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通过源码安装ora2pg成功后，查询帮助信息报错

[root@localhost bin]# ora2pg --help
Can't locate open.pm in @INC (you may need to install the open module) (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at /usr/local/share/perl5/Ora2Pg.pm line 1931.
BEGIN failed--compilation aborted at /usr/local/share/perl5/Ora2Pg.pm line 1931.
Compilation failed in require at /usr/local/bin/ora2pg line 27.
BEGIN failed--compilation aborted at /usr/local/bin/ora2pg line 27.

重新安装perl，发现安装的是同样的版本，但是问题解决了，奇怪

 [root@localhost bin]# yum install perl

依赖的库版本如下：

[root@localhost ora2og]# perl check.pl
CPAN         -- 2.36
DBD::Oracle  -- 1.83
DBD::Pg      -- 3.17.0
DBI          -- 1.643
ExtUtils::Config -- 0.008
ExtUtils::Helpers -- 0.026
ExtUtils::InstallPaths -- 0.012
IO::Tty      -- 1.17
IPC::Run     -- 20231003.0
JSON         -- 4.10
Module::Build::Tiny -- 0.047
Module::Signature -- 0.88
Ora2Pg       -- 21.1
Perl         -- 5.26.3
Readonly     -- 2.05
Test::Simple -- 1.302195
 

[root@localhost ora2og]# ora2pg --help

Usage: ora2pg [-dhpqv --estimate_cost --dump_as_html] [--option value]

    -a | --allow str  : Comma separated list of objects to allow from export.
                        Can be used with SHOW_COLUMN too.
    -b | --basedir dir: Set the default output directory, where files
                        resulting from exports will be stored.
    -c | --conf file  : Set an alternate configuration file other than the
                        default /etc/ora2pg/ora2pg.conf.
    -d | --debug      : Enable verbose output.
    -D | --data_type STR : Allow custom type replacement at command line.
    -e | --exclude str: Comma separated list of objects to exclude from export.
                        Can be used with SHOW_COLUMN too.
    -h | --help       : Print this short help.
    -g | --grant_object type : Extract privilege from the given object type.