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我有一个查询：

SELECT ps_node_id,name 
FROM cz_ps_nodes WHERE cz_ps_nodes.ps_node_type=261
START WITH NAME = 'Bundle Rule Repository',cz_ps_nodes.devl_project_id = P_devl_project_id AND cz_ps_nodes.deleted_flag = 0
CONNECT BY PRIOR ps_node_id = parent_id.

此查询有效。但是，如果我只是从选择部分中删除名称，例如：

SELECT ps_node_id
FROM cz_ps_nodes WHERE cz_ps_nodes.ps_node_type = 261                       
START WITH NAME = 'Bundle Rule Repository',cz_ps_nodes.devl_project_id = P_devl_project_id AND cz_ps_nodes.deleted_flag = 0                                         
CONNECT BY PRIOR ps_node_id = parent_id.

查询只是挂起，但正在使用 oracle 10g，当我们升级到 oracle 11g 时问题就开始了。谁能解释为什么？

4

1 回答 1

0

通过使用解决了问题：alter session set optimizer_features_enable='10.2.0.4' –

于 2013-07-30T10:33:00.093 回答