在升级AnalyticDB PostgreSQL 6.0版为AnalyticDB PostgreSQL 7.0版时，需要您手工预处理两个版本存在的不兼容项。本文以Linux环境下连接AnalyticDB PostgreSQL 6.0版实例为例，介绍通过执行Shell脚本检查常规不兼容项的方法。
注意事项
业务SQL、自定义存储过程、自定义函数和自定义视图不包含在检查项目内，您需要根据实际情况在AnalyticDB PostgreSQL 7.0版中进行验证。
Shell脚本参考
#!/bin/bash
#
# Copyright (c) 2023, Alibaba Group, Inc.
#
# Description: check unsupported items before upgrade instance.
# Usage: sh 6x_to_7x_check.sh <PGHOST> <PGPORT> <PGUSER> <PGPASSWORD>
# CheckList:
# 1) 检查实例版本
# 2) 检查libraries
# 4) 检查表字段类型
# 5) 检查oss_ext外表
# 6) 检查扩展模块
# 7) 检查存储过程/函数
# Notice: 如果提示错误信息，请人工修改数据库对应项。
#
if [[ $# -lt 4 ]]; then
echo "Usage: $0 <PGHOST> <PGPORT> <PGUSER> <PGPASSWORD>"
exit 1
fi
export PGHOST=$1
export PGPORT=$2
export PGUSER=$3
export PGPASSWORD=$4
db_ver=`psql -d postgres -c "copy (select version()) to stdout"`
db_names=`psql -d postgres -c "copy (select sodddatname from gp_toolkit.gp_size_of_database) to stdout"`
db_names=(${db_names})
db_len=${#db_names[@]}
unsupport7x_ext="('adbpg_desensitization', 'adbpg_hardware_bench', 'address_standardizer', 'address_standardizer_data_us', 'auto_partition', 'automerge_status', 'diskquota', 'fastann', 'hyjal_pb_formatter', 'madlib', 'morton_code', 'multi_master', 'multicorn', 'open_analytic', 'oss_ext', 'pljava', 'plpython2u', 'plpythonu', 'querycache', 'redis_fdw')"
unsupport7x_type="('abstime', 'reltime', 'tinterval', 'unknown')"
# 检查实例版本
check_version()
{
echo ''
echo $db_ver
echo ''
echo '********** check base version...'
base_time=`date -d "2023-01-31" +%s`
db_verdate=${db_ver##*compiled on}
seconds=`date -d "$db_verdate" +%s`
if [[ $seconds -lt $base_time ]]; then
echo 'ERROR: please upgrade minor version...'
else
echo 'pass......'
fi
}
# 检查libraries
check_libraries()
{
echo ''
echo '********** check untransferred libraries...'
count=`psql -d postgres -c "copy (select count(1) from pg_catalog.pg_library) to stdout"`
if [[ $count -gt 0 ]]; then
psql -d postgres -c "select name,lanname language from pg_catalog.pg_library;"
echo "ERROR: please drop unsupported libraries manually..."
else
echo 'pass......'
fi
}
# 检查表字段类型
check_table_ftype()
{
echo ''
echo '********** check unsupported table field types...'
count=0
if [[ $db_ver == *9.4*6.* ]]; then
for ((i=0; i<$db_len; ++i)); do
sql="select count(1) from pg_catalog.pg_class c,pg_catalog.pg_attribute a,pg_catalog.pg_type t where
a.atttypid=t.oid and a.attrelid=c.oid and a.attnum>0 and c.relnamespace <> 11 and t.typname in $unsupport7x_type"
count1=`psql -d ${db_names[$i]} -c "copy ($sql) to stdout"`
count=$((count + count1))
if [[ $count1 -gt 0 ]]; then
sql="select '${db_names[$i]}' dbname,n.nspname schema,c.relname table_name,a.attname field_name,t.typname field_type from
pg_catalog.pg_namespace n,pg_catalog.pg_class c,pg_catalog.pg_attribute a,pg_catalog.pg_type t
where a.atttypid=t.oid and n.oid=c.relnamespace and a.attrelid=c.oid and a.attnum>0 and c.relnamespace <> 11 and t.typname in $unsupport7x_type order by schema,table_name;"
psql -d ${db_names[$i]} -c "$sql"
fi
done
fi
if [[ $count -gt 0 ]]; then
echo 'ERROR: please alter table field types manually...'
else
echo 'pass......'
fi
}
#检查oss_ext外部表
check_oss_ext()
{
echo ''
echo '********** check oss external table...'
count=0
if [[ $db_ver == *9.4*6.* ]]; then
for ((i=0; i<$db_len; ++i)); do
count1=`psql -d ${db_names[$i]} -c "copy (select count(*) from pg_class c join pg_exttable e on c.oid = e.reloid where c.relstorage = 'x' and e.urilocation[1] like '%oss://%') to stdout"`
count=$((count + count1))
if [[ $count1 -gt 0 ]]; then
psql -d ${db_names[$i]} -c "select '${db_names[$i]}' dbname, c.relname from pg_class c join pg_exttable e on c.oid = e.reloid where c.relstorage = 'x' and e.urilocation[1] like '%oss://%';"
fi
done
fi
if [[ $count -gt 0 ]]; then
echo 'WARN: please drop oss external table manually...'
echo 'HINT: oss external table is unsupported, please change to oss foreign table'
else
echo 'pass......'
fi
}
# 检查扩展模块
check_extensions()
{
echo ''
echo '********** check unsupported extensions...'
count=0
if [[ $db_ver == *9.4*6.* ]]; then
for ((i=0; i<$db_len; ++i)); do
count1=`psql -d ${db_names[$i]} -c "copy (select count(1) from pg_catalog.pg_extension where extname in $unsupport7x_ext) to stdout"`
count=$((count + count1))
if [[ $count1 -gt 0 ]]; then
psql -d ${db_names[$i]} -c "select '${db_names[$i]}' dbname,extname,extversion from pg_catalog.pg_extension where extname in $unsupport7x_ext;"
fi
done
fi
if [[ $count -gt 0 ]]; then
echo 'WARN: please drop useless extensions manually...'
echo 'HINT: 1. please change plpythonu to plpython3u(include related functions) 2. oss_ext is unsupported, please change to oss_fdw'
echo 'REF DROP EXTENSION SQL: drop extension <name> '
else
echo 'pass......'
fi
}
check_version
check_libraries
check_table_ftype
check_oss_ext
check_extensions参数说明如下：
参数 | 说明 |
<PGHOST> | AnalyticDB PostgreSQL 6.0版实例的连接地址。 |
<PGPORT> | AnalyticDB PostgreSQL 6.0版实例的端口号。 |
<PGUSER> | 连接AnalyticDB PostgreSQL 6.0版实例的数据库账号。 |
<PGPASSWORD> | 账号对应的密码。 |
操作步骤
执行以下命令在Linux设备中安装postgresql客户端。
sudo yum install postgresql
查看Linux设备外网地址。登录AnalyticDB PostgreSQL控制台，将Linux设备的外网IP地址添加至AnalyticDB PostgreSQL 6.0版实例的白名单中，详情请参见设置白名单。
使用Linux设备连接待检查不兼容项的AnalyticDB PostgreSQL 6.0版实例。
psql -h <PGHOST> -p <PGPORT> -U <PGUSER>
编辑保持Shell脚本，如6x_to_7x.sh的脚本文件，运行以下命令执行检查不兼容项的脚本文件6x_to_7x_check.sh。
sh 6x_to_7x_check.sh <PGHOST> <PGPORT> <PGUSER> <PGPASSWORD>根据提示信息，修改数据库中对应的不兼容项，修改完毕后，请再次执行脚本查看结果是否通过检查。
检查结果参考
检查通过情况（运行脚本后全部显示“pass”，或者不包含“ERROR”信息）
********** check base version...
pass......
********** check untransferred libraries...
pass......
********** check unsupported table field types...
pass......
********** check oss external table...
pass......
********** check unsupported extensions...
pass......存在不兼容项的检查情况（提示ERROR信息的必须修改）
PostgreSQL 9.4.26 (Greenplum Database 6.6.0 build dev) on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 9.2.1 20200522 (Alibaba 9.2.1-3 2.17), 64-bit compiled on Dec 15 2023 16:44:16
********** check base version...
ERROR: please upgrade minor version...
********** check untransferred libraries...
name | language
----------+----------
select_1 | plpgsql
(1 row)
WARN: please transfer libraries manually...
********** check unsupported table field types...
dbname | schema | table_name | field_name | field_type
--------+--------+------------+------------+------------
adbpg | public | test2 | name | unknown
(1 row)
ERROR: please alter table field types manually...
********** check oss external table...
dbname | relname
--------+----------
testdb | testoss
testdb | testoss2
testdb | testoss3
(3 rows)
WARN: please drop oss external table manually...
HINT: oss external table is unsupported, please change to oss foreign table
********** check unsupported extensions...
dbname | extname | extversion
--------+---------+------------
adbpg | fastann | 1.0
(1 row)
WARN: please drop useless extensions manually...
REF DROP EXTENSION SQL: drop extension <name> 提示信息 | 修改方式 |
ERROR: please upgrade minor version... | 升级实例内核小版本，详情请参见版本升级。 |
WARN: please transfer libraries manually... | 提示AnalyticDB PostgreSQL 6.0版库中用到了library，这些library不会自动迁移，升级后您需要手工进行迁移。 |
ERROR: please alter table field types manually... | 提示AnalyticDB PostgreSQL 6.0版库表存在不兼容的字段类型，需要在AnalyticDB PostgreSQL 6.0版库中手动修改。 |
WARN: please drop oss external table manually... | 提示AnalyticDB PostgreSQL 6.0版库使用了OSS External TABLE，在AnalyticDB PostgreSQL 7.0版中不再支持，需要转换为OSS Foreign TABLE。 |
WARN: please drop useless extensions manually... | 提示AnalyticDB PostgreSQL 6.0版库中存在不兼容的扩展模块，这些模块不会迁移。
|
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