我一直在使用DBeaver，我得到了一台新笔记本电脑。全新安装后，将postgres远程数据库添加到与另一台计算机完全相同的位置。 我可以看到数据库中的所有表和数据。我只是无法备份。
当我右键单击“工具”->“备份”，然后单击“开始”（在旧笔记本电脑上运行相同的过程）时，出现以下错误。如果我使用本地开发数据库执行此操作，则可以正常运行。我可以在尝试使用新笔记本电脑之前和之后直接在笔记本电脑上进行备份。
C:\Program Files\PostgreSQL\10\bin\pg_dump.exe --format=c -n public --verbose --host=compute-1.amazonaws.com --port=5432 --username=elkjlkjkjyb d5kjhkjhjkht5
Backup started at Sun Sep 02 22:10:20 EDT 2018
pg_dump: last built-in OID is 16383
pg_dump: reading extensions
pg_dump: identifying extension members
pg_dump: reading schemas
pg_dump: reading user-defined tables
pg_dump: [archiver (db)] query failed: SSL error: sslv3 alert bad record mac
pg_dump: [archiver (db)] query was: SELECT c.tableoid, c.oid, c.relname, (SELECT pg_catalog.array_agg(acl ORDER BY row_n) FROM (SELECT acl, row_n FROM pg_catalog.unnest(coalesce(c.relacl,pg_catalog.acldefault(CASE WHEN c.relkind = 'S' THEN 's' ELSE 'r' END::"char",c.relowner))) WITH ORDINALITY AS perm(acl,row_n) WHERE NOT EXISTS ( SELECT 1 FROM pg_catalog.unnest(coalesce(pip.initprivs,pg_catalog.acldefault(CASE WHEN c.relkind = 'S' THEN 's' ELSE 'r' END::"char",c.relowner))) AS init(init_acl) WHERE acl = init_acl)) as foo) AS relacl, (SELECT pg_catalog.array_agg(acl ORDER BY row_n) FROM (SELECT acl, row_n FROM pg_catalog.unnest(coalesce(pip.initprivs,pg_catalog.acldefault(CASE WHEN c.relkind = 'S' THEN 's' ELSE 'r' END::"char",c.relowner))) WITH ORDINALITY AS initp(acl,row_n) WHERE NOT EXISTS ( SELECT 1 FROM pg_catalog.unnest(coalesce(c.relacl,pg_catalog.acldefault(CASE WHEN c.relkind = 'S' THEN 's' ELSE 'r' END::"char",c.relowner))) AS permp(orig_acl) WHERE acl = orig_acl)) as foo) as rrelacl, NULL AS initrelacl, NULL as initrrelacl, c.relkind, c.relnamespace, (SELECT rolname FROM pg_catalog.pg_roles WHERE oid = c.relowner) AS rolname, c.relchecks, c.relhastriggers, c.relhasindex, c.relhasrules, c.relhasoids, c.relrowsecurity, c.relforcerowsecurity, c.relfrozenxid, c.relminmxid, tc.oid AS toid, tc.relfrozenxid AS tfrozenxid, tc.relminmxid AS tminmxid, c.relpersistence, c.relispopulated, c.relreplident, c.relpages, CASE WHEN c.reloftype <> 0 THEN c.reloftype::pg_catalog.regtype ELSE NULL END AS reloftype, d.refobjid AS owning_tab, d.refobjsubid AS owning_col, (SELECT spcname FROM pg_tablespace t WHERE t.oid = c.reltablespace) AS reltablespace, array_remove(array_remove(c.reloptions,'check_option=local'),'check_option=cascaded') AS reloptions, CASE WHEN 'check_option=local' = ANY (c.reloptions) THEN 'LOCAL'::text WHEN 'check_option=cascaded' = ANY (c.reloptions) THEN 'CASCADED'::text ELSE NULL END AS checkoption, tc.reloptions AS toast_reloptions, c.relkind = 'S' AND EXISTS (SELECT 1 FROM pg_depend WHERE classid = 'pg_class'::regclass AND objid = c.oid AND objsubid = 0 AND refclassid = 'pg_class'::regclass AND deptype = 'i') AS is_identity_sequence, EXISTS (SELECT 1 FROM pg_attribute at LEFT JOIN pg_init_privs pip ON (c.oid = pip.objoid AND pip.classoid = 'pg_class'::regclass AND pip.objsubid = at.attnum)WHERE at.attrelid = c.oid AND ((SELECT pg_catalog.array_agg(acl ORDER BY row_n) FROM (SELECT acl, row_n FROM pg_catalog.unnest(coalesce(at.attacl,pg_catalog.acldefault('c',c.relowner))) WITH ORDINALITY AS perm(acl,row_n) WHERE NOT EXISTS ( SELECT 1 FROM pg_catalog.unnest(coalesce(pip.initprivs,pg_catalog.acldefault('c',c.relowner))) AS init(init_acl) WHERE acl = init_acl)) as foo) IS NOT NULL OR (SELECT pg_catalog.array_agg(acl ORDER BY row_n) FROM (SELECT acl, row_n FROM pg_catalog.unnest(coalesce(pip.initprivs,pg_catalog.acldefault('c',c.relowner))) WITH ORDINALITY AS initp(acl,row_n) WHERE NOT EXISTS ( SELECT 1 FROM pg_catalog.unnest(coalesce(at.attacl,pg_catalog.acldefault('c',c.relowner))) AS permp(orig_acl) WHERE acl = orig_acl)) as foo) IS NOT NULL OR NULL IS NOT NULL OR NULL IS NOT NULL))AS changed_acl, pg_get_partkeydef(c.oid) AS partkeydef, c.relispartition AS ispartition, pg_get_expr(c.relpartbound, c.oid) AS partbound FROM pg_class c LEFT JOIN pg_depend d ON (c.relkind = 'S' AND d.classid = c.tableoid AND d.objid = c.oid AND d.objsubid = 0 AND d.refclassid = c.tableoid AND d.deptype IN ('a', 'i')) LEFT JOIN pg_class tc ON (c.reltoastrelid = tc.oid) LEFT JOIN pg_init_privs pip ON (c.oid = pip.objoid AND pip.classoid = 'pg_class'::regclass AND pip.objsubid = 0) WHERE c.relkind in ('r', 'S', 'v', 'c', 'm', 'f', 'p') ORDER BY c.oid
Backup finished at Sun Sep 02 22:10:21 EDT 2018
Process exit code: 1
更新
我认为这与大型查询问题而非ssl问题有关。我插入了50行，没有问题。一旦我超过一定数量的字符，它似乎就断开了与服务器的连接。我也相信pg_dump是一个问题，因为它试图做的查询是一个非常大的查询。这是一个本地问题，因为在我的其他笔记本电脑上没有发生。
可能是Postgres 10.5-2或JDBC中的一些最大设置。我的旧笔记本电脑具有与新笔记本电脑相同的JDBC版本。旧笔记本电脑虽然具有Postgres 10.4-1。
答案 0 :(得分：0)
所以结果证明这与 Postgres 没有直接关系。
我有一台 MSI GS65。它有一个称为杀手网络的硬件网络驱动程序。
驱动程序具有您可以修改的设置。其中一项设置是优化网络速度。似乎此设置会丢弃较大的连接。当我通过 dbeaver 进行备份或大型查询时，它会断开连接并停止备份/查询。
我花了 2 年时间才发现这个问题。我希望这对任何使用 MSI 计算机且存在网络问题的开发人员有所帮助。