云原生数据仓库AnalyticDB PostgreSQL版（简称ADB PG）集群从4.3版本升级到6.0版本时存在一些不兼容项，需要您手工进行预处理。本文以Linux环境下连接AnalyticDB PostgreSQL 4.3版实例为例，介绍了通过执行Shell脚本检查常规不兼容项的方法。Windows环境可参考脚本SQL语句执行检查。
注意事项
业务SQL、自定义存储过程或函数、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 6.0版中进行验证。
Shell脚本参考
#!/bin/bash
#
# Copyright (c) 2020, Alibaba Group, Inc.
#
# Description: check unsupported items before upgrade instance.
# Usage: sh 4x_to_6x_check.sh <PGHOST> <PGPORT> <PGUSER> <PGPASSWORD>
# CheckList:
# 1) 检查实例版本
# 2) 检查libraries
# 3) 检查表分布键
# 4) 检查表字段类型
# 5) 检查扩展模块
# 6) 检查存储过程/函数
# 7) 检查视图
# 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[@]}
unsupport6x_ext="('feature_extractor','varbitx')"
unsupport6x_disted_type="('money','tinterval')"
unsupport6x_type="('unknown')"
# 检查实例版本
check_version()
{
echo ''
echo $db_ver
echo ''
echo '********** check base version...'
base_time=`date -d "2020-08-31" +%s`
db_verdate=${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 "WARN: please transfer libraries manually..."
else
echo 'pass......'
fi
}
# 检查表分布键
check_table_did()
{
echo ''
echo '********** check unsupported table distributedId types...'
count=0
if [[ $db_ver == *8.2*4.3* ]]; then
for ((i=0; i<$db_len; ++i)); do
sql="select count(1) from pg_catalog.pg_class c,pg_catalog.pg_attribute a,pg_catalog.pg_type t,pg_catalog.gp_distribution_policy p where
a.atttypid=t.oid and a.attrelid=c.oid and p.localoid=c.oid and a.attnum=any(p.attrnums) and a.attnum>0 and t.typname in $unsupport6x_disted_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 distributed_field,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,pg_catalog.gp_distribution_policy p
where a.atttypid=t.oid and n.oid=c.relnamespace and a.attrelid=c.oid and p.localoid=c.oid and a.attnum=any(p.attrnums) and a.attnum>0 and t.typname in $unsupport6x_disted_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 distributedId types 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 [[ $db_ver == *8.2*4.3* ]]; then
for ((i=0; i<$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 t.typname in $unsupport6x_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 t.typname in $unsupport6x_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
}
# 检查扩展模块
check_extensions()
{
echo ''
echo '********** check unsupported extensions...'
count=0
if [[ $db_ver == *8.2*4.3* ]]; then
for ((i=0; i<$db_len; ++i)); do
count1=`psql -d ${db_names[$i]} -c "copy (select count(1) from pg_catalog.pg_extension where extname in $unsupport6x_ext) to stdout"`
count=$((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 $unsupport6x_ext;"
fi
done
fi
if [[ $count -gt 0 ]]; then
echo 'WARN: please drop useless extensions manually...'
echo 'REF DROP EXTENSION SQL: drop extension <name> '
else
echo 'pass......'
fi
}
# 检查存储过程/函数
check_procs()
{
echo ''
echo '********** check unsupported procs...'
count=0
clause="lower(p.prosrc) like '%pg_stat_activity%'
and ( lower(p.prosrc) like '%.procpid%' or lower(p.prosrc) like '%.current_query%' or lower(p.prosrc) like '%.waiting%' )
and n.nspname not in ('gp_toolkit','information_schema')"
if [[ $db_ver == *8.2*4.3* ]]; then
for ((i=0; i<$db_len; ++i)); do
count1=`psql -d ${db_names[$i]} -c "copy (select count(1) from pg_catalog.pg_proc p join pg_catalog.pg_namespace n on p.pronamespace = n.oid where $clause) to stdout"`
count=$((count + count1))
if [[ $count1 -gt 0 ]]; then
psql -d ${db_names[$i]} -c "select '${db_names[$i]}' dbname,n.nspname schemaname,p.proname from pg_catalog.pg_proc p join pg_catalog.pg_namespace n on p.pronamespace = n.oid where $clause;"
fi
done
fi
if [[ $count -gt 0 ]]; then
echo 'WARN: please drop/repair proc/function manually after transferred...'
else
echo 'pass......'
fi
}
# 检查视图
check_views()
{
echo ''
echo '********** check unsupported views...'
count=0
clause="lower(definition) like '%pg_stat_activity%'
and ( lower(definition) like '%.procpid%' or lower(definition) like '%.current_query%' or lower(definition) like '%.waiting%' )
and schemaname not in ('gp_toolkit','information_schema')"
if [[ $db_ver == *8.2*4.3* ]]; then
for ((i=0; i<$db_len; ++i)); do
count1=`psql -d ${db_names[$i]} -c "copy (select count(1) from pg_catalog.pg_views where $clause) to stdout"`
count=$((count + count1))
if [[ $count1 -gt 0 ]]; then
psql -d ${db_names[$i]} -c "select '${db_names[$i]}' schemaname,viewname from pg_catalog.pg_views where $clause;"
fi
done
fi
if [[ $count -gt 0 ]]; then
echo 'WARN: please drop useless views manually...'
else
echo 'pass......'
fi
}
check_version
check_libraries
check_table_did
check_table_ftype
check_extensions
check_procs
check_views| 参数 | 说明 |
|---|---|
| <PGHOST> | AnalyticDB PostgreSQL 4.3版实例的连接地址。 |
| <PGPORT> | AnalyticDB PostgreSQL 4.3版实例的端口号。 |
| <PGUSER> | 连接AnalyticDB PostgreSQL 4.3版实例的用户名。 |
| <PGPASSWORD> | 上述用户名对应的密码。 |
操作步骤
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 distributedId types... pass...... ********** check unsupported table field types... 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 8.2.15 (Greenplum Database 4.3.99.00 build dev) compiled on May 2 2020 09:35:15 ********** 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 distributedId types... dbname | schema | table_name | distributed_field | field_type --------+--------+------------+-------------------+------------ adbpg | public | test1 | id | money (1 row) ERROR: please alter table distributedId types 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 unsupported extensions... dbname | extname | extversion --------+---------+------------ adbpg | varbitx | 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... 登录AnalyticDB PostgreSQL控制台将实例进行小版本升级，详情请参见版本升级。 WARN: please transfer libraries manually... 提示4.3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 distributedId types manually... 提示4.3库中存在不兼容的表分布键，需要您在4.3库中手动修改。 ERROR: please alter table field types manually... 提示4.3库表存在不兼容的字段类型，需要在4.3库中手动修改。 WARN: please drop useless extensions manually... 提示4.3库中存在不兼容的扩展模块，这些模块不会迁移，如果用到需要考虑修改涉及模块的表/存储过程等，如果没用可考虑删除。