Change in maxlocks with no effect, and catch in open

wb/lib/wb/src/wb_db.cpp

@@ -703,12 +703,12 @@ void wb_db_dbody::iter(wb_import &i)
 }
 
 wb_db::wb_db() :
-  m_vid(pwr_cNVid)
+  m_vid(pwr_cNVid), m_txn(0)
 {
 }
 
 wb_db::wb_db(pwr_tVid vid) :
-  m_vid(vid)
+  m_vid(vid), m_txn(0)
 {
 }
 
@@ -913,7 +913,7 @@ void wb_db::openDb(bool useTxn)
 	m_env->set_cachesize(0, 256 * 1024 * 1024, 0);
   rc = m_env->set_lg_bsize(1024*1024*2);
   rc = m_env->set_lg_max(1024*1024*8*2);
-  rc = m_env->set_lk_max_locks(500000);
+  rc = m_env->set_lk_max_locks(50000); // Decreased from 500000
   rc = m_env->set_lk_max_objects(20000);
 
 #if 0
@@ -924,6 +924,7 @@ void wb_db::openDb(bool useTxn)
  }
 #endif
 
+  try {
     if (useTxn) {
       m_env->open(m_fileName,
 		  DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN | DB_RECOVER,
@@ -933,7 +934,9 @@ void wb_db::openDb(bool useTxn)
                 DB_CREATE | DB_INIT_MPOOL | DB_PRIVATE,
 		  S_IRUSR | S_IWUSR);
     }  
-
+  } catch (DbException &e) {
+    printf("m_env->open, %s\n", e.what());
+  }
   printstat(m_env, "after open env");
   
   m_t_ohead = new Db(m_env, 0);