Tom Kyte

Hi, we are working on a PeopleSoft Migration and Database too. We're migrating Oracle 11.2.0.3 to 12.2.0.1, so we have an issiue with a PeopleSoft Query. The query on actual database enviroment(11.2.0.3), have a excecution plan with minimal cost ...

Hi, LiveSQL link: https://livesql.oracle.com/apex/livesql/s/hjml6z0yg45qznob5sebg53vk I have the big table with an index on ID: <code> create table tst1 as select level id, mod(level, 10) code from dual connect by level < 1000000; create...

We are planning to convert all NVarchar fields to Varchar2 fields as we're going to change our character set and since Oracle recommends AL32UTF8 character set encoding. My question is it 100% sure that all characters from Nvarchar (UTF8) can be conv...

Hi Tom, I am very new to performance tuning. there's something that I am unclear about sql plan management. which one is faster - 1. setting OPTIMIZER_CAPTURE_SQL_PLAN_BASELINE to TRUE at session level (inside function body) and OPTIMIZE...

Hi, I am having an Oracle 11g database in an AIX linux server. I am planning to move this to a different server with same OS. I will be using same version of Oracle database in target DB as well. I have multiple schema in source database and in t...

Hello, Ask TOM Team. I want to know if there's a straightforward (not using triggers or things like that lol) way to log DML, DDL and DCL user activity on specific objects (12c). I do not know if <b>Database Vault</b> can help me with that. Any Do...

Hi, We have 2 databases DB A and DB B. we have created db link between 2 dbs as a2b; in DB A, we have below table_A and data, <code>create table table_a (emp_id number, emp_name varchar2(30)) / insert into table_a values (1,'Test1') / ...

Hi, I have a database in Oracle 12.2.0 There I have deployed a PL/SQL logic which is called from an update trigger. From this logic, following code segment is called to get the format call stack. <code>FUNCTION Format_Stack___ ...

I have a table TAX_INFO where the primary key TAX_INFO_ID is generated using a sequence SEQ_TAX_INFO_ID. Below is the sequence definition. It is defined as ORDERED at the moment <code>CREATE SEQUENCE SEQ_TAX_INFO_ID MINVALUE 1 MAXVALUE 999999999...

Hello, I have a set of MV that are dependant each other and from master tables. All are elligible to be fast-refreshed but for a reason I don't know, in some tables after a delete or update the fast refresh is longer than the complete one. So ...

can you create pragma autonomous in exception handling

Hello, i'd like a suggestion about the use case below We have a database with 2 schemas, for the schemas 1 and 2 every objects are full granted <code>grant all on "object_name" to public</code> Each users have default role <code>"Resourc...

Hi, Had problems with SQLLive, (500 response), therefore the examples are her. I have a strange behaviour with execute immediate, where it behaves differently from within a PL/SQL procedure than it does when running it standalone. Here is th...

Hello, Guys. A new db (12c) will have lots of tables with sequence used as PK. What is the difference between named sequence and system auto-generated in Oracle 12c? What would be the best approach?

Hi Tom What is row chaining/migration ? what are the consequences of Row Chaining/Migration ? How I can find whether it is there in my database or not ? and if it is there what is the solution to get rid from it? Thanks in advance Howie

hello, I've web app which is using procedures and functions inside packages most of the time, in some cases procedures and functions execution taking long time to return data (as SYS_REFCURSOR). the problem is that when other users execute other p...

Why the following table is not being Exported from Oracle-12c to Oracle-10g Table : <code>create table stock(ModID varchar(20) primary key, Name varchar(30), Type varchar(15) ,mQty number, cmpID number, price number, Warranty number);</code> ...

Hi Tom, ? have a case that i need to count specific days between two dates. For example i have a table that contains contract startdate, enddate and specific date like 15. 15 means every 15th day of months. i need to count specific dates. for exa...

If my question is too simple or meaningless, you can ignore it. Why does my user_dump_dest parameter get a different path than the actual path? I run this example: <code>EODA@muphy>select c.value || '/' || d.instance_name || '_ora_' || a.spi...

Hi Team , as per the requirement from application team , we need to copy table stats from one table to other table . Both source and destination table are partition tables . here we tested out in local system below steps : 1. created dum...