GoldenGate 12C的Credential Store and USERIDALIAS新特性有点类似存储钱夹，提高了配置的易用性和安全性。
--生成credentialstore文件
GGSCI (XQZT-PC) 1> add credentialstore
Credential store created in .dircrd.
--创建别名
GGSCI (XQZT-PC) 2> alter credentialstore add user c##ggadmin alias ggroot
Password:
Credential store in .dircrd altered.
--使用别名登录
GGSCI (XQZT-PC) 3> dblogin useridalias ggroot
Successfully logged into database CDB$ROOT.
GGSCI (XQZT-PC as c##ggadmin@orcl/CDB$ROOT) 4>
--也可以创建PDB的存储别名
GGSCI (XQZT-PC) 1> alter credentialstore add user c##ggadmin@pdborcl alias ggpd
borcl
Password:
Credential store in .dircrd altered.
GGSCI (XQZT-PC) 2> dblogin useridalias ggpdborcl
Successfully logged into database PDBORCL.
--查看别名
GGSCI (XQZT-PC) 1> info credentialstore
Reading from .dircrd:
Default domain: OracleGoldenGate
Alias: ggroot
Userid: c##ggadmin
Alias: ggpdborcl
Userid: c##ggadmin@pdborcl
GGSCI (XQZT-PC) 2>