摘要： WMSSYS is used to store all the metadata information for Oracle Workspace Manager. This user was introduced in Oracle9i and (like most Oracle9i supporting accounts) is locked by default. The user account is locked because we want the password to be public but restrict access to the account to the SYS schema. So, to unlock the account, DBA privileges are required. This post will show you on how to use the method WMSSYS.WM_CONCAT to convert the row and columns in data table. 阅读全文