在ubuntu上使用node-oracle时的分段

Question

我通过以下代码使用node-oracle模块(来自node-oracle文档)：

var oracle = require("oracle");

oracle.connect({ "hostname": "192.168.1.120/orcl", "user": "USER", "password": "PASS" }, function(err, connection) {
  if(err){ console.log("Connect err:" + err); }
  if(connection){ console.log("Connection:" + connection); }

  // selecting rows
connection.execute("SELECT nickname FROM users WHERE nickname = :1", ['luc'], function(err, results) {
  console.log("execution");
  console.log("RESULTS:" + results);
  console.log("Err:" + err);
});

connection.setAutoCommit(true);

connection.commit(function(err) {
  console.log("commiting");
  // transaction committed
});

connection.rollback(function(err) {
  console.log("rollback");
  // transaction rolledback
});

connection.close(); // call this when you are done with the connection
});

这会给我不同的错误消息：

$ node test_node_oracle.js 
Connection:[object Connection]
rollback
commiting
execution
RESULTS:undefined
Err:Error: ORA-24324: service handle not initialized

有时，它还提供了：

$ node test_node_oracle.js 
Connection:[object Connection]
Segmentation fault

或者也可以：

$ node test_node_oracle.js 
Connection:[object Connection]
commiting
rollback
execution
RESULTS:undefined
Err:Error: ORA-32102: invalid OCI handle

不过，sqlplus access运行良好：

$ sqlplus USER/PASS@192.168.1.120/orcl

SQL*Plus: Release 11.2.0.3.0 Production on Mon Mar 12 15:18:18 2012

版权所有(c) 1982,2011，Oracle。版权所有。

连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production With the Partitioning，OLAP，Data Mining and Real Application Testing options

SQL>

Answer 1

connection.close(); // call this when you are done with the connection

我认为这个get调用得太快了，因为所有的语句都是non-blocking in node.js(event-loop)。您可能应该将其封装在commit和rollback中的适当回调中。您还应该将所有代码包装在connection回调中

oracle.connect({ "hostname": "192.168.1.120/orcl", "user": "USER", "password": "PASS" }, function(err, connection) {
// wrap all your code inside of this.
}