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目标CN的pg_hba.conf里配置了当前客户端IP使用“gss”方式来做认证，该认证算法不支持用作客户端的身份认证，请修改到“sha256”后再试。
1 cd <客户端存放路径> unzip dws_client_8.1.x_redhat_x64.zip 其中： <客户端存放路径>：请替换为实际的客户端存放路径。
+-------------------- dbadmin | gaussdb | 2017-06-02 15:28:34+08 | login_success | ok | gsql@[local] (1 row) 查看上一次登录认证失败的日期、时间和IP
1,5) <> substr(s_zip,1,5) AND ss_store_sk = s_store_sk GROUP BY i_brand ,i_brand_id ,i_manufact_id ,i_manufact ORDER
client_addr inet 连接到后端的客户端的IP地址。 如果此字段是null，它表明通过服务器机器上UNIX套接字连接客户端或者这是内部进程，如autovacuum。
GAUSS-04125: "multiple backends attempting to wait for pincount 1" SQLSTATE: XX010 错误原因：系统内部错误。 解决办法：请联系技术支持工程师提供技术支持。
GAUSS-02439: "WaitForMultipleObjects() failed: error code %lu" SQLSTATE: XX000 错误原因：系统内部错误。 解决办法：请联系技术支持工程师提供技术支持。
GAUSS-00694: "check constraint name '%s' appears multiple times but with different expressions" SQLSTATE: 42710 错误原因：不同表达式的check约束名出现多次。
3 4 5 6 7 8 \d+ dba_users View "PG_CATALOG.DBA_USERS" Column | Type | Modifiers | Storage | Description
3 4 5 6 7 8 \d+ dba_users View "PG_CATALOG.DBA_USERS" Column | Type | Modifiers | Storage | Description
It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure
It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure
It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure
It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure
It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure
GAUSS-00453: "data directory '%s' has wrong ownership" SQLSTATE: 55000 错误原因：系统内部错误。 解决办法：请联系技术支持工程师提供技术支持。
解决办法：尝试更改语句，不同时查询内外表，或禁止fast_query_shipping。 GAUSS-01644: "Not support feature of HDFS" SQLSTATE: 0A000 错误原因：HDFS不支持此特性。 解决办法：不建议使用此特性。
GAUSS-01677: "Only support FOR UPDATE/SHARE in fast query shipping plan for now" SQLSTATE: 0A000 错误原因：系统内部错误。 解决办法：请联系技术支持工程师提供技术支持。
GAUSS-03837: "there are multiple rules named '%s'" SQLSTATE: 42710 错误原因：试图获取对应表的某个rule，但是出现多个同名的rule。 解决办法：检查表的rule。
= ca_zip and s_market_id=7 group by c_last_name ,c_first_name ,s_store_name ,ca_state ,s_state ,i_color ,i_current_price ,i_manager_id ,i_units
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