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.