Hello, This is the error I get Nested Exception:-
java.sql.SQLException: Error occurred while initializing the EXCEL datasource at org.wso2.carbon.dataservices.core.description.query.SQLQuery.processPreNormalQuery(SQLQuery.java:832) at org.wso2.carbon.dataservices.core.description.query.SQLQuery.runPreQuery(SQLQuery.java:2301) at org.wso2.carbon.dataservices.core.description.query.Query.execute(Query.java:275) at org.wso2.carbon.dataservices.core.engine.CallQuery.executeElement(CallQuery.java:188) at org.wso2.carbon.dataservices.core.engine.OutputElement.execute(OutputElement.java:89) at org.wso2.carbon.dataservices.core.description.operation.Operation.execute(Operation.java:61) at org.wso2.carbon.dataservices.core.engine.DataService.invoke(DataService.java:474) at org.wso2.carbon.dataservices.core.engine.DSOMDataSource.execute(DSOMDataSource.java:96) ... 46 more Caused by: DS Fault Message: Error in opening DBMS connection. DS Code: UNKNOWN_ERROR Nested Exception:- java.sql.SQLException: Error occurred while initializing the EXCEL datasource at org.wso2.carbon.dataservices.core.description.query.SQLQuery.createConnection(SQLQuery.java:752) at org.wso2.carbon.dataservices.core.description.query.SQLQuery.processPreNormalQuery(SQLQuery.java:805) ... 53 more Caused by: java.sql.SQLException: Error occurred while initializing the EXCEL datasource at org.wso2.carbon.dataservices.sql.driver.TExcelConnection.createConnectionToExcelDocument(TExcelConnection.java:56) at org.wso2.carbon.dataservices.sql.driver.TExcelConnection.<init>(TExcelConnection.java:36) at org.wso2.carbon.dataservices.sql.driver.TConnectionFactory.createConnection(TConnectionFactory.java:32) at org.wso2.carbon.dataservices.sql.driver.TDriver.connect(TDriver.java:50) at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:278) at org.apache.tomcat.jdbc.pool.PooledConnection.connect(PooledConnection.java:182) at org.apache.tomcat.jdbc.pool.ConnectionPool.createConnection(ConnectionPool.java:701) at org.apache.tomcat.jdbc.pool.ConnectionPool.borrowConnection(ConnectionPool.java:635) at org.apache.tomcat.jdbc.pool.ConnectionPool.getConnection(ConnectionPool.java:188) at org.apache.tomcat.jdbc.pool.DataSourceProxy.getConnection(DataSourceProxy.java:128) at org.wso2.carbon.dataservices.core.description.config.SQLConfig.createConnection(SQLConfig.java:188) at org.wso2.carbon.dataservices.core.description.query.SQLQuery.createConnection(SQLQuery.java:728) ... 54 more Caused by: java.io.IOException: Unable to read entire header; 0 bytes read; expected 512 bytes at org.apache.poi.poifs.storage.HeaderBlock.alertShortRead(HeaderBlock.java:226) at org.apache.poi.poifs.storage.HeaderBlock.readFirst512(HeaderBlock.java:207) at org.apache.poi.poifs.storage.HeaderBlock.<init>(HeaderBlock.java:104) at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:138) at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:322) at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:303) at org.wso2.carbon.dataservices.sql.driver.TExcelConnection.createConnectionToExcelDocument(TExcelConnection.java:51) ... 65 more It happens when I try multiple threads to WRITE into the excel file, not always but often, Thx On Fri, Sep 18, 2015 at 2:08 AM, Rajith Vitharana <[email protected]> wrote: > Hi John, > > I have tried a load test with multiple threads to test this. But I was > able to successfully access the excel file. Used DSS3.2.2 version with > "*.xls" file format. Will you be able to share more details on the error > (carbon log with stack trace you get when trying to access, you can find > the log files in "<SERVER_HOME>/repository/logs" folder) > > Thanks, > > On Fri, Sep 18, 2015 at 5:39 AM, John Q <[email protected]> wrote: > >> Hello, I have a data service that insert data into an excel file, I am >> using the excel datasource. The problem is that when two or more client >> call the service at the same time, onlye one of them success, the other >> fail and the dss throws an exception trying to get the datasource, work >> with the file or something like that, I guess maybe the excel file cannot >> be accessed while it is being accessed by other instance of the service. >> I need to know how can I solve this issue... >> >> thanks and best regards, >> John >> >> _______________________________________________ >> Architecture mailing list >> [email protected] >> https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture >> >> > > > -- > Rajith Vitharana > > Software Engineer, > WSO2 Inc. : wso2.com > Mobile : +94715883223 > Blog : http://lankavitharana.blogspot.com/ >
_______________________________________________ Architecture mailing list [email protected] https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture
