Georaster driver doesn't work in gdal_translate when password is not in command-line

[fechen123]

Expected behavior and actual behavior.

gdal_translate -of georaster geor:/@aaa,table_name,col_name ....

returns error message: ERROR 1: ORA-01005: null password given; logon denied

Steps to reproduce the problem.

1 Create an Oracle Wallet and store the user/pwd in the wallet:

mkstore -wrl <wallet_location> -create
mkstore -wrl <wallet_location> -createCredential <alias> <dbuser>

2 in tnsnames.ora, add entry for <alias>
In sqlnet.ora, add:
WALLET_LOCATION = (SOURCE = (METHOD = FILE) (METHOD_DATA = (DIRECTORY = <wallet_location>)))
SQLNET.WALLET_OVERRIDE = TRUE
SSL_CLIENT_AUTHENTICATION = FALSE

3 Upload the raster into a GeoRaster object in Oracle database:

gdal_translate -of georaster geor:/@<alias>,<table_name>,<column_name> -co "..."

GDAL version and provenance

This issue is on top of the fix on issue 3768.

[fechen123]

I am working on the fix.