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我目前正在将在 Centos 机器上运行的 Postgres 集群从版本 9.6.22 升级到 12.7。安装 12.7 二进制文件后，我正在运行 pg_upgrade 命令：

/usr/pgsql-12/bin/pg_upgrade -b /usr/pgsql-9.6/bin/ -B /usr/pgsql-12/bin/ -d /<path>/9.6/data.old -D /<path>/12/data/ -j 12 -r -v -k

但是，我在“在新集群中恢复数据库模式”步骤中遇到了多个错误：

pg_restore: creating TABLE "schema1.table1"
pg_restore: creating TABLE "schema1.table2"
pg_restore: creating TABLE "schema1.table3"
pg_restore: while PROCESSING TOC:
pg_restore: from TOC entry 358; 1259 793395 TABLE table3 postgres
pg_restore: error: could not execute query: FATAL:  terminating connection due to administrator command
server closed the connection unexpectedly
    This probably means the server terminated abnormally
    before or while processing the request.
Command was:
-- For binary upgrade, must preserve pg_type oid
SELECT pg_catalog.binary_upgrade_set_next_pg_type_oid('793397'::pg_catalog.oid);


-- For binary upgrade, must preserve pg_type array oid
SELECT pg_catalog.binary_upgrade_set_next_array_pg_type_oid('793396'::pg_catalog.oid);


-- For binary upgrade, must preserve pg_class oids
SELECT pg_catalog.binary_upgrade_set_next_heap_pg_class_oid('793395'::pg_catalog.oid);

CREATE TABLE "schema1"."table3" (
    "date_key" integer NOT NULL,
    "col1" character varying(32),
    "col2" character varying(32),
    "col3" character varying(32) NOT NULL
);

-- For binary upgrade, set heap's relfrozenxid and relminmxid
UPDATE pg_catalog.pg_class
SET relfrozenxid = '1491955518', relminmxid = '1'
WHERE oid = '"schema1"."table3"'::pg_catalog.regclass;

另一个日志文件：

pg_restore: creating TABLE "schema99.table1"
pg_restore: creating SEQUENCE "schema99.sequence1"
pg_restore: creating SEQUENCE OWNED BY "schema99.sequence1"
pg_restore: creating TABLE "schema99.table2"
pg_restore: creating SEQUENCE "schema99.sequence2"
pg_restore: creating SEQUENCE OWNED BY "schema99.sequence2"
pg_restore: creating SEQUENCE "schema99.sequence2"
pg_restore: while PROCESSING TOC:
pg_restore: from TOC entry 347; 1259 1949074 SEQUENCE sequence2 postgres
pg_restore: error: could not execute query: ERROR:  relation "sequence2" already exists
Command was:
-- For binary upgrade, must preserve pg_class oids
SELECT pg_catalog.binary_upgrade_set_next_heap_pg_class_oid('1949074'::pg_catalog.oid);


-- For binary upgrade, must preserve pg_type oid
SELECT pg_catalog.binary_upgrade_set_next_pg_type_oid('1949075'::pg_catalog.oid);

CREATE SEQUENCE "schema99"."sequence2"
    START WITH 1
    INCREMENT BY 1
    NO MINVALUE
    NO MAXVALUE
    CACHE 1;

从日志中恢复命令：

"/usr/pgsql-12/bin/pg_restore" --host /var/lib/pgsql --port 50432 --username postgres --create --exit-on-error --verbose --dbname template1 "pg_upgrade_dump_16405.custom" >> "pg_upgrade_dump_16405.log" 2>&1

同样，在每次运行时，不同的转储文件都会失败 ( pg_upgrade_dump_16405.custom/ pg_upgrade_dump_16404.custom)。有没有人在升级到 Postgres 12.7 时遇到过类似的问题？

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