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Re: Frontbase pessimistic locking
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Re: Frontbase pessimistic locking

  • Subject: Re: Frontbase pessimistic locking
  • From: Chuck Hill <email@hidden>
  • Date: Tue, 13 Apr 2010 09:16:09 -0700
Your database URL is missing the isolation and locking discipline. It should look like this:

jdbc:FrontBase://localhost/DatabaseName/isolation=read_committed/ locking=optimistic


Chuck


On Apr 13, 2010, at 12:19 AM, Szántai Károly wrote:

Hi list!

Can somebody explain what the problem is and how to fix (or prevent) it?

Thanks

Karoly

Exception caught, EvaluateExpression failed: <com.webobjects.jdbcadaptor._FrontBasePlugIn$FrontbaseExpression: "SELECT t0."NEV", t0."OID" FROM "TNET_CELCSOPORT" t0 INNER JOIN "TNET_CIKK_CELCSOPORT" T1 ON t0."OID" = T1."OID_CELCSOPORT" INNER JOIN "TNET_CIKK" T2 ON T1."OID_CIKK" = T2."OID" WHERE T2."OID" = 3349" withBindings: >:
Next exception:SQL State:00 subclass = " -- error code: 380 -- msg: Exception condition 380. Pessimistic locking: multiple transaction conflict detected (deadlock).
Next exception:SQL State:40 subclass = 00 -- error code: 363 -- msg: Exception condition 363. Transaction rollback. extra info: {CurrentComponentHierarchy = ("Main", "hu.tactus.tnetbasecomponents.TNETKategoriaDisplayComponent", "hu.tactus.tnetbasecomponents.TNETCikkDisplay"); user-agent = "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) "; CurrentComponent = "hu.tactus.tnetbasecomponents.TNETCikkDisplay"; Headers = {remote_host = "66.249.71.209"; server_software = "Apache/2.2.13 (Unix) mod_ssl/2.2.13 OpenSSL/0.9.7l DAV/2"; user-agent = "Mozilla/ 5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"; document_root = "/Library/WebServer/Documents/hce"; server_name = "www.healthcareedu.hu "; accept = "*/*"; x-webobjects-adaptor-version = "Apache"; from = "googlebot(at)googlebot.com"; host = "www.healthcareedu.hu"; remote_addr = "66.249.71.209"; x-webobjects-request-id = "4bb06d990000004a00000002"; script_uri = "http://www.healthcareedu.hu/etieng/272 "; script_url = "/etieng/272"; x-webobjects-request-method = "GET"; accept-encoding = "gzip,deflate"; if-modified-since = "Sat, 10 Apr 2010 12:40:10 GMT"; remote_port = "65051"; script_filename = "/cgi- bin"; server_admin = "email@hidden"; server_port = "0"; connection = "close"; }; CurrentPage = "Main"; Bundles = {TACAddressLogic = "3.0.0"; ERExtensions = "5.0.0.8934"; JavaWebObjects = "5.4.3"; ERJars = "5.0.0.8934"; ERJavaMail = "5.0.0.8934"; JavaEOAccess = "5.4.3"; TACRBAC = "3.0.0"; TACExtensions = "3.0.1"; JavaJDBCAdaptor = "5.4.3"; FrontBasePlugIn = "5.0.0.8934"; TANMediaLibraryComponents = "3.0.1"; TNETBaseComponents = "3.0.3"; TACEOPrototypes = ""; EtiEngSite = ""; JavaWOExtensions = "5.0.0.8934"; TANMediaLibrary = "3.0.1"; JavaXML = "5.4.2"; TNETBase = "3.0.4"; JavaFoundation = "5.4.3"; JavaEOControl = "5.4.2"; }; URL = "/cgi-bin/WebObjects/ etiengsite.woa/1/wa/oldalnev?kategorianev=272"; }Exception condition 380. Pessimistic locking: multiple transaction conflict detected (deadlock).at com .frontbase .jdbc.FBJErrorMetaData.errorMessageAtIndex(FBJErrorMetaData.java:162)
at com .frontbase .jdbc.FBJErrorMetaData.getExceptionChain(FBJErrorMetaData.java:194)
at com.frontbase.jdbc.FBJStatement.checkMetaData(FBJStatement.java: 472)
at com.frontbase.jdbc.FBJStatement.execute(FBJStatement.java:175)
at com .webobjects .jdbcadaptor .JDBCChannel ._bindInputVariablesWithBindingsAndExecute(JDBCChannel.java:272)
at com .webobjects .jdbcadaptor.JDBCChannel._evaluateExpression(JDBCChannel.java:337)
at com .webobjects .jdbcadaptor.JDBCChannel.evaluateExpression(JDBCChannel.java:296)
at com .webobjects .jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:220)
at com .webobjects .eoaccess .EODatabaseChannel ._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java: 897)
at com .webobjects .eoaccess .EODatabaseChannel .selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
at com .webobjects .eoaccess .EODatabaseContext ._objectsWithFetchSpecificationEditingContext (EODatabaseContext.java:3055)
at com .webobjects .eoaccess .EODatabaseContext .objectsWithFetchSpecification(EODatabaseContext.java:3195)
at com .webobjects .eocontrol .EOObjectStoreCoordinator .objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
at com .webobjects .eocontrol .EOEditingContext .objectsWithFetchSpecification(EOEditingContext.java:4069)
at com .webobjects .eoaccess .EODatabaseContext.objectsForSourceGlobalID(EODatabaseContext.java: 4084)
at com .webobjects .eocontrol .EOObjectStoreCoordinator .objectsForSourceGlobalID(EOObjectStoreCoordinator.java:634)
at com .webobjects .eocontrol .EOEditingContext.objectsForSourceGlobalID(EOEditingContext.java: 3923)
at com .webobjects .eoaccess.EODatabaseContext._fireArrayFault(EODatabaseContext.java: 4245)
at com .webobjects .eoaccess .EOAccessArrayFaultHandler .completeInitializationOfObject(EOAccessArrayFaultHandler.java:77)
at com .webobjects .eocontrol ._EOCheapCopyMutableArray.willRead(_EOCheapCopyMutableArray.java:45)
at com .webobjects .eocontrol ._EOCheapCopyMutableArray .objectEnumerator(_EOCheapCopyMutableArray.java:115)
at hu .tactus .tacextensions .TACEOAccessUtilities .refreshEOAndRelationships(TACEOAccessUtilities.java:151)
at hu .tactus .tnetbasecomponents.TNETCikkDisplay.cikk(TNETCikkDisplay.java:65)
at sun.reflect.GeneratedMethodAccessor74.invoke(Unknown Source)
at sun .reflect .DelegatingMethodAccessorImpl .invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:592)
at com.webobjects.foundation.NSKeyValueCoding$ValueAccessor $1.methodValue(NSKeyValueCoding.java:636)
at com.webobjects.foundation.NSKeyValueCoding $_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)
at com.webobjects.foundation.NSKeyValueCoding $DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)
at com.webobjects.appserver.WOComponent.valueForKey(WOComponent.java: 1736)
at com.webobjects.foundation.NSKeyValueCoding $Utility.valueForKey(NSKeyValueCoding.java:447)
at com.webobjects.foundation.NSKeyValueCodingAdditions $ DefaultImplementation .valueForKeyPath(NSKeyValueCodingAdditions.java:216)
at com .webobjects.appserver.WOComponent.valueForKeyPath(WOComponent.java: 1804)
at com .webobjects .appserver ._private .WOKeyValueAssociation.valueInComponent(WOKeyValueAssociation.java: 50)
at er .extensions .components._private.ERXWOString.appendToResponse(ERXWOString.java: 66)
at com .webobjects .appserver ._private .WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)
at com .webobjects .appserver ._private.WODynamicGroup.appendToResponse(WODynamicGroup.java:136)
at com .webobjects.appserver.WOComponent.appendToResponse(WOComponent.java: 1122)
at com .webobjects .appserver ._private .WOComponentReference.appendToResponse(WOComponentReference.java:135)
at com .webobjects .appserver ._private .WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)
at er .extensions .components .conditionals .ERXWOConditional.appendChildrenToResponse(ERXWOConditional.java:125)
at er .extensions .components .conditionals .ERXWOConditional.appendToResponse(ERXWOConditional.java:119)
at com .webobjects .appserver ._private .WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)
at com .webobjects .appserver ._private.WODynamicGroup.appendToResponse(WODynamicGroup.java:136)
at com .webobjects.appserver.WOComponent.appendToResponse(WOComponent.java: 1122)
at com .webobjects .appserver ._private .WOComponentReference.appendToResponse(WOComponentReference.java:135)
at com .webobjects .appserver ._private .WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)
at com .webobjects .appserver ._private.WODynamicGroup.appendToResponse(WODynamicGroup.java:136)
at com .webobjects .appserver ._private .WOComponentContent.appendToResponse(WOComponentContent.java:51)
at com .webobjects .appserver ._private .WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)
at com .webobjects .appserver ._private.WODynamicGroup.appendToResponse(WODynamicGroup.java:136)
at com .webobjects.appserver.WOComponent.appendToResponse(WOComponent.java: 1122)
at com .webobjects .appserver ._private .WOComponentReference.appendToResponse(WOComponentReference.java:135)
at com .webobjects .appserver ._private .WODynamicGroup.appendChildrenToResponse(WODynamicGroup.java:126)
at com .webobjects .appserver ._private.WODynamicGroup.appendToResponse(WODynamicGroup.java:136)
at com .webobjects.appserver.WOComponent.appendToResponse(WOComponent.java: 1122)
at Main.appendToResponse(Main.java:50)
at com .webobjects .appserver.WOComponent._appendPageToResponse(WOComponent.java:1574)
at com .webobjects .appserver.WOComponent._generateResponseInContext(WOComponent.java: 1543)
at com .webobjects.appserver.WOComponent.generateResponse(WOComponent.java: 1538)
at com .webobjects .appserver ._private .WOActionRequestHandler._handleRequest(WOActionRequestHandler.java: 278)
at com .webobjects .appserver ._private .WOActionRequestHandler.handleRequest(WOActionRequestHandler.java: 158)
at er .extensions .appserver .ERXDirectActionRequestHandler .handleRequest(ERXDirectActionRequestHandler.java:123)
at com .webobjects .appserver.WOApplication.dispatchRequest(WOApplication.java:1687)
at er .extensions .appserver .ERXApplication.dispatchRequestImmediately(ERXApplication.java:1737)
at er .extensions .appserver.ERXApplication.dispatchRequest(ERXApplication.java:1702)
at com .webobjects .appserver._private.WOWorkerThread.runOnce(WOWorkerThread.java:144)
at com .webobjects .appserver._private.WOWorkerThread.run(WOWorkerThread.java:226)
at java.lang.Thread.run(Thread.java:613)

Exception condition 363. Transaction rollback. 


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--
Chuck Hill             Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/products/practical_webobjects







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