Oracle上下文索引：無法通過dblink工作

Question

db1上有兩個db，表test_table，上下文索引按字段a。查詢：

select * 
    from test_table t 
where contains(t.a, 'str') > 0 

它在db1上正常工作。但是，當我嘗試從其他數據庫，通過DBLINK執行相同的查詢：

select * 
    from test_table@db1 t 
where contains(t.a, 'str') > 0 

我得到這個錯誤：

ORA-20000：Oracle Text的錯誤： DRG-10599：列沒有被索引

Answer 1

您必須添加dblink才能運行。 https://docs.oracle.com/cd/E11882_01/text.112/e24436/csql.htm#CCREF0104

The CONTAINS operator also supports database links. You can identify a remote table or materialized view by appending @dblink to the end of its name. The dblink must be a complete or partial name for a database link to the database containing the remote table or materialized view. (Querying of remote views is not supported.)

select * 
    from test_table@db1 t 
where contains(t.a, 'str')@db1 > 0.