Mark, checking on max row size I find :

on https://www.ibphoenix.com/resources/documents/general/doc_323
"Rows are restricted to 32767 bytes."

on https://www.firebirdsql.org/en/firebird-technical-specifications/
"Maximum row size     64 KB"

Counting first reference, I'm out of bounds big time ...

CREATE TABLE TABLALOG
(
  NID ENTERO NOT NULL,
  NUSUARIO ENTERO NOT NULL,
  TSINGRESO T_STAMP,
  DALCANCE CHAR_255CI,
  DAPP CHAR_50CI,
  OEVENTO CLA_SHORT,
  DIPV4 CHAR_15,
  DIPV6 CHAR_50,
  DHOST CHAR_255CI,
  DENTIDAD CHAR_50CI,
  OACCION CHAR_50CI,
  DCONTENIDO VARCHAR(32765),
  CONSTRAINT PK_TABLALOG PRIMARY KEY (NID)
);

Where domains are:
ENTERO integer
T_TAMP is a timestamp
CHAR_255CI varchar(255) AI_CI
CHAR_50 varchar(50) AI_CI
CHAR_15 varchar(15) AI_CI
CLA_SHORT short

Database is generated as ISO-8859-1, so using 2 bytes per char, I think
I'm past all bounds..

I recreated the varchar(32765) attribute to varchar(255), backuped an restored. The error now shows on another table which has more than 32767 bytes (another log table, almost identical):
gbak:    restoring index PK_ERRORLOG
gbak:restoring data for table ERRORLOG
gbak: ERROR:message length error (encountered -32512, expected 33024)
gbak: ERROR:gds_$send failed
gbak:Exiting before completion due to errors


I guess I must use a 32 kbytes max instead of 64kbytes, right?
I'm worried that server didn't yelled at me when generating/altering database ddl .


Pablo