forums, I found similar issues faced in 10.2.0.1.
Could someone advise if there are any bugs corresponding to this which have been closed. Would upgrading to 10.2.0.4 solve the problem?
Thanks.

Please ... one post and one post only in the group most appropriate to your inquiry. Please open an SR at metalink.

Memory Leak using CertOpenStore on Windows 2008 R2

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