SAP Business One 9.0, version for SAP HANA PL04 is already available, if you are planing to upgrade to the latest patch of SAP Business One 9.0 version for SAP HANA you can now upgrade directly to PL04.
SAP Business One 9.0, version for SAP HANA PL04 is synchronized with SAP HANA SP06 Rev 67.
Please check the corresponding central note for more details:
1941072 - Overview Note for SAP Business One 9.0, version for SAP HANA PL4 (S-user required)
B1H PL04:
Please check the following note if you haven't upgraded yet to PL04 (fixed on PL04):
1943747 - Error "Invalid SAML response" occurred after 90 days' installation(S-user required)
HANA Rev 67:
To avoid possible statistics server problems (e.g. running out of memory), we recommend that you change some configurations in SAP HANA before upgrading to SAP HANA Revision 67 or any higher version.
1943067 - Recommended configuration setting when you upgrade HANA to version 67 or higher(S-user required)
How to perform a schema backup (available since HANA 1.0 SP00)
http://scn.sap.com/docs/DOC-44558#Schema_Level_Backup
How to import the schema backup with a new schema name
Since HANA Rev 61, you are able to export a schema, then import the schema with a new name. Please check below for details:
1888585 - SAP HANA appliance: Revision 61 of SAP HANA database (S-user required)
"IMPORT <table_name_list> AS <export_import_format> FROM <path> [WITH <export_import_option_list>] ... | RENAME SCHEMA <source_schema1> TO <target_schema1>, <source_schema2> TO <target_schema2>, ..."
If you have the following error message while importing: "SAP DBTech JDBC: [2]: general error: DE.ETL_S DE:INV1_tracking not found in the import directory." please check the following note:
1944485 - fail to import schema using rename function in HANA (S-user required)