Possible to disable cmd for some users?
Hi, im having a problem with one of my brothers always tries to hack into windows via cmd when he is angry at someone.
The problem is that after he did this, spit of Windows and you need to start safe mode and then collect from there.
It's not good for the computor so I ask you; Is anyway to block some users to use the cmd program?
Thank you
Hi, im having a problem with one of my brothers always tries to hack into windows via cmd when he is angry at someone.
The problem is that after he did this, spit of Windows and you need to start safe mode and then collect from there.
It's not good for the computor so I ask you; Is anyway to block some users to use the cmd program?Thank you
To run cmd, enter the administrator password.
Change your administrator password.
Create a user account for him without admin privileges. It cannot do any damage now.
t-4-2
Tags: Windows
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2790572 wrote:
Hi all
On our setting of database audit db is expanded, and verification information was resident on system tablespace.
For some reason we allow audit to the specific user.
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He wrote too much information and we want to disable this check for tommy. But we want to do without restarting database because our running System 7/24.
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The change applies only to new sessions opened by TOMMY.
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Best regards
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Published by: jmniard on June 7, 2012 06:55Hi John,.
I'm working now!
There are two problems in your code
One is the javascript for loop is not correct and incorrect values donations and as far as I know, you can't use here.
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$(document).ready(function(){ init(); });
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query not using the index for some user
Hello
I have a query that is running in less than a second for sys, system, or schema owner. However, another user (test_user) take 30 seconds to run the same query.
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Thank you for any assistance.Thank you for the display of formatting output, this output is much easier to read.
One of the first things you notice about the execution plans that is for the owner non-schema "SQL_ID, 0wcs85uywn72m, number of children 1" appears in the output of DBMS_XPLAN, while "SQL_ID 0wcs85uywn72m, child number 0" (the same SQL_ID but a different number of child) appears for the schema owner. "" Whereas the SQL_ID is the same, which indicates that the client requires exactly the same SQL statement, so it's a good start.
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filter(("SEAL_FLAG" IS NULL OR "SEAL_FLAG"'Y'))
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SELECT * FROM V$VPD_POLICY WHERE SQL_ID='0wcs85uywn72m';
As a test, I made a few minor adjustments to the example on this page:
http://Antognini.ch/2011/09/optimizer_secure_view_merging-and-VPD/
I changed the name of T to T12 and TESTUSER table specified for the schema names. I then created the function S of this page as follows:CREATE OR REPLACE FUNCTION s (schema IN VARCHAR2, tab IN VARCHAR2) RETURN VARCHAR2 AS BEGIN RETURN 'ID < 10'; END; /
I then added a couple of lines in the T12 test table:
INSERT INTO T12 VALUES (1,1,NULL); INSERT INTO T12 VALUES (4,1,NULL); INSERT INTO T12 VALUES (10,1,NULL); INSERT INTO T12 VALUES (12,1,NULL); COMMIT;
With an active 10053 trace, I executed the following SQL statement:
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The SQL_ID (in my case, found in the 10053 trace file) was 6hqw5p9d8g8wf, so I checked V$ VPD_POLICY to this SQL_ID:
SELECT * FROM V$VPD_POLICY WHERE SQL_ID='6hqw5p9d8g8wf'; ADDRESS PARADDR SQL_HASH SQL_ID CHILD_NUMBER OBJECT_OWNER OBJECT_NAME POLICY_GROUP POLICY POLICY_FUNCTION_OWNER PREDICATE ---------------- ---------------- ---------- ------------- ------------ ------------ ------------------------------ ------------------------------ ---------------------- ------------------------------ ------------------------------------------------------------------------------------ 000007FFB7701608 000007FFB7743350 1518838670 6hqw5p9d8g8wf 0 TESTUSER T12 SYS_DEFAULT T_SEC TESTUSER ID < 10
As noted above, the VPD test function named S added the predicate "ID".< 10"="" to="" the="" sql="">
There are not many clues in the 10053 trace file in my test VPD generated additional predicates. Trace the following was found shortly after the beginning of the file (this is the SQL statement initially presented):
----- Current SQL Statement for this session (sql_id=6hqw5p9d8g8wf) ----- SELECT id, pad FROM t12 WHERE spy(id, pad) = 1
I searched then down in the trace for final after changes query file (to be noted that this sentence could be slightly different in different versions of database Oracle). That's what I found:
Final query after transformations: ******* UNPARSED QUERY IS ******* SELECT "T12"."ID" "ID","T12"."PAD" "PAD" FROM "TESTUSER"."T12" "T12" WHERE "TESTUSER"."SPY"("T12"."ID","T12"."PAD")=1 AND "T12"."ID"<10 kkoqbc: optimizing query block SEL$F5BB74E1 (#0)
Note that the final query after transformation shows how the final version of the query that has been rewritten by the query optimizer before the SQL statement has been executed and this version of the query includes AND "T12". "" IDENTITY CARD ".<10. if="" i="" was="" attempting="" to="" determine="" how="" that="">10.><10 predicate="" was="" added="" to="" the="" sql="" statement,="" i="" would="" start="" at="" the="" "current="" sql="" statement="" for"="" line="" in="" the="" trace="" file="" and="" search="" down="" the="" trace="" file="" for="">10><10* -="" in="" this="" case,="" the="" following="" is="" what="" i="" found="" as="" the="" first="" search="" result,="" very="" close="" to="" the="" "current="" sql="" statement="" for"="" line="" in="" the="" trace="">10*>
************************** Predicate Move-Around (PM) ************************** PM: PM bypassed: Outer query contains no views. PM: PM bypassed: Outer query contains no views. query block SEL$F5BB74E1 (#0) unchanged FPD: Considering simple filter push in query block SEL$F5BB74E1 (#0) "TESTUSER"."SPY"("T12"."ID","T12"."PAD")=1 AND "T12"."ID"<10 try to generate transitive predicate from check constraints for query block SEL$F5BB74E1 (#0) finally: "TESTUSER"."SPY"("T12"."ID","T12"."PAD")=1 AND "T12"."ID"<10
As can be seen from the above (because the predicate again appeared before and after the line containing the word "Finally: '), the AND"T12 ". "" IDENTITY CARD ".<10 predicate="" was="" already="" added="" to="" the="" original="" sql="" statement="" by="" the="" time="" the="" predicate="" move-around="" section="" of="" the="" trace="" file="" was="" written,="" and="" that="" is="" the="" first="" mention="" of="">10><10 in="" the="" trace="" file.="" in="" your="" case,="" you="" would="" search="" the="" 10053="" trace="" file="">10>
"SEAL_FLAG" IS NULL
If V$ VPD_POLICY revealed that there are virtual private database (VPD) generated predicates applied to the SQL statement, take a look at the following article in the Oracle documentation library:
http://docs.Oracle.com/CD/B28359_01/network.111/B28531/VPD.htmThis article lists the different points of view, who can be interviewed to learn more about the VPD rules which are in force in the schema. For example, with my SPV test:
SELECT * FROM ALL_POLICIES; OBJECT_OWNER OBJECT_NAME POLICY_GROUP POLICY_NAME PF_OWNER PACKAGE FUNCTION SEL INS UPD DEL IDX CHK ENA STA POLICY_TYPE LON ------------------------------ ------------------------------ ----------------------------- ------------------------------ ------------------------------ ----------------------------- ------------------------------ --- --- --- --- --- --- --- --- ------------------------ --- TESTUSER T12 SYS_DEFAULT T_SEC TESTUSER S YES YES YES YES NO NO YES NO DYNAMIC NO
He knows performance issues related to the use of VPD, some of which are Oracle Database version-dependent, and some have been fixed in recent versions. Take a look at the following articles if you have access to My Oracle Support:
MetaLink (MOS) Doc ID 728292.1 ' known performance problems when you use transparent encryption data and indexes on the encrypted columns.
MetaLink (MOS) Doc ID 967042.1 "How to investigate Query Performance regressions Caused by VPD (FGAC) predicates?"You might find working through the second of the above that the problem is caused by a bug in database Oracle.
On a side note. Execution plans you have published include the 0 value in the column starts many of the operations in the execution plan. 0 indicates that the operation never actually executed. A 0 is included in the column starts on the line that includes the FULL ACCESS of TABLE of PEOPLE_TRANSACTIONS at least to the OPC. Value 123, a full table of PEOPLE_TRANSACTIONS table scan PROPERTY_CONTAINER_ID was not actually performed.
Charles Hooper
http://hoopercharles.WordPress.com/
IT Manager/Oracle DBA
K & M-making Machine, Inc. -
Stop the weekly reports for some users
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