OK then, you were already told that what you're doing isn't the best idea. However, you might have your reasons, asked a question and here's one option. See if it helps. In my database, Scott's sample schema is used as a playground and I frequently create/drop tables there. I'll keep EMP and DEPT, while other tables can be dropped (I don't need them anyway). tab_to_drop contains list of those tables (that's your "50 tables"). SQL> create table tab_to_drop as 2 select table_name 3 from user_tab_columns 4 where table_name not in ('EMP', 'DEPT'); Table created. PL/SQL block that loops through that table and tries to drop each of those tables. Sometimes it succeeds, sometimes not - usually when there's a foreign key constraint involved. True - you can make the script way smarter and drop constraints first and tables next, or re-run this code. SQL> set serveroutput on SQL> begin 2 for cur_r in (select tname from tab_to_drop) loop 3 begin 4 execute immediate 'drop table ' || cur_r.tname; 5 dbms_output.put_line(cur_r.tname ||' dropped'); 6 exception 7 when others then 8 dbms_output.put_line(cur_r.tname ||' not dropped because of ' || sqlerrm); 9 end; 10 end loop; 11 end; 12 / ANAGRAFICA dropped COURSE dropped ORDERS dropped OWNER not dropped because of ORA-02449: unique/primary keys in table referenced by foreign keys PIECE_OF_ART dropped XYZ dropped PL/SQL procedure successfully completed. SQL>

I don't know of any Oracle facility that can estimate RTO. I use the timing of drills (GB of datafile backup per min and GB of archivelog backup per min) to estimate . For RPO, it depends on your assumption what redo information is lost. Redo is like what is called Transaction Log or Write Ahead Log in other DBMS. Oracle cycles through several redo log files. When an online redo log is full, or when Oracle likes to, or when Oracle is instructed to, Oracle makes a copy of the redo log, which is called archivelog (abbreviation of archived redo log). The archivelogs are then backed up by DBA. So the data lost depends on what redo information is lost: If online redo logs + all backups are intact, then is no data lost If online redo logs are lost, but archive logs + all backups are intact, the data lost is up to the latest archive log. If online and archived redo logs are lost, but all backups are intact, the data lost is up to the latest backed up archive log. The data loss can be estimated with the following SQL for cases 2 and 3: select nvl2(name, 'N', 'Y') backed_up, max(next_time) data_lost_since from v$archived_log group by nvl2(name, 'N', 'Y');

Your guess is correct, it is the number of rowids that are returned from the index. This is the number of rows examined by the table access but not necessarily the number of rows returned by it (eg you have another filter which can only be applied after reading the rest of the row).

You seem to be assigning too much meaning to the operation ID. It is there simply to uniquely identify each operation and has nothing to do with the order of operation execution. You need to read the plan "inside out", from the most nested operation to the less nested one. With that in mind, let's see what is happening: Op. 6. IDX1_SEGMENT is scanned to retrieve ROWIDs matching the segment. Op. 5. The rows from MI_SEGMENT_CUSTOMER_RELATION are read by ROWID to filter those that match the EFFECTIVE_DATE condition and get CUSTOMER_NUM. Op. 3. Loop over the retrieved CUSTOMER_NUM values. Op. 9. In the loop IDX1_F is scanned to find entries matching CUSTOMER_NUM from Op. 5, and the corresponding ROWIDs are retrieved. Op. 8. The rows from MI_FACTCUSTOMER are read by ROWID to filter those that match the EFFECTIVE_DATE condition and get CUSTOMER_NUM. Op. 2. Loop over the CUSTOMER_NUM values from Op. 8. Op. 10. In the loop access IDX_CUSTOMER to fetch ROWIDs matching the customer number. Op. 1. Loop over ROWIDs from Op. 10. Op. 11. In the loop access MI_DIMCUSTOMER to fetch the required columns. Obviously, those loops are executed simultaneously: as soon as the new value from Op. 5 is available, the next iteration of Ops. 9 and 8 can proceed, and as soon as that is complete, the next iteration of Ops. 10 and 11 can fetch the required data. Given the small number of rows and the presence of useful indexes the choice of the nested loop join seems appropriate.

Those steps work. Instead of ALLSTATS LAST +COST +BYTES I do ALLSTATS LAST TYPICAL This gets all the columns you get from the default execution plan display but with the additional row source execution statistics. I don’t know if my way gets additional columns but it will include at least cost and bytes anyway. The warning means that that child cursor was not executed with row source statistics enabled (either via the hint you used or the statistics_level parameter, as in the notes) so you can’t see the row source statistics. If you searched for a sql_id and child number using the hint text in the sql_text then you shouldn’t be getting that message (because they have the hint). After doing a couple of experiments, the answer I have is that you are not doing complete fetches for your statement (there's over 5 million estimate rows so it's not really expected for you to fetch every result). This is sometimes fine, because when you close a cursor, you're also telling the server you are done fetching from the cursor and the row source execution statistics that it collected during execution are fine to record. When you cancel mid-execution, you haven't usually done anything server side to tell Oracle you're done. A decent solution would be to run a small statement after you cancel the execution e.g select /*+gather_plan_statistics*/* from mi_factcustomer / ^C exec null This will also tell Oracle you are done with the previous cursor.

A user-friendly type of restricted data can be created. For example:create or replace type number3 as object(value number(3)) final; / Type NUMBER3 compiled create or replace type mytype as object (short_id number3); / Type MYTYPE compiled select mytype(number3(999)).short_id.value as short_id from dual; SHORT_ID 999 select mytype(number3(9999)).short_id.value as short_id from dual; ORA-01438: value larger than specified precision allowed for this columnAs defined at the level of the scheme, it will work everywhere:declare short_id number3 := number3(999); begin dbms_output.put_line(short_id.value); end; / 999

If the job is to cut off a piece from the last comma, it's not mandatory. For example:substr(s, 1, instr(s, ',', -1) - 1)

From https://ru.stackoverflow.com/questions/579731/parent-key-not-found-oracle#comment769419_579731 :ID is placed in the table by BI as a sequential trigger, and therefore, when a new value is inserted into the table, ID will have a maximum.There's some misconception, MAX(id) return the actual maximum value, but not the one expected.Let's try a simple example:create table t1 (id number primary key); set autoprint on var newid number begin insert into t1 values (1); select max (id) into :newid from t1; end; / There's no doubt. newid=1but result:NEWID 2 The reasonson was simple, in another session, met the same block with id=2 and recorded a change.That's right. id after delivery:var newid number begin insert into t1 values (1) returning id into :newid; end; / NEWID 1

One way to realize: create or replace type num_list_type as table of number; / create type item_row as object (id number, item varchar2(32)); / create type items_type as table of item_row; / -- тестовая таблица create table items as select level as id, 'item no ' || level as item from dual connect by level<=7; / create or replace function getbyList(num_list num_list_type) return items_type pipelined is begin for one in ( select item_row(id, item) item from items where id in (select * from table(num_list)) ) loop pipe row(one.item); end loop; return; end getByList; / select t.* from table(getbyList(num_list_type(1,5))) t union all select count(1), ' total items' from items ; Conclusion: ID ITEM ---------- -------------------------------- 1 item no 1 5 item no 5 7 total items

Function cast keyword multiset converts the relay data set into the SQL collection. Main purpose, manipulation of data in tables with columns declared as collections.The other application is the mapping of a classical diagram with a reference data model with objective-realing through objective submissions.Prepare data:create or replace type myItemType as object (id number, name varchar(32)); / create type myItemArrayType as table of myItemType; / create table myItems (items myItemArrayType) nested table items store as items_table; / Collection box with one element:insert into myItems values (myItemArrayType (myItemType (0, 'item 0'))); 1 row inserted. Box of collection from objective presentation of relay tables. For dual There is one or several tables:insert into myItems select cast (multiset ( select level, 'item ' || level from dual connect by level <= 5 ) as myItemArrayType) from dual; 1 row inserted. The request will be made. item 0 First line, collection item 1 - item 5 of the second:select items.*, dbms_rowid.rowid_row_number (t.rowid) rnum from myItems t cross join table (items) items; ID NAME RNUM 0 item 0 0 1 item 1 1 2 item 2 1 3 item 3 1 4 item 4 1 5 item 5 1

The cursor indicates SQL as an expression, not a table. If more accurately, the courseor is a logical index to the contextual memory area of UGA (user global areaa user session that provides information on the implementation of a specific SQL expression. Disclosure information is contained in dynamic virtual tables or so-called V $viewswhich are dynamically updated on the basis of information from OBD memory structures, transactionally independent and do not fall under the OBD data category.Open cadets with SQL expressions that they say can be seen: select saddr, sid, user_name, sql_id, sql_text, cursor_type from v$open_cursor where user_name<>upper('sys'); If the session includes the display of cadets (session_cached_cursors>0), You can see closed cadets in the neck:select oc.user_name, oc.sid, sql.sql_text from v$open_cursor oc join v$sql sql on (oc.sql_id=sql.sql_id and oc.sid=oc.sid) where user_name <> upper('sys'); Often, only statisticians are interested in how many public cadets in each session are:select a.value "cursors open", s.username, s.sid, s.serial# from v$sesstat a, v$statname b, v$session s where a.statistic# = b.statistic# and s.sid=a.sid and b.name = 'opened cursors current' order by 1 desc;

Collects are transmitted as a parameter and return as a result of the function, just as all other types of data. Default like a constant reference. Details can be read https://docs.oracle.com/en/database/oracle/oracle-database/19/lnpls/plsql-subprograms.html#GUID-C0397690-70F4-480D-ADC9-02D277DAA1BB ♪What kind of collection will help. https://ru.stackoverflow.com/q/525988/217579 ♪The simplest and most commonly used type is the table of lines drawn from the apparent courseor. Reproduced example:declare cursor data is select rownum id, trim (column_value) name from xmlTable ('"aaa", "bbb", "ccc"'); type dataRows is table of data%rowtype; function func1 return dataRows is res dataRows; begin open data; fetch data bulk collect into res; close data; return res; end; function func2 (r dataRows) return number is begin for i in 1..r.count loop dbms_output.put_line ('func2: '||r(i).id||'/'||r(i).name); end loop; return r.count; end; begin dbms_output.put_line ('processed '||func2 (func1 ())||' rows'); end; / He'll find out:func2: 1/aaaafunc2: 2/bbbfunc2: 3/cccprocessed 3 rows

It's very difficult to answer the wrong request, but I'll try.If I understand you correctly, the second request is not implemented in principle until you get ClobVal, but it breaks the request with the young. According to the rules, each column at the youth shall have the same type of data as it is in all subsequent requests. If the first column in NUMBER &apos; s first request, it should be NUMBER in all subsequent requests.Therefore, in order to solve your problem, the appropriate XMLRES column should be converted from the first request to CLOB. Use that to-CLOB.

create or replace package myvars is value number; end myvars; / myvars.value record and read in the triggers. We can add the steers and heteros. Ahtung! The latter condition will be maintained and may be no longer valid.

select substr(DOC_FNAME,-instr(reverse(DOC_FNAME),'.')) from table Look at the reverse function, she's turning the row backwards to get the position of the last point, because there may be a few in the modern name of the point files. The function of substr can be cut off from the end of the line, which uses a negative position.Option 2, using regular expressions (for Oracle 10g+):select regexp_substr(DOC_FNAME,'\.[^.]*$') from table

What's the right thing to write the procedure that's in place, you'll have to read it. https://docs.oracle.com/database/121/LNPLS/create_function.htm#LNPLS01370 ♪Where to write it, SQL Developer or pergament, it doesn't matter.create table tutor as select 1 as id, 'FI bla bla' as title from dual; create or replace procedure show(prefix varchar2) as begin for myrow in (select * from tutor where title like prefix || '%') loop dbms_output.put_line('row=' || myrow.id || ',' || myrow.title); end loop; end show; / exec show('FI'); row=1,FI bla bla

Use the INTO proposal:SELECT PERSON_EMAIL INTO email FROM ( SELECT PERSON_EMAIL FROM PERSONS WHERE rownum BETWEEN 1 AND ID ORDER BY rownum DESC ) WHERE rownum=1 P.S. You're trying to get some last tape. But Oracle, like other DSBs, does not guarantee the selection of records without specifying the exact order of sorting. I mean, "the last" can theoretically be any record.

To get token from xml in variable buffer variables token Use the following request: select extractValue(xmltype(buffer),'//token') into token from DUAL;

Oracle. executublespecified in external jobDirectly, i.e. without a shell and an empty environment. From https://ru.stackoverflow.com/questions/558541/%d0%9d%d0%b5-%d0%b7%d0%b0%d0%bf%d1%83%d1%81%d0%ba%d0%b0%d0%b5%d1%82%d1%81%d1%8f-sqlplus-%d1%87%d0%b5%d1%80%d0%b5%d0%b7-external-jobs-linux-oracle11-2-0-4/562665#comment724350_558541 : Replaced sqlplus on the scruple softball, which sets variables and starts a real sqlplus. I don't want to leave such a crutch, I want a beautiful solution.That's the right thing to do.Or it is possible to create a universal task of launching a squeak login reading, and then to launch the desired programme (or even built-in, function, etc.): begin dbms_scheduler.create_job ( job_name => '"SH1"."shell_exec"', job_type => 'EXECUTABLE', job_action => '/bin/bash', number_of_arguments => 2, start_date => to_date('2099','yyyy'), repeat_interval => NULL, end_date => NULL, enabled => false, auto_drop => false, comments => 'execute some command in bash'); dbms_scheduler.set_job_argument_value( job_name =&gt; '"SH1"."shell_exec"', argument_position =&gt; 1, argument_value =&gt; '-lc'); dbms_scheduler.set_job_argument_value( job_name =&gt; '"SH1"."shell_exec"', argument_position =&gt; 2, argument_value =&gt; 'env &gt; ~/env.out; echo "env ok" &gt;/dev/stderr; exit 0'); dbms_scheduler.enable('"SH1"."shell_exec"'); end; / exec sys.dbms_scheduler.run_job('"SH1"."shell_exec"'); B ~/env.out Removal of the full user environment, not interactive logic.Another example of launching and looking at the venting of errors: begin dbms_scheduler.set_job_argument_value( job_name => '"SH1"."shell_exec"', argument_position => 2, argument_value => 'echo "try some command here" >/dev/stderr ; exit 0'); dbms_scheduler.run_job('"SH1"."shell_exec"'); end; / select additional_info from dba_scheduler_job_run_details where job_name = 'shell_exec'; ADDITIONAL_INFO STANDARD_ERROR="env ok" STANDARD_ERROR="try some command here" Chapter https://docs.oracle.com/cd/B28359_01/server.111/b28310/schedover004.htm#BGBDCCCE other things describe how to identify the user and group with which the task will be launched.

A local variable can be created as a copy of the table in memory, a reference to it in the functions, and at the end, the inclusion of all the variable records in the table. There you go.<<mainfun>> declare type tab1row is record (id number, memo varchar2 (16)); type tab1arr is table of tab1row; tab1 tab1arr := tab1arr (); procedure subfun1 (tab1 in out nocopy tab1arr) is begin tab1.extend; tab1(tab1.count) := tab1row (1, 'by subfun1'); end; procedure subfun2 (tab1 in out nocopy tab1arr) is begin tab1.extend; tab1(tab1.count) := tab1row (2, 'by subfun2'); end; begin tab1 := tab1arr (); subfun1 (tab1); subfun2 (tab1); forall ix in 1..tab1.count insert into tab1 values (tab1(ix).id, tab1(ix).memo); end; / Result:select * from tab1; ID MEMO 1 by subfun1 2 by subfun2