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TNS-12518: TNS:listener could not hand off client connection
 TNS-12560: TNS:protocol adapter error
  TNS-00530: Protocol adapter error
   32-bit Windows Error: 2: No such file or directory
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create or replace type ǶÌ×±í»ùÀàÐÍÃû as object(×ֶβÎÊý);
create or replace type mingxitype as object(
goodsid varchar(15),
incount int,
providerid varchar(10)
)not final;
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create or replace type Ç ......

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1. Which statements are true? (Choose all that apply.)
A. The data dictionary is created and maintained by the database administrator.
B. The data dictionary views can consist of joins of dictiona ......

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1.È¡×ӽڵ㼰·¾¶(ÕýÊ÷):
select t.id ,t.code, t.name ,t.pid
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from tas_catalog t
--where id!=110
start with id=110
connect by  pid = prior id
order siblings  by id
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select t.id ,t.code, t.na ......

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OracleTransaction myTrans ;
            conn.Open();
            myTrans =conn.BeginTransaction(IsolationLevel.ReadCommitted) ......
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