I am using IBatis for my applicaiton. I am using IBatis 1.6.1 version.I thought it can handle all operations related to DB connections. But I am having little bit concern about this now. Sometimes I am getting the following error details to my log file,
Message
Unable to open connection to "MySQL, MySQL provider 5.0.8.1".
Source
IBatisNet.DataMapper
Stack
at IBatisNet.DataMapper.SqlMapSession.OpenConnection(String connectionString) at IBatisNet.DataMapper.SqlMapSession.OpenConnection() at IBatisNet.DataMapper.Commands.DbCommandDecorator.System.Data.IDbCommand.ExecuteReader() at IBatisNet.DataMapper.MappedStatements.MappedStatement.RunQueryForObject(RequestScope request, ISqlMapSession session, Object parameterObject, Object resultObject) at IBatisNet.DataMapper.MappedStatements.MappedStatement.ExecuteQueryForObject(ISqlMapSession session, Object parameterObject, Object resultObject) at IBatisNet.DataMapper.MappedStatements.MappedStatement.ExecuteQueryForObject(ISqlMapSession session, Object parameterObject) at IBatisNet.DataMapper.SqlMapper.QueryForObject(String statementName, Object parameterObject) at Sunya.VideoStreaming.Persistence.SchoolRepository.GetSchoolDetailsByUrl(String SchoolUrl) in D:\SVN\Sprint104\Persistence\SchoolRepository.cs:line 192 at EduVisionBasePage.GetSchoolUrl(School& _school) at ASP.global_asax.Application_BeginRequest(Object sender, EventArgs e) at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Message
Too many connections
Source
MySql.Data
Stack
at MySql.Data.MySqlClient.MySqlStream.OpenPacket() at MySql.Data.MySqlClient.NativeDriver.Authenticate411() at MySql.Data.MySqlClient.NativeDriver.Authenticate() at MySql.Data.MySqlClient.NativeDriver.Open() at MySql.Data.MySqlClient.MySqlPool.GetPooledConnection() at MySql.Data.MySqlClient.MySqlPool.GetConnection() at MySql.Data.MySqlClient.MySqlConnection.Open() at IBatisNet.DataMapper.SqlMapSession.OpenConnection(String connectionString)
Does someone has some idea about the error?
iBATIS has been around for quite a while (2001), and I have my doubts that there's a major bug in the MySQL provider. You mentioned that the error occurs "sometimes" - if it's intermittent, perhaps the problem lies elsewhere. "Unable to open connection" is likely to mean just that. Network errors, database outages, too many unreleased connections, authentication issues, etc. might all cause this error.
If you are using the JDBC transaction manager set the datasource to 'UNPOOLED' in you myBatisConfig.xml
<transactionManager type="JDBC"/>
<dataSource type="UNPOOLED">
.
.
.
</dataSource>
</environment>
That is the short answer. My hunch is The connection pool class is holding connections too long. Lowering the values for 'poolMaximunActiveConnection' and 'poolMaximunIdleConnections' may solve the problem.
Notes: using myBatis 3.0.3 Java, mySql Windows 5.5.9
search terms: iBatis, myBatis, 'Too many connections', mySQL
Related
currently my team and I are facing a strange problem. By now we have been spending 4 days searching for the solution.
We are developing a Java EE Web Application. We have been using Wildfly 14. Using Wildfly 14, there was no problem. Now we have upgraded Wildfly to Version 18 and afterwars to 19 and are now facing the following problem. As database we have an MS SQL.
The datasource looks like this:
<datasource jndi-name="java:/label" pool-name="Label">
<connection-url>jdbc:sqlserver://localhost:1433;DatabaseName=label</connection-url>
<driver>mssql-jdbc-8.2.2.jre8.jar</driver>
<security>
<user-name>label</user-name>
<password>label</password>
</security>
</datasource>
And the persistence.xml is the following:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="label-pu"
transaction-type="JTA">
<jta-data-source>java:/label</jta-data-source>
<properties>
<property name="hibernate.dialect"
value="org.hibernate.dialect.SQLServerDialect" />
</properties>
</persistence-unit>
We have a Bean in which we inject an EntityManager using the persistence-unit. When calling the bean's method we are getting an exception. The datasource is working. We checked that in the wildfly ui.
#Dependent
public class ConstructionService {
#PersistenceContext(unitName = "label-pu")
private EntityManager em;
public List<ConstructionRecordEntity> retrieveRecordForConstruction(int contructionId) {
String sqlSelectEmployeeId = "SELECT lfdnr, " + //
" erwkz1, " + //
" erwbe, " + //
" erwdat " + //
" FROM [label].[dbo].[aderw] where adnr = " + contructionId;//
return em//
.createNativeQuery(sqlSelectEmployeeId, ConstructionRecordEntity.class)//
.getResultList();
}
In the following you can see the stacktrace we are getting.
15:11:24,506 WARN [org.camunda.bpm.engine.rest.exception] (default task-1) ENGINE-REST-HTTP500 javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1515)
at org.hibernate.query.Query.getResultList(Query.java:132)
at de._._.ConstructionService.retrieveRecordForConstruction(ConstructionService.java:26)
...
Caused by: org.hibernate.exception.GenericJDBCException: Unable to acquire JDBC Connection
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:109)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.getPhysicalConnection(LogicalConnectionManagedImpl.java:136)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.connection(StatementPreparerImpl.java:50)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:149)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:151)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:2082)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2012)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1990)
at org.hibernate.loader.Loader.doQuery(Loader.java:949)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:351)
at org.hibernate.loader.Loader.doList(Loader.java:2787)
at org.hibernate.loader.Loader.doList(Loader.java:2770)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2604)
at org.hibernate.loader.Loader.list(Loader.java:2599)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:338)
at org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:2243)
at org.hibernate.internal.AbstractSharedSessionContract.list(AbstractSharedSessionContract.java:1069)
at org.hibernate.query.internal.NativeQueryImpl.doList(NativeQueryImpl.java:170)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1506)
... 306 more
Caused by: java.sql.SQLException: javax.resource.ResourceException: IJ000457: Unchecked throwable in managedConnectionReconnected() cl=org.jboss.jca.core.connectionmanager.listener.TxConnectionListener#c18c68f[state=DESTROYED managed connection=org.jboss.jca.adapters.jdbc.local.LocalManagedConnection#51667cf2 connection handles=0 lastReturned=1594905084472 lastValidated=1594904382991 lastCheckedOut=1594905084468 trackByTx=false pool=org.jboss.jca.core.connectionmanager.pool.strategy.OnePool#66e3a014 mcp=SemaphoreConcurrentLinkedQueueManagedConnectionPool#685b64a3[pool=Label] xaResource=LocalXAResourceImpl#671cf884[connectionListener=c18c68f connectionManager=bec01f1 warned=false currentXid=null productName=Microsoft SQL Server productVersion=15.00.2000 jndiName=java:/label] txSync=null]
at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:159)
at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:64)
at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
at org.hibernate.internal.NonContextualJdbcConnectionAccess.obtainConnection(NonContextualJdbcConnectionAccess.java:35)
at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:106)
... 325 more
Caused by: javax.resource.ResourceException: IJ000457: Unchecked throwable in managedConnectionReconnected() cl=org.jboss.jca.core.connectionmanager.listener.TxConnectionListener#c18c68f[state=DESTROYED managed connection=org.jboss.jca.adapters.jdbc.local.LocalManagedConnection#51667cf2 connection handles=0 lastReturned=1594905084472 lastValidated=1594904382991 lastCheckedOut=1594905084468 trackByTx=false pool=org.jboss.jca.core.connectionmanager.pool.strategy.OnePool#66e3a014 mcp=SemaphoreConcurrentLinkedQueueManagedConnectionPool#685b64a3[pool=Label] xaResource=LocalXAResourceImpl#671cf884[connectionListener=c18c68f connectionManager=bec01f1 warned=false currentXid=null productName=Microsoft SQL Server productVersion=15.00.2000 jndiName=java:/label] txSync=null]
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.reconnectManagedConnection(AbstractConnectionManager.java:1055)
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:792)
at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:151)
... 329 more
Caused by: javax.resource.ResourceException: IJ000461: Could not enlist in transaction on entering meta-aware object
at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.managedConnectionReconnected(TxConnectionManagerImpl.java:571)
at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.reconnectManagedConnection(AbstractConnectionManager.java:977)
... 331 more
Caused by: javax.transaction.SystemException: Error enlisting resource in transaction=Local transaction (delegate=TransactionImple < ac, BasicAction: 0:ffffc0a83801:34f7831:5f103dd7:8e1 status: ActionStatus.ABORT_ONLY >, owner=Local transaction context for provider JBoss JTA transaction provider)
at org.jboss.jca.core.connectionmanager.listener.TxConnectionListener$TransactionSynchronization.checkEnlisted(TxConnectionListener.java:957)
at org.jboss.jca.core.connectionmanager.listener.TxConnectionListener.enlist(TxConnectionListener.java:394)
at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.managedConnectionReconnected(TxConnectionManagerImpl.java:564)
... 332 more
Caused by: java.lang.Throwable: Failed to enlist
at org.jboss.jca.core.connectionmanager.listener.TxConnectionListener$TransactionSynchronization.enlist(TxConnectionListener.java:1001)
at org.jboss.jca.core.connectionmanager.listener.TxConnectionListener.enlist(TxConnectionListener.java:379)
... 333 more
I apreciate any hint.
We found out, that this is related to Camunda, when we first thought is was a pure Java EE Problem.
Using the mentioned Bean in a Rest Service works perfectly. Only when we inject the Bean into a Camunda JavaDelegate there is a problem.
We could solve this by adding
<system-properties>
<property name="com.arjuna.ats.arjuna.allowMultipleLastResources" value="true"/>
</system-properties>
to Wildfly Standalone.
It is working but we are getting a warning. Actually, this is necessary if you are using xa-datasource to have a transaction that surrounds multiple datasources. However, we do not have xa-datasource and we do not need a transaction that surrounds everything.
As far as we understand Camunda uses JTA to make the process jobs transaction safe. So when we are making a db query inside the JavaDelegate, there is a transaction inside a transaction. The first transaction is instantiated by Camunda the second one is instantiated by us by using JPA to query the database. Nevertheless, I do not understand. This scenario should be very common. So other people should have experienced this behavior, too? Or maybe it is related to the MS SQL Database?
The other thing that I do not understand is, that using JPA inside JavaDelegate worked with camunda 7.10 and in the latest version 7.13 it stopped working.
So, we found a workaround and we are not stuck anymore. Nonetheless, this workaround is not satisfying as we do not understand entirely what is going on underneath and we keep looking for an appropriate solution.
I was working with WildFly server long time ago so there is just my amateur thought:
There is something bad happened with transaction.
The issue point is connected with resource enlistement:
http://javadox.com/org.jboss.ironjacamar/ironjacamar-core-impl/1.2.7.Final/org/jboss/jca/core/connectionmanager/listener/TxConnectionListener.TransactionSynchronization.html#enlist()
According to the documentation, the database connection is also an "Transactional Resource". So, yes, we do not have an database connection for some reason.
May be someone close transaction for some reason? Try to check transaction status with injection of UserTransaction or with debugging of TxConnectionListener class (see the log)
If transaction is ok, then just debug from the point of error. Try to find the check that leads to an error. You can find the proper library to debug inside WildFly directory (with Far Manager, Double Commander and so on) and connect it to the IDE to be able to make a break point in the proper place.
I have an app engine java project and am using objectify. I get a stack trace sporadically in the "stack driver error reporting" view of the app engine web console related to putting an item into memcache. This is the code:
try {
TestItem t = new TestItem(...);
ofy().save().entity(t).now();
} catch (Exception e) {
}
and this is the error I'll see sporadically:
com.googlecode.objectify.cache.MemcacheServiceRetryProxy invoke: Memcache operation failed, giving up
java.lang.reflect.InvocationTargetException
at com.google.appengine.runtime.Request.process-i4dx9s2kED3CVcPe(Request.java)
at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:44)
at com.googlecode.objectify.cache.MemcacheServiceRetryProxy.invoke(MemcacheServiceRetryProxy.java:68)
at com.sun.proxy.$Proxy9.putAll(Unknown Source)
at com.googlecode.objectify.cache.KeyMemcacheService.putAll(KeyMemcacheService.java:91)
at com.googlecode.objectify.cache.EntityMemcache.empty(EntityMemcache.java:319)
at com.googlecode.objectify.cache.CachingAsyncDatastoreService$5.trigger(CachingAsyncDatastoreService.java:445)
at com.googlecode.objectify.cache.TriggerFuture.isDone(TriggerFuture.java:87)
at com.googlecode.objectify.cache.TriggerFuture.get(TriggerFuture.java:102)
at com.googlecode.objectify.impl.ResultAdapter.now(ResultAdapter.java:34)
at com.googlecode.objectify.util.ResultWrapper.translate(ResultWrapper.java:22)
at com.googlecode.objectify.util.ResultWrapper.translate(ResultWrapper.java:10)
at com.googlecode.objectify.util.ResultTranslator.nowUncached(ResultTranslator.java:21)
at com.googlecode.objectify.util.ResultCache.now(ResultCache.java:30)
at com.googlecode.objectify.util.ResultWrapper.translate(ResultWrapper.java:22)
at com.googlecode.objectify.util.ResultWrapper.translate(ResultWrapper.java:10)
at com.googlecode.objectify.util.ResultTranslator.nowUncached(ResultTranslator.java:21)
at com.googlecode.objectify.util.ResultCache.now(ResultCache.java:30)
at com.me.test.Test.putSomethinInMemcache(Test.java:13)
...
Caused by: com.google.appengine.api.memcache.MemcacheServiceException: Memcache putAll: Unknown exception setting 1 keys
at com.google.appengine.api.memcache.MemcacheServiceApiHelper$RpcResponseHandler.handleApiProxyException(MemcacheServiceApiHelper.java:69)
at com.google.appengine.api.memcache.AsyncMemcacheServiceImpl$RpcResponseHandlerForPut.handleApiProxyException(AsyncMemcacheServiceImpl.java:349)
at com.google.appengine.api.memcache.MemcacheServiceApiHelper$1.absorbParentException(MemcacheServiceApiHelper.java:111)
at com.google.appengine.api.utils.FutureWrapper.handleParentException(FutureWrapper.java:52)
at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:91)
at com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:89)
at com.google.appengine.api.memcache.MemcacheServiceImpl.quietGet(MemcacheServiceImpl.java:26)
at com.google.appengine.api.memcache.MemcacheServiceImpl.putAll(MemcacheServiceImpl.java:115)
... 52 more
It doesn't appear to be caught in the try-statement. I just see it in that admin console mentioned earlier.
Does anyone know what this means, or how I can catch it? My main worry is that there could be an old copy of the object stuck in memcache after this operation fails.
Using objectify 5.1.10.
Thanks
This is a get() operation. If memcache is unavailable during a get() operation, Objectify just reads from the datastore. The error is logged and performance suffers somewhat but the app marches on.
It is technically possible to have errors during write operations (any save() clears the cache entry; reads will repopulate the cache). This could in theory leave stale info in the cache. There's nothing that can really be done about this - if you can't clear the cache entry, it's going to be stuck there. My advice is that if you have sensitive data but want it cached, put a reasonable timeout on the cache entry (#Cache(expirationSeconds=60) or whatnot).
I'm trying to browse the deployed cube, but it doesn't work. I have this error: "Element "return" was not found. Line 5, position 2". I've made the connection with database and it worked (I saw that when I created dimensions and cubes). Also the deployment completed successfully. How can I fix this problem?
Advanced Information:
Program Location: at System.Xml.XmlReader.ReadStartElement(String
name) at
Microsoft.AnalysisServices.AdomdClient.XmlaReader.ReadStartElement(String
name) at
Microsoft.AnalysisServices.AdomdClient.XmlaClient.SupportsProperty(String
propName) at
Microsoft.AnalysisServices.AdomdClient.XmlaClient.Connect(ConnectionInfo
connectionInfo, Boolean beginSession) at
Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Connect(Boolean
toIXMLA) at
Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Microsoft.AnalysisServices.AdomdClient.AdomdConnection.IXmlaClientProviderEx.ConnectIXmla()
at
Microsoft.AnalysisServices.AdomdClient.AdomdConnection.ConnectToIXMLA(Boolean
createSession) at
Microsoft.AnalysisServices.AdomdClient.AdomdConnection.Open() at
Microsoft.AnalysisServices.Browse.ConnectionsManagerBase.Connect()
at
Microsoft.AnalysisServices.Browse.DimensionBrowser.ConnectionManager.Connect()
at
Microsoft.AnalysisServices.Browse.DimensionBrowser.EstablishConnection()
at Microsoft.AnalysisServices.Browse.DimensionBrowser..ctor(String
nameOfDimension, Object dimensionObject, IServiceProvider
iserviceProvider, DesignerPageRelevantData designerPageRelevantData,
UserContextData securityContextData) at
Microsoft.AnalysisServices.Browse.DimensionBrowserHostControl.CreateBrowser()
at Microsoft.AnalysisServices.Browse.BrowserHostControl.LoadBrowser()
Thanks in advance
I also ran into this issue - it seems to have something to do with the connection timing out. Changing the connection time-out value in the connection options to a higher value (30, 60, etc) fixed the issue.
i have a transactional poller (spring 3.1.2 and spring-integration 2.2.3) to ensure that messages will be redelivered if the transaction is rolled back by an exception
<int:outbound-channel-adapter id="obca" ref="notificationHandler"
method="handle" channel="notificationChannel" >
<int:poller max-messages-per-poll="100" fixed-delay="6000"
time-unit="MILLISECONDS">
<int:transactional isolation="DEFAULT" />
</int:poller>
</int:outbound-channel-adapter>
this works fine when unit testing with an H2 database, the message is redelivered as long as the method throws an exception
#Transactional
public void handle(Message<MyPayload> message)
but when i use the sql-server we use in production (ms-sqlserver, which uses READ COMMITTED SNAPSHOT as isolation level if that is important) the redelivery on exception does not work. any hints why this may be?
EDIT:
i tested with TRACE logging but couldn't find suspicious log messages, finally i got it to work. i declared a separate dataSource(same config as normal database) and transactionManager org.springframework.jdbc.datasource.DataSourceTransactionManager instead of my normal org.springframework.orm.jpa.JpaTransactionManager.
I have a moderately complex report consisting of a lot of subreports.
One particular one is causing an issue: if you run it standalone, it works fine. If you integrate it as a subreport, it refuses to allow you to export to Excel format (from Preview), with the following error:
An error occurred during local report processing.
An error occurred during rendering of the report.
An error occurred during rendering of the report.
Object reference not set to an instance of an object.
Producing to any other format works fine. Most of my Googling thus far has said "Reinstall Reporting Services", which I really don't want to do (I reinstalled for a previous issue, and it took me a good day or so to get everything happy again - possibly more), especially given it's not a guaranteed fix.
I don't know if it's significant, but the reports do make us of Dundas Charts, which may make it more difficult to parse.
Anyone know a better solution?
Update:
When I try Exporting to Excel on the report server, it gives me this:
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Exception: Object reference not set to an instance of an object.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[Exception: Object reference not set to an instance of an object.]
[Exception: An error occurred during rendering of the report.]
[Exception: An error occurred during rendering of the report.]
Microsoft.Reporting.WebForms.ServerReport.ServerUrlRequest(Boolean isAbortable, String url, Stream outputStream, String& mimeType, String& fileNameExtension) +520
Microsoft.Reporting.WebForms.ServerReport.InternalRender(Boolean isAbortable, String format, String deviceInfo, NameValueCollection urlAccessParameters, Stream reportStream, String& mimeType, String& fileNameExtension) +936
Microsoft.Reporting.WebForms.ServerReport.Render(String format, String deviceInfo, NameValueCollection urlAccessParameters, Stream reportStream, String& mimeType, String& fileNameExtension) +28
Microsoft.Reporting.WebForms.ServerReportControlSource.RenderReport(String format, String deviceInfo, NameValueCollection additionalParams, String& mimeType, String& fileExtension) +85
Microsoft.Reporting.WebForms.ExportOperation.PerformOperation(NameValueCollection urlQuery, HttpResponse response) +143
Microsoft.Reporting.WebForms.HttpHandler.ProcessRequest(HttpContext context) +152
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
I ran into the same issue with the below statement. Everything works fine as expected except when exporting to excel.
=iif(ReportItems!textbox343.Value>ReportItems!textbox344.Value or ReportItems!textbox346.Value>ReportItems!textbox347.Value,"Yes","No")
Here is the fix. Added braces and voila voodoo magic it works.
=iif((ReportItems!textbox343.Value>ReportItems!textbox344.Value) or (ReportItems!textbox346.Value>ReportItems!textbox347.Value),"Yes","No")
I believe that the Excel export of a report containing subreports is a known issue in SSRS 2005 and is addressed in 2008. I don't know if the upgrade is an option for you?