Regarding limits in oracle 8

Hey guys, i need your experience here;)
We use oracle 8, and today some customers reported that regarding a table (financial one... ouch) all the entries they did since the 23rd october dont appear, the lines are blank , but incremented
is there a limit to the number of datas ? entries?
should i do a purge of the tables ( it has never been done before.; and i took the job 3 weeks ago so i dont know all the history ;) )
all the help you can provide will be real helpful guys
in advance thx

Limits? Entries? Purge?
Don't do anything rash.
If you don't know what you're doing or why you're doing it, action for the sake of action will probably just cause more issues.
There's not enough information for anyone to diagnose the problem.
Whilst an upgrade to a supported should be a priority target in the longer term, in the immediate term, why is it likely to solve the problem?
You need to gather evidence, try to reproduce the problem and get to the root cause.
If it was an Oracle bug then yes, you're going to wish you were on a supported version but it's more likely to be something else.
Start with the evidence you've got.
These "blank" rows in the database. How have you determined that they are blank?
"blank but incremented" what does that mean?
Edited by: DomBrooks on Nov 3, 2010 11:33 AM

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    CONSTRAINT "ATTENDANCE_EMPLOYEE_FK1"
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    REFERENCES
    "DBO"."EMPLOYEE" ("EMPLOYEE_CODE") ENABLE
    ===============================================================
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    "DBO"."DIVISION" ("DIVISION_CODE") ON DELETE
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    CREATE TABLE "DBO"."DIVISION"
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    VARCHAR2(30 BYTE),
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    VARCHAR2(20 BYTE),
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    VARCHAR2(40 BYTE),
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    VARCHAR2(20 BYTE),
    "UNIT_HEAD_DESIG"
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    VARCHAR2(30 BYTE),
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    VARCHAR2(30 BYTE),
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    "CREATED_BY"
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    DATE,
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    VARCHAR2(20 BYTE),
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    DATE NOT NULL ENABLE,
    VARCHAR2(1 BYTE) NOT NULL ENABLE,
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    VARCHAR2(30 BYTE) NOT NULL ENABLE,
    "GRADE"
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    VARCHAR2(6 BYTE),
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    VARCHAR2(3 BYTE) NOT NULL ENABLE,
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    "PROBATION_DATE"
    DATE,
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    DATE,
    "PROMOTION_DATE"
    DATE,
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    DATE,
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