OCI crash while executing PL/SQL

Question

HI,
I have a multithreaded application which uses OCI. The application has a master thread and spwans 4 child threads that connect to the db and execute specific queries. The problem occurs while trying to execute the last PL/SQL command which includes some bfile operations. I had read that OCI does not mutex properly on LOB operations, but I do not get any error, the application just hangs. Attached is part of the code that has all OCI calls.
The culprit is the update_tables function. The application hangs in there when processing is very close in time for threads.
[] 20080411 10:40:52.255 Oracle NOTICE - [2000][id 1093229] Executing PL/SQL to update all tables
[] 20080411 10:40:52.259 Oracle NOTICE - [2000][id 1093230] Executing PL/SQL to update all tables
[] 20080411 10:40:52.321 Oracle NOTICE - [2000][id 1093231] Executing PL/SQL to update all tables
this is where is hangs.
//!This program is the server portion of the distributed job system.
#include "application.h"
#include "log4cwrapper.h"
//#include "sql.h"
#include <oci.h>
OCIEnv*            env;
int main(int argc, char* argv[]){
     OCIError*     err;
     OCIServer*    srv;
     OCISvcCtx*    svc;
     OCISession*   ses;
     sword r;
     OCIStmt*       initslc;
     OCIStmt*       comm;
     OCIBind      *bnd1hp = (OCIBind*) 0;
     char stmt[]="commit";
     char update_initial[] ="update CONV_IMAGE_JOBS set conv_attempts_cnt = :1";
     FILE *log_fd_main;
     int sockfd, logfd, pidfd, count = 0, oci_error = 0;
     pthread_t job_thread;               //!<Threads for image conversion
    pthread_attr_t thread_attr;          //!<Thread attribute
    int *clientfd;                         //!<Non-negative file descriptor for new socket
    pthread_mutexattr_t mattr;          //!<Mutex attribute used to set the properties of the mutex
     char masterpid[100];
     log_fd_main = fopen(log_file, "a");
     if (log_fd_main == NULL) {
          printf(" ERROR - DjsMaster [0002] Failed to open log file.\n");
        exit(1);
    r=OCIEnvCreate( &env,
          OCI_THREADED
         , 0, 0, 0, 0, 0, 0);
    if (r != OCI_SUCCESS) {
          strcpy(err_msg,"Couldn't create environment (OCIEnvCreate)");
          oci_error = 1;
          cleanup();
     OCIHandleAlloc(env, (dvoid**)&err, OCI_HTYPE_ERROR,   0, 0);
     OCIHandleAlloc(env, (dvoid**)&srv, OCI_HTYPE_SERVER,  0, 0);
     OCIHandleAlloc(env, (dvoid**)&svc, OCI_HTYPE_SVCCTX,  0, 0);
     OCIHandleAlloc(env, (dvoid**)&ses, OCI_HTYPE_SESSION, 0, 0);
     r=OCIServerAttach(srv, err, dbname, strlen((const char*)dbname), (ub4) OCI_DEFAULT);
     if (r != OCI_SUCCESS) {
          checkerrr(err, r, err_msg);
          oci_error = 1;
          cleanup();
     OCIAttrSet(svc, OCI_HTYPE_SVCCTX, srv, 0, OCI_ATTR_SERVER,  err);
     OCIAttrSet(ses, OCI_HTYPE_SESSION, username,
            strlen((const char*)username), OCI_ATTR_USERNAME, err);
     OCIAttrSet(ses, OCI_HTYPE_SESSION, password,
            strlen((const char*)password), OCI_ATTR_PASSWORD, err);
     if ( (r=OCIAttrSet((dvoid *) svc, (ub4) OCI_HTYPE_SVCCTX,
            (dvoid *) ses, (ub4) 0, (ub4) OCI_ATTR_SESSION, err)) ) {
          checkerrr(err, r,err_msg);
          oci_error = 1;
          cleanup();
     r=OCISessionBegin (svc, err, ses, OCI_CRED_RDBMS, OCI_DEFAULT);
     if (r != OCI_SUCCESS) {
          checkerrr(err, r,err_msg);
          oci_error = 1;
          cleanup();
     if (OCIHandleAlloc((dvoid *) env, (dvoid **) &initslc,
            (ub4) OCI_HTYPE_STMT, (size_t) 0, (dvoid **) 0)) {
          checkerrr(err, r, (text*)err_msg);
          oci_error = 1;
          cleanup();
     if ((r=OCIStmtPrepare(initslc, err, (text*)(void*)update_initial,
            (ub4) strlen((char *) update_initial),
            (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT))) {
          checkerrr(err, r, (text*)err_msg);
          OCIHandleFree((dvoid *) initslc, (ub4) OCI_HTYPE_STMT);
          oci_error = 1;
          cleanup();
     int coun=0;
     if ((r = OCIBindByPos(initslc, &bnd1hp, err, (ub4) 1, &coun, sizeof(count), SQLT_INT,
                             (dvoid *) 0, (ub2 *) 0, (ub2 *) 0, (ub4) 0, (ub4 *) 0, OCI_DEFAULT))){
           checkerrr(err, r, (text*)err_msg);
        oci_error = 1;
          cleanup();
     if ((r = OCIStmtExecute(svc, initslc, err, (ub4) 1, (ub4) 0, (CONST OCISnapshot *) 0,
                               (OCISnapshot *) 0, (ub4) OCI_DEFAULT))){
          checkerrr(err, r, (text*)err_msg);
         OCIHandleFree((dvoid *) sh, (ub4) OCI_HTYPE_STMT);
         oci_error = 1;
           cleanup();
     if ((r=OCIHandleAlloc((dvoid *) env, (dvoid **) &comm,
            (ub4) OCI_HTYPE_STMT, (size_t) 0, (dvoid **) 0))) {
          checkerrr(err, r, (text*)err_msg);
          oci_error = 1;
          cleanup();
     if ((r=OCIStmtPrepare(comm, err, (text*)(void*)stmt,
            (ub4) strlen((char *) stmt), (ub4) OCI_NTV_SYNTAX,
            (ub4) OCI_DEFAULT))) {
          checkerrr(err, r, (text*)err_msg);
          OCIHandleFree((dvoid *) comm, (ub4) OCI_HTYPE_STMT);
          oci_error = 1;
          cleanup();
     if ((r=OCIStmtExecute(svc, comm, err, (ub4) 1, (ub4) 0,
            (CONST OCISnapshot *) 0, (OCISnapshot *) 0,
            (ub4) OCI_DEFAULT))) {
          checkerrr(err, r, (text*)err_msg);
          OCIHandleFree((dvoid *) comm, (ub4) OCI_HTYPE_STMT);
          oci_error = 1;
          cleanup();
     OCIHandleFree((dvoid *) comm, (ub4) OCI_HTYPE_STMT);
     OCIHandleFree((dvoid *) initslc, (ub4) OCI_HTYPE_STMT);
     if ((r = OCISessionEnd(svc, err, ses, OCI_DEFAULT))) {
          checkerrr(err, r, (text*)err_msg);
          oci_error = 1;
          cleanup();
    if ((r = OCIServerDetach(srv, err, OCI_DEFAULT))) {
          checkerrr(err, r, (text*)err_msg);
          oci_error = 1;
          cleanup();
     if ((r = OCIHandleFree((dvoid*) ses, (ub4) OCI_HTYPE_SESSION))) {
          checkerrr(err, r, (text*)err_msg);
          oci_error = 1;
          cleanup();
    if ((r = OCIHandleFree((dvoid*) svc, (ub4) OCI_HTYPE_SVCCTX))) {
          checkerrr(err, r, (text*)err_msg);
          oci_error = 1;
          cleanup();
    if ((r = OCIHandleFree((dvoid*) srv, (ub4) OCI_HTYPE_SERVER))) {
          checkerrr(err, r, (text*)err_msg);
          oci_error = 1;
          cleanup();
    if ((r = OCIHandleFree((dvoid*) err, (ub4) OCI_HTYPE_ERROR))) {
          oci_error = 1;
          cleanup();
     if ( oci_error == 1) {
          cleanup();
        log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
     log4c_appender_set_udata(myappender, log_fd_main);
     mylog_msg("DjsMaster", LOG4C_PRIORITY_DEBUG,
      " [0000]  daemon running, ready to accept connections,"
      "waiting for to connect......");     
     fclose(log_fd_main);
     while (1) {
             Accept a connection from a slave. 
        clientfd = malloc(sizeof(int));
        if ((*clientfd = serv_accept(sockfd)) < 0) {
                exit(1);
             Fork off a child thread to process this slave. 
        pthread_create(&job_thread, &thread_attr, jobfunction, clientfd);
         //count++;
           sleep(1);
//!Dump Oracle Error
void cleanup() {
     log4c_appender_t* myappender;
     myappender = log4c_appender_get("myappender");
     log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
     log4c_appender_set_udata(myappender, fopen(log_file, "a"));
     mylog_log("DjsMaster", LOG4C_PRIORITY_ERROR,
      " [2001] Oracle error %s", err_msg);
void *jobfunction(void *arg) {
     OCIError*     err;
     OCIServer*    srv;
     OCISvcCtx*    svc;
     OCISession*   ses;
     sword r;
     OCIBind      *bnd1hp = (OCIBind*) 0;
     OCIBind      *bnd2hp = (OCIBind*) 0;
     OCIBind      *bnd3hp = (OCIBind*) 0;
     OCIDefine *def1hp = (OCIDefine *) 0;
     OCIDefine *def2hp = (OCIDefine *) 0;
     OCIDefine *def3hp = (OCIDefine *) 0;
     OCIDefine *def4hp = (OCIDefine *) 0;
     OCIDefine *def5hp = (OCIDefine *) 0;
     OCIDefine *def6hp = (OCIDefine *) 0;
     OCIDefine *def7hp = (OCIDefine *) 0;
     OCIDefine *def8hp = (OCIDefine *) 0;
     OCIDefine *def9hp = (OCIDefine *) 0;
     char select_all[] =" select filename, filepath, image_system_id, quality_status_cd,"
                      " format_cd,global_id, id, conv_attempts_cnt, image_resolution"
                              " from TABLE_NAME where conv_attempts_cnt = 0 order by created_datetime ";
     char select_count[] ="select conv_attempts_cnt, image_resolution from TABLE_NAME"
                        " where id = :1 ";
     char update_single[] ="update TABLENAME set conv_attempts_cnt = :1 where id = :2 ";
     char stmt[]="commit";
     int oci_error = 0;
        Variables to hold the values returned from SQL SELECT
     int id, global_id, format_cd, quality_status;
     int resolution, image_id, conv_attempts_cnt;
     char filename[101];                      
   char filepath[201];                      
     char filepath_full[MAX_BUF];       
     char tif_filename[101];                 
     char return_filepath[MAX_BUF];     
     char conv_details[MAX_BUF];          
     char *hold_filename;
     char *hold_filepath;
     char *hold_tiffile;
   char *progress;
     char *tempstr_p;
   char *jobnum_p;
   char *returnname_p;
     char *returnsize_p;
     char tempstr[MAX_BUF];
     int count = 0;                 
     int success_flag = 0;     
   int reprocess_flag = 0;
     char s_resolution[5];     
     char s_format[5];            
     struct stat filebuf;      
     int myfd, datafd, jobid, i, update, holdid;
     char sockread[1024], sockwrite[1024],
        jobnum[10], dataname[1024],
        line_to_log[1024], databuf[1024];
     int datasize, bufsize, returnsize, filesize;
     FILE *log_fd;
     log4c_appender_t* myappender;
     myappender = log4c_appender_get("myappender");
     log_fd = fopen(log_file, "a");
     if (log_fd == NULL) {
          perror(" ERROR - DjsMaster [1000] Failed to open log file.\n");
        exit(1);
     myfd = *((int *)arg);          
   log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
     log4c_appender_set_udata(myappender, log_fd);
     mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
            " [1000] Starting jobs on %d.",
            (int)pthread_self());     
     Readline_r(myfd, sockread, 255);
        Continue to read requests received from the slaves. 
     while (strcmp(sockread, SLAVE_DONE) != 0) {
          OCIStmt* slcth;               
          OCIStmt* updth;               
          OCIStmt* slcth2;           
          OCIStmt*       comm;
          sleep(15);
      log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
          log4c_appender_set_udata(myappender, log_fd);
          mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
         " [1000] Continue to read request from %d, looping with %s ",
         (int)pthread_self(), sockread);     
        if (strcmp(sockread, REQUEST_JOB) == 0) {
               log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
               log4c_appender_set_udata(myappender, log_fd);
               mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
            " [1000] %d  requesting job. Connecting to database.",
            (int)pthread_self());     
           if (oci_error == 1) {
            if ((r = OCIServerDetach(srv, err, OCI_DEFAULT))) {
                    checkerrr(err, r, (text*)err_msg);
                    cleanup();
                  if ((r = OCIHandleFree((dvoid*) ses, (ub4) OCI_HTYPE_SESSION))) {
                       checkerrr(err, r, (text*)err_msg);
                       cleanup();
                  if ((r = OCIHandleFree((dvoid*) svc, (ub4) OCI_HTYPE_SVCCTX))) {
                       checkerrr(err, r, (text*)err_msg);
                       cleanup();
                  if ((r = OCIHandleFree((dvoid*) srv, (ub4) OCI_HTYPE_SERVER))) {
                       checkerrr(err, r, (text*)err_msg);
                       cleanup();
                  if ((r = OCIHandleFree((dvoid*) err, (ub4) OCI_HTYPE_ERROR))) {
                       cleanup();
            oci_error = 0;
               OCIHandleAlloc(env, (dvoid**)&err, OCI_HTYPE_ERROR,   0, 0);
               OCIHandleAlloc(env, (dvoid**)&srv, OCI_HTYPE_SERVER,  0, 0);
               OCIHandleAlloc(env, (dvoid**)&svc, OCI_HTYPE_SVCCTX,  0, 0);
               OCIHandleAlloc(env, (dvoid**)&ses, OCI_HTYPE_SESSION, 0, 0);
               r=OCIServerAttach(srv, err, dbname,
               strlen((const char*)dbname), (ub4) OCI_DEFAULT);
               if (r != OCI_SUCCESS) {
                    checkerrr(err, r, err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               OCIAttrSet(svc, OCI_HTYPE_SVCCTX, srv, 0, OCI_ATTR_SERVER,  err);
         OCIAttrSet(ses, OCI_HTYPE_SESSION, username,
               strlen((const char*)username), OCI_ATTR_USERNAME, err);
         OCIAttrSet(ses, OCI_HTYPE_SESSION, password,
               strlen((const char*)password), OCI_ATTR_PASSWORD, err);
               if ( (r=OCIAttrSet((dvoid *) svc, (ub4) OCI_HTYPE_SVCCTX,
               (dvoid *) ses, (ub4) 0, (ub4) OCI_ATTR_SESSION, err)) ) {
                    checkerrr(err, r,err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               r=OCISessionBegin (svc, err, ses, OCI_CRED_RDBMS, OCI_DEFAULT);
               if (r != OCI_SUCCESS) {
                    checkerrr(err, r,err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if (OCIHandleAlloc((dvoid *) env, (dvoid **) &slcth,
               (ub4) OCI_HTYPE_STMT, (size_t) 0, (dvoid **) 0)) {
                    checkerrr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIStmtPrepare(slcth, err, (text*)(void*)select_all,
                  (ub4) strlen((char *) select_all),
                  (ub4) OCI_NTV_SYNTAX,
                  (ub4) OCI_DEFAULT))) {
                    checkerrr(err, r, (text*)err_msg);
                    OCIHandleFree((dvoid *) slcth, (ub4) OCI_HTYPE_STMT);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def1hp, err, 1,
                  filename, 100, SQLT_CHR, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def2hp, err, 2,
                  filepath, 100, SQLT_CHR, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def3hp, err, 3,
                  &image_id, sizeof(int), SQLT_INT, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def4hp, err, 4,
                  &quality_status, sizeof(int), SQLT_INT,
                  (dvoid *) 0, (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def5hp, err, 5,
                  &format_cd, sizeof(int), SQLT_INT, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def6hp, err, 6,
                  &global_id, sizeof(int), SQLT_INT, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def7hp, err, 7,
                  &id, sizeof(int), SQLT_INT, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIDefineByPos(slcth, &def8hp, err, 8,
                  &conv_attempts_cnt, sizeof(int), SQLT_INT, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
               if ((r=OCIDefineByPos(slcth, &def9hp, err, 9,
                  &resolution, sizeof(int), SQLT_INT, (dvoid *) 0,
                  (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                    checkerr(err, r, (text*)err_msg);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               if ((r=OCIStmtExecute(svc, slcth, err, (ub4) 0, (ub4) 0,
                  (CONST OCISnapshot *) 0, (OCISnapshot *) 0,
                  (ub4) OCI_DEFAULT))){
                    checkerr(err, r, (text*)err_msg);
                    OCIHandleFree((dvoid *) slcth, (ub4) OCI_HTYPE_STMT);
                    oci_error = 1;
                    cleanup();
                    sprintf(sockwrite, "%s", NO_JOB);
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    Readline_r(myfd, sockread, 255);
                    continue;
               r = OCIStmtFetch(slcth, err, (ub4) 1, (ub4) OCI_FETCH_NEXT, (ub4) OCI_DEFAULT);
               if (r == OCI_SUCCESS) {
                    success_flag = 1;
            reprocess_flag = 0;
               else if (r == OCI_SUCCESS_WITH_INFO) {
                    success_flag = 1;
            reprocess_flag = 0;
               else {
                    if (r != OCI_NO_DATA) {
                         checkerr(err, r, (text*)err_msg);
                         success_flag = 0;
                    success_flag = 0;
               OCIHandleFree((dvoid *) slcth, (ub4) OCI_HTYPE_STMT);
                   No job in the table. Continue listening. Tell the slave
                   there are no current jobs to process. 
             if (! (success_flag)) {
            if ((r = OCISessionEnd(svc, err, ses, OCI_DEFAULT))) {
                       checkerrr(err, r, (text*)err_msg);
                       oci_error = 1;
                       cleanup();
                       sprintf(sockwrite, "%s", NO_JOB);
                       Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                       Readline_r(myfd, sockread, 255);
                       continue;
            if ((r = OCIServerDetach(srv, err, OCI_DEFAULT))) {
                       checkerrr(err, r, (text*)err_msg);
                       oci_error = 1;
                       cleanup();
                       sprintf(sockwrite, "%s", NO_JOB);
                       Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                       Readline_r(myfd, sockread, 255);
                       continue;
                  if ((r = OCIHandleFree((dvoid*) ses, (ub4) OCI_HTYPE_SESSION))) {
                       checkerrr(err, r, (text*)err_msg);
                       oci_error = 1;
                       cleanup();
                       sprintf(sockwrite, "%s", NO_JOB);
                       Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                       Readline_r(myfd, sockread, 255);
                       continue;
                  if ((r = OCIHandleFree((dvoid*) svc, (ub4) OCI_HTYPE_SVCCTX))) {
                       checkerrr(err, r, (text*)err_msg);
                       oci_error = 1;
                       cleanup();
                       sprintf(sockwrite, "%s", NO_JOB);
                       Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                       Readline_r(myfd, sockread, 255);
                       continue;
                  if ((r = OCIHandleFree((dvoid*) srv, (ub4) OCI_HTYPE_SERVER))) {
                       checkerrr(err, r, (text*)err_msg);
                       oci_error = 1;
                       cleanup();
                       sprintf(sockwrite, "%s", NO_JOB);
                       Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                       Readline_r(myfd, sockread, 255);
                       continue;
                  if ((r = OCIHandleFree((dvoid*) err, (ub4) OCI_HTYPE_ERROR))) {
                       oci_error = 1;
                       cleanup();
                       sprintf(sockwrite, "%s", NO_JOB);
                       Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                       Readline_r(myfd, sockread, 255);
                       continue;
                    success_flag = 0;
                    sprintf(sockwrite, "%s", NO_JOB);
                log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                    log4c_appender_set_udata(myappender, log_fd);
                    mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
                  " [1000] No new jobs, writing to %d %s",
                  (int)pthread_self(), sockwrite);     
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
            Readline_r(myfd, sockread, 255);
                    success_flag = 0;
            continue;
               /*  New job is fetched, process it.  */
                 else {
            reprocess_flag = 0;
reprocess:     log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                    log4c_appender_set_udata(myappender, log_fd);
                    mylog_log("Oracle", LOG4C_PRIORITY_DEBUG,
               " [2000][id %d] Fetching data for new job from databse", id);
                    mylog_log("Oracle", LOG4C_PRIORITY_DEBUG,
               " [2000][id %d]Fetched job_id=%d, format=%d, resolution=%d, conv_attemtps=%d, imagefile=%s, imagepath=%s",
               id, id, format_cd, resolution,
               conv_attempts_cnt, filename, filepath);
                    log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                    log4c_appender_set_udata(myappender, log_fd);
                    mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
               " [1000][id %d] New job for %d. Job will be processed.",
               id, (int)pthread_self());     
                    holdid = id;
            if ( reprocess_flag == 1 )
                       OCIHandleAlloc(env, (dvoid**)&err, OCI_HTYPE_ERROR,   0, 0);
                       OCIHandleAlloc(env, (dvoid**)&srv, OCI_HTYPE_SERVER,  0, 0);
                       OCIHandleAlloc(env, (dvoid**)&svc, OCI_HTYPE_SVCCTX,  0, 0);
                       OCIHandleAlloc(env, (dvoid**)&ses, OCI_HTYPE_SESSION, 0, 0);
                       r=OCIServerAttach(srv, err, dbname, strlen((const char*)dbname), (ub4) OCI_DEFAULT);
                       if (r != OCI_SUCCESS) {
                            checkerrr(err, r, err_msg);
                            oci_error = 1;
                            cleanup();
                            success_flag = 0;
                            sprintf(sockwrite, "%s", NO_JOB);
                            Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                            Readline_r(myfd, sockread, 255);
                            continue;
                       OCIAttrSet(svc, OCI_HTYPE_SVCCTX, srv, 0, OCI_ATTR_SERVER,  err);
                       OCIAttrSet(ses, OCI_HTYPE_SESSION, username, strlen((const char*)username), OCI_ATTR_USERNAME, err);
                       OCIAttrSet(ses, OCI_HTYPE_SESSION, password, strlen((const char*)password), OCI_ATTR_PASSWORD, err);
                       if ( (r=OCIAttrSet((dvoid *) svc, (ub4) OCI_HTYPE_SVCCTX, (dvoid *) ses, (ub4) 0, (ub4) OCI_ATTR_SESSION, err)) ) {
                            checkerrr(err, r,err_msg);
                            oci_error = 1;
                            cleanup();
                            success_flag = 0;
                            sprintf(sockwrite, "%s", NO_JOB);
                            Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                            Readline_r(myfd, sockread, 255);
                            continue;
                       r=OCISessionBegin (svc, err, ses, OCI_CRED_RDBMS, OCI_DEFAULT);
                       if (r != OCI_SUCCESS) {
                            checkerrr(err, r,err_msg);
                            oci_error = 1;
                            cleanup();
                            success_flag = 0;
                            sprintf(sockwrite, "%s", NO_JOB);
                            Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                            Readline_r(myfd, sockread, 255);
                            continue;
                    if (OCIHandleAlloc((dvoid *) env, (dvoid **) &slcth2,
                  (ub4) OCI_HTYPE_STMT, (size_t) 0, (dvoid **) 0)) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r=OCIStmtPrepare(slcth2, err, (text*)(void*)select_count,
                  (ub4) strlen((char *) select_count),
                  (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT))) {
                         checkerrr(err, r, (text*)err_msg);
                         OCIHandleFree((dvoid *) slcth2, (ub4) OCI_HTYPE_STMT);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r=OCIDefineByPos(slcth2, &def1hp, err, 1,
                     &conv_attempts_cnt, sizeof(int), SQLT_INT, (dvoid *) 0,
                     (ub2   *) 0, (ub2   *) 0, OCI_DEFAULT))) {
                         checkerr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIBindByPos(slcth2, &bnd1hp, err, (ub4) 1,
                     &holdid, sizeof(int), SQLT_INT,
                     (dvoid *) 0, (ub2 *) 0, (ub2 *) 0, (ub4) 0,
                     (ub4 *) 0, OCI_DEFAULT))){
                         checkerr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIStmtExecute(svc, slcth2, err, (ub4) 0, (ub4) 0,
                     (CONST OCISnapshot *) 0,
                     (OCISnapshot *) 0, (ub4) OCI_DEFAULT))){
                         checkerr(err, r, (text*)err_msg);
                         OCIHandleFree((dvoid *) slcth2, (ub4) OCI_HTYPE_STMT);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    r = OCIStmtFetch(slcth2, err, (ub4) 1,
                  (ub4) OCI_FETCH_NEXT, (ub4) OCI_DEFAULT);
                    if (r == OCI_SUCCESS) {
                         success_flag = 1;
                    else if (r == OCI_SUCCESS_WITH_INFO) {
                         success_flag = 1;
                    else {
                         if (r != OCI_NO_DATA) {
                              checkerr(err, r, (text*)err_msg);
                              success_flag = 0;
                              sprintf(sockwrite, "%s", NO_JOB);
                              Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                              Readline_r(myfd, sockread, 255);
                              continue;
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    OCIHandleFree((dvoid *) slcth2, (ub4) OCI_HTYPE_STMT);
                    count = conv_attempts_cnt;
                    count++;
                    /*   Updating conv_attemtpts_cnt for the current job  */
                    if (OCIHandleAlloc((dvoid *) env, (dvoid **) &updth,
                  (ub4) OCI_HTYPE_STMT, (size_t) 0, (dvoid **) 0)) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r=OCIStmtPrepare(updth, err, (text*)(void*)update_single,
                  (ub4) strlen((char *) update_single), (ub4) OCI_NTV_SYNTAX,
                  (ub4) OCI_DEFAULT))) {
                         checkerrr(err, r, (text*)err_msg);
                         OCIHandleFree((dvoid *) updth, (ub4) OCI_HTYPE_STMT);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIBindByPos(updth, &bnd2hp, err, (ub4) 1, &count,
                     sizeof(count), SQLT_INT, (dvoid *) 0, (ub2 *) 0,
                     (ub2 *) 0, (ub4) 0, (ub4 *) 0, OCI_DEFAULT))){
                     checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIBindByPos(updth, &bnd3hp, err, (ub4) 2, &holdid,
                     sizeof(holdid), SQLT_INT, (dvoid *) 0, (ub2 *) 0,
                     (ub2 *) 0, (ub4) 0, (ub4 *) 0, OCI_DEFAULT))){
                     checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIStmtExecute(svc, updth, err, (ub4) 1, (ub4) 0,
                     (CONST OCISnapshot *) 0, (OCISnapshot *) 0,
                     (ub4) OCI_DEFAULT))){
                         checkerrr(err, r, (text*)err_msg);
                         OCIHandleFree((dvoid *) updth, (ub4) OCI_HTYPE_STMT);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r=OCIHandleAlloc((dvoid *) env, (dvoid **) &comm,
                     (ub4) OCI_HTYPE_STMT, (size_t) 0, (dvoid **) 0))) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r=OCIStmtPrepare(comm, err, (text*)(void*)stmt,
                     (ub4) strlen((char *) stmt),
                     (ub4) OCI_NTV_SYNTAX, (ub4) OCI_DEFAULT))) {
                         checkerrr(err, r, (text*)err_msg);
                         OCIHandleFree((dvoid *) comm, (ub4) OCI_HTYPE_STMT);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r=OCIStmtExecute(svc, comm, err, (ub4) 1,
                  (ub4) 0, (CONST OCISnapshot *) 0, (OCISnapshot *) 0,
                  (ub4) OCI_DEFAULT))) {
                         checkerrr(err, r, (text*)err_msg);
                         OCIHandleFree((dvoid *) comm, (ub4) OCI_HTYPE_STMT);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    OCIHandleFree((dvoid *) comm, (ub4) OCI_HTYPE_STMT);
                    OCIHandleFree((dvoid *) updth, (ub4) OCI_HTYPE_STMT);
                    if ((r = OCISessionEnd(svc, err, ses, OCI_DEFAULT))) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIServerDetach(srv, err, OCI_DEFAULT))) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIHandleFree((dvoid*) ses, (ub4) OCI_HTYPE_SESSION))) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIHandleFree((dvoid*) svc, (ub4) OCI_HTYPE_SVCCTX))) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIHandleFree((dvoid*) srv, (ub4) OCI_HTYPE_SERVER))) {
                         checkerrr(err, r, (text*)err_msg);
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    if ((r = OCIHandleFree((dvoid*) err, (ub4) OCI_HTYPE_ERROR))) {
                         oci_error = 1;
                         cleanup();
                         success_flag = 0;
                         sprintf(sockwrite, "%s", NO_JOB);
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         continue;
                    hold_filename = strtok_r(filename, " ", &progress);
                    strcpy(filename,hold_filename);
                    strcpy(tif_filename, filename);
                hold_tiffile = strtok_r(tif_filename, ".", &progress);
                    strcpy(tif_filename, hold_tiffile);
                    strcat(tif_filename, ".tif");
                    hold_filepath = strtok_r(filepath, " ", &progress);
                    strcpy(filepath, hold_filepath);
                    strcpy(return_filepath, filepath);
                    strcat(return_filepath, "/");
                    strcat(return_filepath, filename);
                    log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                    log4c_appender_set_udata(myappender, log_fd);
                    mylog_log("DjsMaster", LOG4C_PRIORITY_DEBUG,
               " [1000][id %d]  Image %s located in %s will be converted to image filename %s ",
               holdid, tif_filename, filepath, filename);     
                    if (tif_filename == NULL) {
                         log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                         log4c_appender_set_udata(myappender, log_fd);
                         mylog_log("DjsMaster", LOG4C_PRIORITY_WARN,
                  " [1001][id %d]  No file to convert. No file name associated with the job",
                  holdid);     
               sprintf(sockwrite, "%s", NO_JOB);
               log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                         log4c_appender_set_udata(myappender, log_fd);
                         mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
                  " [1000][id %d] No job to perform. Writing to %d %s",
                  holdid, (int)pthread_self(), sockwrite);     
                         Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                         Readline_r(myfd, sockread, 255);
                         if ( count <= max_failure ) {
                              success_flag = 1;
                  reprocess_flag = 1;
                              goto reprocess;
                         else {
                              success_flag = 0;
                              continue;
                         //continue;
                    strcpy(filepath_full, filepath);
                    strcat(filepath_full, "/");
                    strcat(filepath_full, tif_filename);
                    if (stat(filepath_full, &filebuf) < 0) {
               log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                       log4c_appender_set_udata(myappender, log_fd);
                         mylog_log("DjsMaster", LOG4C_PRIORITY_WARN,
                  " [1002][id %d]  Could not stat the file %s. Nothing to send to %d ",
                  holdid, filepath_full, (int)pthread_self());     
                       sprintf (sockwrite, "%s", NO_JOB);
               log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                         log4c_appender_set_udata(myappender, log_fd);
                         mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
                  " [1000][id %d] No job to perform. Writing to %d %s",
                  holdid, (int)pthread_self(), sockwrite);     
                       Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
               Readline_r(myfd, sockread, 255);
                         if ( count <= max_failure ) {
                              success_flag = 1;
                  reprocess_flag = 1;
                              goto reprocess;
                         else {
                              success_flag = 0;
                              continue;
                    //continue;
                    datasize = (int)filebuf.st_size;
                    sprintf(s_resolution, "%d", resolution);
                    sprintf(s_format, "%d", format_cd);
                    strcpy(conv_details, "./conv.sh:");
                    strcat(conv_details, tif_filename);
                    strcat(conv_details, ":");
                    strcat(conv_details, s_resolution);
                    strcat(conv_details, ":");
                    strcat(conv_details, s_format);
                    log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                    log4c_appender_set_udata(myappender, log_fd);
                    mylog_log("DjsMaster", LOG4C_PRIORITY_NOTICE,
               " [1000][id %d] Writing to socket all conversion details for %d ",
               holdid, (int)pthread_self());     
                    sprintf(sockwrite, "%d=%s%%%s%%%d%%%s\n", id, conv_details,
                  tif_filename, datasize, return_filepath);
                    log4c_appender_set_type(myappender, log4c_appender_type_get("stream"));
                    log4c_appender_set_udata(myappender, log_fd);
                    mylog_log("DjsMaster", LOG4C_PRIORITY_DEBUG, " [1000][id %d] Sending %s",
                  holdid, sockwrite);     
                    Writen_r(myfd, sockwrite, (int)strlen(sockwrite));
                    if ((datafd = open(filepath_full, O_RDONLY)) < 0) {
               close(myfd);
                 log4c_appender_set_type(myappender,

Answer 1

I wonder how OCI_OBJECT will fix it as the call to OCIServerAttach is the culprit in the update_Tables function.