Problems with the blog "HANA backup script hint..."

Question

Hello,
That's not a good start for the backup start hints of the blog.
Issue here is that SAP is still updating and fixing and changing the HANA database (rev.20 and higher is still rampup - so this is what is expected). In such case it is difficult (or maybe impossible) to write blog that would be valid over longer period of time.
1. If I try to execute
select user() from dual
I got the error
259: invalid table name: DUAL( used schemas: schemaName , defaultSchemaName SYSTEM): line 1 col 20 (at pos 19) SQLSTATE: HY000.
The error is complaining that table dual is not present in you default schema SYSTEM. Table dual used to be in schema SYS in older revisions but now I can confirm that since rev.20 it is gone. There is table DUMMY which is having similar purpose but when I try to make query against this table i got error "Segmentation fault". So this is either error during upgrade, during backup/restore or it is now feature that is not working as intended.
2. If I try to execute
create user backop identified by Aa12345678
I got the error
257: sql syntax error: line 1 col 20 (at pos 20) SQLSTATE: HY000
Here SAP changed the syntax - now it is "create user backop password Aa12345678"
Tomas

Answer 1

Tomas Krojzl wrote:
> The error is complaining that table dual is not present in you default schema SYSTEM. Table dual used to be in schema SYS in older revisions but now I can confirm that since rev.20 it is gone. There is table DUMMY which is having similar purpose but when I try to make query against this table i got error "Segmentation fault". So this is either error during upgrade, during backup/restore or it is now feature that is not working as intended.
> Tomas
Indeed, the DUAL table is gone. I hope it is not because of me making fun of this Oracle-originated table in HANA db: http://www.sdn.sap.com/irj/scn/weblogs?blog=/cs/user/view/cs_msg/86566
Btw, the second table worked just fine for me (Rev 20):
hana-rep:/sapmnt/HNA/exe/linuxx86_64/hdb # ./hdbsql
Welcome to the SAP HANA Database interactive terminal.
Type:  h for help with commands
       q to quit
hdbsql=> c -i 00 -u system -p ...
Connected to HNA@hana-rep:30015
hdbsql HNA=> select * from dual
* 259: invalid table name: DUAL( used schemas: schemaName , defaultSchemaName SYSTEM): line 1 col 15 (at pos 14) SQLSTATE: HY000
hdbsql HNA=> select * from DUMMY
1 row selected (3727 usec)
Regards,
-Vitaliy