GeezerVison

Closes #225. Partly addresses #172: the password no longer has to appear on the command line.

Summary

utplsql now accepts a connect string with no user or password. The JDBC driver then reads the credentials from an Oracle Wallet, the same way sqlplus /@MYDB and SQLcl do:

utplsql run /@MYDATABASE
utplsql run "/@MYDATABASE?TNS_ADMIN=/path/to/network/admin"

Details

• TNS_ADMIN handling (DataSourceProvider)
  • The JDBC driver resolves tnsnames.ora and ojdbc.properties (where the wallet location goes) from the TNS_ADMIN environment variable on its own.
  • The CLI now sets oracle.net.tns_admin to ORACLE_HOME/network/admin only when neither -Doracle.net.tns_admin nor TNS_ADMIN is set. Previously it set the property whenever ORACLE_HOME was set, and because the property takes precedence in the driver, that silently overrode TNS_ADMIN.
  • An explicit -Doracle.net.tns_admin still overrides everything.

Behaviour change

If both TNS_ADMIN and ORACLE_HOME are set and point to different directories, TNS_ADMIN now wins, because the CLI no longer overrides it with the ORACLE_HOME path. This matches how Oracle client tools resolve it. Connect strings that worked before are parsed the same way.