Hi!

The following problems happen on my FB's systems. (3 independent system,
with different Opsystem, but the problems are same)
Unfortunately the probles are not permanent. Only sometimes. ~1/day. But
this systems are 7*24 safety systems, and this is unacceptable.

Long ago wa use FB RC2 with Borland DBExpress, with no problem.
Now, we upgrade the systems to Lastest FB, and the Lastest DBExpress,
and change the DB structure.

I dont use storedprocs, triggers, UDF's. Only simple SELECT, UPDATE and
DELETE.

1.
SQL: SELECT SZEMELYAZ, DATUM, HETNAP, NAPTIPUS, MUNKAREND,
EREDETIMUNKAREND, MRMUSZAK, MUSZAKCSOPORT, MUSZAKJELZO, ADATJAVITOTT,
KEZINAPLO, KEZIELOJEGYZES, HIBASNAP, ELLENORZOTT, EGESZNAPOSTAVOLLET_JC,
BE_FORRAS, BE_IDO, BE_IRANY, BE_ESEMENY, BE_SPEC, KI_FORRAS, KI_IDO,
KI_IRANY, KI_ESEMENY, KI_SPEC, BE_ELMELETI, KI_ELMELETI, BE_MUNKA,
KI_MUNKA, E_KEZI_JC, E_KEZI_KEZDET, E_KEZI_VEGE, E_KEZI_FIX_JC,
E_KEZI_FIX_KEZDET, E_KEZI_FIX_VEGE, E_TERMINAL_JC, UTOLSOFELDOLGOZAS,
MRMCSERE_IDO, MRMCSERE_KEZELOAZ, MRMCSERE_PCAZ, MRMCSERE_TIPUS,
MRMCSERE_MRAZ, MRMCSERE_SPEC, BIN_DATA, BIN_WORK FROM MI_NAPIADAT WHERE
SZEMELYAZ=:P_SZEMELYAZ AND DATUM=:P_DATUM
Table (MI_NAPIADAT): some integer, and float field and
"BIN_DATA" VARCHAR(4000) CHARACTER SET WIN1250,
"BIN_WORK" VARCHAR(4000) CHARACTER SET WIN1250,

This SQL with this table, sometimes generate the following result:
"Cursor unknown" and the interbase.log: "gds_alloc: memory pool
corrupted"

And then minute-to-minute is much "gds_free: attempt to release bad
block" and finally: "C:\WinAccess\IB\bin\ibserver.exe: terminated
abnormally (-1)"
And ... Restart...

2.
SQL: SELECT SZEMELYAZ, DATUM, HETNAP, NAPTIPUS, MUNKAREND,
EREDETIMUNKAREND, MRMUSZAK, MUSZAKCSOPORT, MUSZAKJELZO, ADATJAVITOTT,
KEZINAPLO, KEZIELOJEGYZES, HIBASNAP, ELLENORZOTT, EGESZNAPOSTAVOLLET_JC,
BE_FORRAS, BE_IDO, BE_IRANY, BE_ESEMENY, BE_SPEC, KI_FORRAS, KI_IDO,
KI_IRANY, KI_ESEMENY, KI_SPEC, BE_ELMELETI, KI_ELMELETI, BE_MUNKA,
KI_MUNKA, E_KEZI_JC, E_KEZI_KEZDET, E_KEZI_VEGE, E_KEZI_FIX_JC,
E_KEZI_FIX_KEZDET, E_KEZI_FIX_VEGE, E_TERMINAL_JC, UTOLSOFELDOLGOZAS,
MRMCSERE_IDO, MRMCSERE_KEZELOAZ, MRMCSERE_PCAZ, MRMCSERE_TIPUS,
MRMCSERE_MRAZ, MRMCSERE_SPEC, BIN_DATA, BIN_WORK FROM MI_NAPIADAT WHERE
SZEMELYAZ=:P_SZEMELYAZ AND DATUM=:P_DATUM

Result : "SQLDA missing or incorrect version, or incorrect number/type
of variables", and the interbase log: same as the previous.

I think MAYBE the varchar(4000) with charset win1250 is the key of the
problem??? Only this two field add to database, before the problem
started.

Please help! This two field is very requied to the system datas. I
cannot replace.