Hi All, Sorry to bother everyone again.Ofcourse Prof Ripley ,Yihui and Uwe had replied to my email.But this segmentation fault error was not solved.I agree with Prof Ripley,as he said my R and all other configurations,are very old.But what i don't understand is ,i was able to run analysis till few days before,and why suddenly this error.
*The configuartions i use:---* *R-version * *> version* * _* *platform i486-pc-linux-gnu* *arch i486* *os linux-gnu* *system i486, linux-gnu* *status Patched* *major 2* *minor 4.0* *year 2006* *month 11* *day 25* *svn rev 39997* *language R* * * *R-Package Version * *DBI "0.1-11" * *RMySQL "0.5-11" * * * *MySQL version: 5.0.32* *A small R- program* *also doesn't run now*,whereas with these same configurations,i ran correlation analysis,regression analysis for my datasets. Now if i do this :--- *library(RMySQL) myDbconnect<-function(dbName,hostName) { print("myDbconnect print before driver") drv<-MySQL() #print(drv) print("myDbconnect print after driver") #con <- dbConnect(drv, user="xyz", password="xyz",dbname = dbName, host = hostName) con<-dbConnect(drv) print("myDbconnect print after connecting the db") return(con) } main<-function() { print("inside main") dbName<-"AHP2006" hostName<-"mia.foresightint.com" con<-myDbconnect(dbName,hostName) print("hello hello") } main()* Before driver and after driver both the text inside print function are printed.But in the dbconnect some error occurs.*I do not have access to the packages,my seniors have that*.All i do is with the scripts.All i read about segmentation fault is some faulty C-code in the packages.I think the problem is with DBI package.Just wanted to know* other than any error in the packages, can a segmentation fault happen*?Because i was not informed about any changes made in the packages.Where am i going wrong? *Error:---------------* *> source("sample.R") Loading required package: DBI [1] "inside main" [1] "myDbconnect print before driver" [1] "myDbconnect print after driver" *** caught segfault *** address 0x55, cause 'memory not mapped' Traceback: 1: .Call("RS_MySQL_newConnection", drvId, con.params, groups, default.file, PACKAGE = .MySQLPkgName) 2: mysqlNewConnection(drv, ...) 3: .class1(object) 4: .class1(object) 5: is(object, Cl) 6: .valueClassTest(standardGeneric("dbConnect"), "DBIConnection", "dbConnect") 7: dbConnect(drv, user = "xyz", password = "xyz", dbname = dbName, host = hostName) 8: myDbconnect(dbName, hostName) 9: main() 10: eval.with.vis(expr, envir, enclos) 11: eval.with.vis(ei, envir) 12: source("sample.R") Possible actions: 1: abort (with core dump) 2: normal R exit 3: exit R without saving workspace 4: exit R saving workspace Selection: * I tried doing some debugging.But could not find a solution. If i do back tracing :---- > *dbConnect* standardGeneric for "dbConnect" defined from package "DBI" defined with value class: "DBIConnection" function (drv, ...) .valueClassTest(standardGeneric("dbConnect"), "DBIConnection", "dbConnect") <environment: 0x839e7e0> Methods may be defined for arguments: drv > *methods:::.valueClassTest* *function (object, classes, fname)* *{* * if (length(classes) > 0) {* * for (Cl in classes) if (is(object, Cl))* * return(object)* * stop(gettextf("invalid value from generic function \"%s\", class \"%s\", expected %s",* * fname, class(object), paste("\"", classes, "\"",* * sep = "", collapse = " or ")), domain = NA)* * }* * object* *}* *> mysqlNewConnection* *function (drv, dbname = "", username = "", password = "", host = "",* * unix.socket = "", port = 0, client.flag = 0, groups = NULL,* * default.file = character(0))* *{* * if (!isIdCurrent(drv))* * stop("expired manager")* * con.params <- as.character(c(username, password, host, dbname,* * unix.socket, port, client.flag))* * groups <- as.character(groups)* * if (length(default.file) == 1) {* * default.file <- file.path(dirname(default.file), basename(default.file))* * if (!file.exists(default.file))* * stop(sprintf("mysql default file %s does not exist",* * default.file))* * }* * drvId <- as(drv, "integer")* * conId <- .Call("RS_MySQL_newConnection", drvId, con.params,* * groups, default.file, PACKAGE = .MySQLPkgName) // here it gets stopped,traceback line 1* * new("MySQLConnection", Id = conId)* *}* -- Thanks in advance Moumita [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.