How to reset a server error '25P02 in_failed_sql_transaction'

Hello,

Due to a wrong human input in the GUI of our application our
application server, from the point of view of the PostgreSQL server it
is the PostgreSQL client, issues a broken ESQL/C command to the PostgreSQL
server, here from our own debug logging the command and the error
message of the server:


posDebug: [27.12.2019 15:20:59:043] stmt: SELECT ctid, * from titel_datum WHERE desk>='*2019' AND feldnr IN ( 2 )
ORDERBY desk ASC , feldnr ASC
 
posDebug: [27.12.2019 15:20:59:043] ESQL: PREPARE sid_titel_datum  FROM :select_anw;
==== sqlca ====
sqlcode: -400
sqlerrm.sqlerrml: 61
sqlerrm.sqlerrmc: invalid input syntax for type date: »*2019« on line 918
...

All subsequent correct (SELECT ...) statements get rejected with, for example: 


...
posDebug: [27.12.2019 15:20:59:044] stmt: SELECT ctid, * from titel_datum WHERE desk>='31.12.1900' AND feldnr IN ( 2 )
ORDER BY desk ASC , feldnr ASC
 
posDebug: [27.12.2019 15:20:59:044] ESQL: PREPARE sid_titel_datum  FROM :select_anw;
==== sqlca ====
sqlcode: -400
sqlerrm.sqlerrml: 105
sqlerrm.sqlerrmc: current transaction is aborted, commands ignored until end of transaction block on line 918
sqlerrd: 0 0 0 0 0 0
sqlwarn: 0 0 0 0 0 0 0 0
sqlstate: 25P02
========posSqlError=======
...

Note: we are not in some kind TRANSACTION block, like 'EXEC SQL BEGIN TRANSACTION;'

What is the correct way to abort the "transaction" as requested by the PG
server to return to normal operations?

Thanks

    matthias

-- 
Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045
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