安装plpython时Postgres数据库崩溃

Question

我正在尝试在我的Postgres 9.1中安装plpython但它崩溃了服务器:

postgres@dataserver1:~> /opt/postgres/9.1/bin/psql -d mydb
psql.bin (9.1.4)
Type "help" for help.

mydb=# create language 'plpythonu';
The connection to the server was lost. Attempting reset: Failed.

我安装了python 2.6.8并且在系统中声明了处理程序:

select tmplname, tmplhandler, tmpllibrary from pg_pltemplate where tmplname like 'plpython%'

"plpythonu"  | "plpython_call_handler"  | "$libdir/plpython2"
"plpython2u" | "plpython2_call_handler" | "$libdir/plpython2"

并且处理程序安装在$ libdir中:

postgres@dataserver1:~> ll /opt/postgres/9.1/lib/postgresql/plpython*
-rwxr-xr-x 1 root root 6686333 Aug 17 14:27 /opt/postgres/9.1/lib/postgresql/plpython2.so

关于此的任何线索都是贬值的

编辑

我试过创建扩展plpythonu,plpython2u和plpython3u,所有这些都崩溃了服务器.

在文档中阅读一点我发现\ dx命令列出已安装的扩展:

mydb=# \dx
                 List of installed extensions
  Name   | Version |   Schema   |         Description
---------+---------+------------+------------------------------
 plpgsql | 1.0     | pg_catalog | PL/pgSQL procedural language
(1 row)

所以我想唯一安装的扩展名是plpgsql.

mydb=# select name, installed_version from pg_available_extensions where name like '%python%';
    name    | installed_version
------------+-------------------
 plpython2u |
 plpython3u |
 plpythonu  |
(3 rows)

和我的扩展目录:

postgres@dataserver1:/opt/postgres/9.1/share/postgresql/extension> ll *python*
-rw-r--r-- 1 root root 351 Aug 20 17:32 plpython2u--1.0.sql
-rw-r--r-- 1 root root 196 Aug 20 17:32 plpython2u.control
-rw-r--r-- 1 root root 402 Aug 20 17:32 plpython2u--unpackaged--1.0.sql
-rw-r--r-- 1 root root 351 Jun  1 02:54 plpython3u--1.0.sql
-rw-r--r-- 1 root root 196 Jun  1 02:54 plpython3u.control
-rw-r--r-- 1 root root 402 Jun  1 02:54 plpython3u--unpackaged--1.0.sql
-rw-r--r-- 1 root root 347 Aug 20 17:32 plpythonu--1.0.sql
-rw-r--r-- 1 root root 194 Aug 20 17:32 plpythonu.control
-rw-r--r-- 1 root root 393 Aug 20 17:32 plpythonu--unpackaged--1.0.sql

编辑

我在Linux SuSE上运行,但是明白了.

在我的postgres安装中,pl-lang库位于.../postgres/9.1/lib/postgres中.里面有plpython2.so和plpython3.so

检查这些文件的动态链接库:

alfonso@dataserver1:/opt/postgres/9.1/lib/postgresql> sudo ldd plpython2.so
        linux-vdso.so.1 =>  (0x00007fff5e945000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f64064df000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f64062da000)
        libutil.so.1 => /lib64/libutil.so.1 (0x00007f64060d7000)
        libm.so.6 => /lib64/libm.so.6 (0x00007f6405e5e000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f6405ae9000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f6406b2e000)

对于plpython3.so,没有任何python库的引用

但我已经安装了python 2.6和python 3.2.请注意,我希望安装python 2的扩展.

是的,CREATE EXTENSION仍在崩溃:

mydb=# create extension plpython2u;
The connection to the server was lost. Attempting reset: Failed.
!> \q

Answer 1

注意:从PostgreSQL 9.1开始,大多数过程语言都被制作成"扩展",因此应该使用CREATE EXTENSION而不是CREATE LANGUAGE 进行安装.现在应该直接使用CREATE LANGUAGE来限制扩展安装脚本.如果数据库中有"裸"语言(可能是升级后的结果),则可以使用CREATE EXTENSION langname FROM unpackaged将其转换为扩展名.

要在特定数据库中安装PL/Python:

从shell命令行使用createlang plpythonu dbname

警告

不推荐使用createlang,可能会在将来的Pos​​tgreSQL版本中删除它.建议直接使用CREATE EXTENSION命令.

http://www.postgresql.org/docs/9.1/static/plpython.html

编辑

一步步

下载postgresql-9.1.5-1-windows.exe并安装它.

首先让我们看看那里已有的东西.

mydb=# SELECT * FROM pg_available_extensions
mydb-# WHERE name LIKE '%python%' ORDER BY name;
    name    | default_version | installed_version |                  comment

------------+-----------------+-------------------+-------------------------------------------
 plpython2u | 1.0             |                   | PL/Python2U untrusted procedural language
 plpython3u | 1.0             |                   | PL/Python3U untrusted procedural language
 plpythonu  | 1.0             |                   | PL/PythonU untrusted procedural language
(3 Zeilen)

没有安装!!

查看lib文件夹,只有.

....\PostgreSQL的\ 9.1\LIB\plpython3.dll.

所以我必须尝试安装plpython3u.

mydb=# CREATE EXTENSION plpython3u;
ERROR:  unknown error »$libdir/plpython3.dll«

plpython3.dll一定有问题.

展望plpython3.dll有一个参考python32.dll.

......

Export Table:
  Name:                          plpython3.dll
  Time Date Stamp:               0x502B366A (15.08.2012 06:40:58)
  Version:                       0.00
  Ordinal Base:                  1
  Number of Functions:           9
  Number of Names:               9

  Ordinal   Entry Point   Name
        1   0x00001005    Pg_magic_func
        2   0x00001019    PyInit_plpy
        3   0x0000101E    _PG_init
        4   0x00001023    pg_finfo_plpython3_call_handler
        5   0x0000100F    pg_finfo_plpython3_inline_handler
        6   0x0000100A    pg_finfo_plpython3_validator
        7   0x00001028    plpython3_call_handler
        8   0x00001014    plpython3_inline_handler
        9   0x0000102D    plpython3_validator

Import Table:
  libintl-8.dll
    Import Adress Table:                0x00016628
    Import Name Table:                  0x0001617C
    Time Date Stamp:                    0x00000000
    Index of first forwarder reference: 0x00000000

    0x000169E4        28   libintl_dngettext
    0x000169D0        27   libintl_dgettext

  **python32.dll**
    Import Adress Table:                0x0001686C
    Import Name Table:                  0x000163C0
    Time Date Stamp:                    0x00000000
    Index of first forwarder reference: 0x00000000
  ....

• 我下载并安装python-3.2.3.msi.我发现只有python3.dll
• 将python3.dll复制到....\PostgreSQL\9.1\lib并将其重命名为 python32.dll

回到我输入的SQL Shell中

mydb=# CREATE EXTENSION plpython3u FROM unpackaged;

我收到了消息

CREATE EXTENSION

寻找结果:

mydb=# SELECT * FROM pg_available_extensions
mydb-# WHERE name LIKE '%python%' ORDER BY name;

它是plpython3u的installed_version 1.0

我也可以在PgAdmin III中看到它

希望有所帮助!

编辑:

手动尝试

步骤1

mydb = #CREATE PROCEDURAL LANGUAGE plpython2u;

第2步

mydb =#注释程序语言plpython2u是'PL/Python2U不受信任的程序语言';

第3步

mydb =#CREATE EXTENSION plpython2u FROM unpackaged;

用Python 2.6.5测试