【已解决】关于Doris 2.1.0 访问Oracle外部目录表时，数据库名称大小写问题

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2.1 catalog

发现一个问题：doris 从2.0.4 版本升级到 2.1.0 版本，发现有一个跟原来不一致的地方，原来版本使用oracle jdbc外部表访问时，oracle外部表的数据库名称需要小写，升到2.1.0后，oracle外部表的数据库名称需要大写。在 doris 2.1.0 运行具体示例如下：


mysql> show create catalog jdbc_oracle_test;
+------------------+--------------------------
| Catalog          | CreateCatalog              
+------------------+--------------------------
| jdbc_oracle_test | 
CREATE CATALOG `jdbc_oracle_test` PROPERTIES (
"user" = "test",
"type" = "jdbc",
"password" = "*XXX",
"lower_case_table_names" = "true",
"jdbc_url" = "jdbc:oracle:thin:@192.168.1.100:1521/orcl",
"driver_url" = "ojdbc6-11.2.0.4.jar",
"driver_class" = "oracle.jdbc.driver.OracleDriver",
"checksum" = "76852c42c44401f44d26319a74e55f5b"
); |
+------------------+---------------------------
1 row in set (0.01 sec)


mysql> select count(1) from jdbc_oracle_test.test.all_test;
ERROR 1049 (42000): errCode = 2, detailMessage = Unknown database 'test'


mysql> select count(1) from jdbc_oracle_test.TEST.all_test;
+----------+
| count(1) |
+----------+
|   848649 |
+----------+
1 row in set (5.07 sec)
lwtsoft3
3 Answers

重新使用"lower_case_meta_names" = "true" 创建 catalog 可以，理论上升级会自动把lower_case_table_names改成lower_case_meta_names，可以在日志里搜一下有没有Modify lower_case_table_names to lower_case_meta_names的记录，以及有没有其他的一些异常

zy-kkk516

按照新的语法形式重新创建一下外部目录就好用了


DROP CATALOG jdbc_oracle_test;

CREATE CATALOG jdbc_oracle_test PROPERTIES (
"user" = "test",
"type" = "jdbc",
"password" = "*XXX",
"lower_case_meta_names" = "true",
"jdbc_url" = "jdbc:oracle:thin:@192.168.1.100:1521/orcl",
"driver_url" = "ojdbc6-11.2.0.4.jar",
"driver_class" = "oracle.jdbc.driver.OracleDriver"
);
lwtsoft3