Return type for a PL?SQL function

Hi,
I am trying to register a PL/SQL function with discoverer which returns more than one numerical values. What return type should i use for this function....cant see an array or something like it from the Diccover end, when I try to register it.
Please help.
-S

S.
If you create a function, then you can pass in parameters but only return one value for the function.
That return datatype cannot be an array, but just one value (ie: varchar, number, etc.).
Russ

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Hi,
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first of all, I'm using JDeveloper 10.1.3, I use JSF, ADF Faces, ADF Model, ADF Business Components.
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I just got back into town and saw all the heartfelt response. Thanks.
I have no idea why I reposted this. It's not my norm and in no way was I trying to scrape out an answer. But I did it and I take the hit for it. I really apologize for that.
The error was basic, but it's where I'm freaking AT. Basic. Go back to your initial steps into your FIRST programming language and review all the clumsy errors you made. I'm sure I'm going to make a few more thousand before I'm through.
Java's error messages and syntax may seem very familiar to you but it's brand new to me. Many of the error messages and syntax aren't always clear, at least initially.
From the ignorant knob butthole
Edited by: Zarnon on Mar 13, 2008 7:13 AM
Edited by: Zarnon on Mar 13, 2008 7:21 AM
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I am facing a similar situation, where I have defined an overloaded function in one package (2 variants) which both return a type BOOLAN value.
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FUNCTION "TD_INSERT" (a TDINIT_TYPE, stops TDDETAIL_TABLE )
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td_no Number;
td_id Number;
stop TDDETAILFULL_TYPE;
length number;
BEGIN
insert into TD_INIT values( ----passing all the values here --------- );
select max(tdno) into td_no from TD_INIT ;
length := stops.count;
for i in 1.. length loop
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Hi people.
I have some problems trying to use a function in pl/sql with a CLOB parameter to a java source function.
Here is the problem: I have to read a TXT file and return a CLOB with the data of the file. The reading is done with a java source function.
The problem is how to read the file without messing the content and return it to the pl/sql function?
Another problem: If I pass a CLOB as a parameter to a pl/sql function and have to write the content to a file, how to do it without screwing the EOL chars and so?
My code is:
/******** PLSQL FUNCTIONS ********/
function fn_gravaconteudoarquivo( pv_caminho in varchar2
, pv_nomearquivo in varchar2
, pc_conteudo in clob ) return varchar2 as language java
name 'Importacao.gravaConteudoArquivo(java.lang.String, java.lang.String, oracle.sql.CLOB) return varchar2';
function fn_lerconteudoarquivoclob( pv_caminho in varchar2
, pv_nomearquivo in varchar2 ) return clob as language java
name 'Importacao.lerArquivoClob(java.lang.String, java.lang.String) return clob';
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public static String gravaConteudoArquivo(String caminho, String nomeArquivo, CLOB conteudo) {
File file = new File(caminho, nomeArquivo);
PrintWriter pwFile;
String mensagem = "";
StringBuffer sb = new StringBuffer();
try {
pwFile = new PrintWriter(new BufferedWriter(new FileWriter(file,true)));
for (int i=0;i<=(conteudo.length()/32000);i++) {
sb.append(conteudo.getSubString(conteudo.getLength()+1,32000));
pwFile.println(sb.substring(0));
pwFile.close();
} catch (Exception ex) {
mensagem = "Erro: "+ex;
return mensagem;
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File file = new File(caminho, nomeArquivo);
Connection conn;
CLOB clob = null;
String lineSep = System.getProperty("line.separator");
StringBuffer sb = new StringBuffer();
try {
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clob = CLOB.createTemporary(conn, true, CLOB.DURATION_SESSION);
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sb.append(lineSep);
clob.open(CLOB.MODE_READWRITE);
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No one? I really need this....

SQL, PL/SQL functions, and ORA-04091 table is mutating

Dears,
Recently a question came up in an Oracle French forum about an insert/select that is throwing ORA-04091: table xxxx is mutating, trigger/function may not see it error in 11g while the same insert/select was working very well in 10g. The original poster gave a scenario that is easily reproducible. I am wondering what database release is correct the one throwing the error(11g) or the other one accepting the insert/select(10g)?
*10g*
mhouri.world > select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE     10.2.0.4.0     Production
TNS for Solaris: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
mhouri.world > create table t_read_consistency (id number, vc varchar2(15), primary key (id));
Table created.
mhouri.world > insert into
2        t_read_consistency
3      select
4        rownum id,
5        rpad('a',15,'a')
6      from
7        dual
8      connect by
9        level<=1000;
1000 rows created.
mhouri.world > commit;
Commit complete.
mhouri.world > create or replace function f_read_consistency return varchar2
2       as
3        lv_vc t_read_consistency.vc%type;
4       begin
5         select trc.vc
6         into lv_vc
7          from t_read_consistency trc
8         where trc.id = 70 ;
9        return lv_vc;
10     end f_read_consistency;
11    /
Function created.
mhouri.world >insert into
2        t_read_consistency (id, vc)
3      select
4         1001
5        ,f_read_consistency
6      from dual;
      ,f_read_consistency
ERROR at line 5:
ORA-04091: table MHOURI.T_READ_CONSISTENCY is mutating, trigger/function may not see it
ORA-06512: at "MHOURI.F_READ_CONSISTENCY", line 5
_11g_
mohamed@mhouri> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE     11.2.0.1.0     Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
mohamed@mhouri> create table t_read_consistency (id number, vc varchar2(15), primary key (id));
Table created.
mohamed@mhouri> insert into
2    t_read_consistency
3 select
4    rownum id,
5    rpad('a',15,'a')
6 from
7    dual
8 connect by
9    level<=1000;
1000 rows created.
mohamed@mhouri> create or replace function f_read_consistency return varchar2
2   as
3    lv_vc t_read_consistency.vc%type;
4   begin
5     select trc.vc
6     into lv_vc
7      from t_read_consistency trc
8     where trc.id = 70 ;
9    return lv_vc;
10 end f_read_consistency;
11 /
Function created.
mohamed@mhouri> insert into
2    t_read_consistency (id, vc)
3 select
4     1001
5    ,f_read_consistency
6 from dual;
,f_read_consistency
ERROR at line 5:
ORA-04091: table MOHAMED.T_READ_CONSISTENCY is mutating, trigger/function may
not see it
ORA-06512: at "MOHAMED.F_READ_CONSISTENCY", line 5 So far so good. Same behaviour for both releases. But let's bring a small change to the PL/SQL function to be as close as the example given in the French Forum
_10g where the select/insert was working without error_:
mhouri.world > select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE     10.2.0.4.0     Production
TNS for Solaris: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production
mhouri.world > create type t_read_cs as object (id number,vc varchar2(15));
2 /
Type created.
mhouri.world > create type t_read_cs_tab as table of t_read_cs;
2 /
Type created.
mhouri.world > create or replace function f_read_consistency_tab
2 return t_read_cs_tab
3    as
4      lc_t_read_cs_tab t_read_cs_tab := t_read_cs_tab();
5      j binary_integer := 0;
6    begin
7        for x in (select
8                      id,
9                      vc
10                   from t_read_consistency trs
11                  where trs.id <= 10
12       ) loop
13
14          j := j +1;
15          lc_t_read_cs_tab.extend;
16          lc_t_read_cs_tab(j) := t_read_cs(x.id, x.vc);
17     end loop;
18     RETURN lc_t_read_cs_tab;
19   end f_read_consistency_tab;
20 /
Function created.
mhouri.world > select count(1) from t_read_consistency;
COUNT(1)
      1000
mhouri.world > select count(1)
2 from (select * from table(f_read_consistency_tab));
COUNT(1)
        10
mhouri.world > insert into t_read_consistency
2         (id,vc)
3      select id,vc
4   from table(f_read_consistency_tab)
5 ;
10 rows created.
mhouri.world > select count(1) from t_read_consistency;
COUNT(1)
      1010
_11g where the same insert/select is throwing an error:_
mohamed@mhouri> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
mohamed@mhouri> create type t_read_cs as object (id number,vc varchar2(15));
2 /
Type created.
mohamed@mhouri> create type t_read_cs_tab as table of t_read_cs;
2 /
Type created.
mohamed@mhouri> create or replace function f_read_consistency_tab
2      return t_read_cs_tab
3        as
4          lc_t_read_cs_tab t_read_cs_tab := t_read_cs_tab();
5          j binary_integer := 0;
6        begin
7            for x in (select
8                          id,
9                          vc
10                      from t_read_consistency trs
11                     where trs.id <= 10
12          ) loop
13
14            j := j +1;
15             lc_t_read_cs_tab.extend;
16             lc_t_read_cs_tab(j) := t_read_cs(x.id, x.vc);
17        end loop;
18        RETURN lc_t_read_cs_tab;
19      end f_read_consistency_tab;
20    /
Function created.
mohamed@mhouri> select count(1) from t_read_consistency;
COUNT(1)
      1000
mohamed@mhouri> select count(1) from (select * from table(f_read_consistency_tab));
COUNT(1)
        10
mohamed@mhouri> insert into t_read_consistency
2            (id,vc)
3          select id,vc
4      from table(f_read_consistency_tab)
5     ;
    from table(f_read_consistency_tab)
ERROR at line 4:
ORA-04091: table MOHAMED.T_READ_CONSISTENCY is mutating, trigger/function may
not see it
ORA-06512: at "MOHAMED.F_READ_CONSISTENCY_TAB", line 7 In addition, one of the posters spotted out very judiciously that if we slightly change the definition of the table t_read_consistency in 11g, strangely the insert/select will work correctly in this data base as shown below:
ohamed@mhouri> drop table tr_read_consistency;
Table dropped.
mohamed@mhouri> create table tr_read_consistency
2      as select rownum rn,
3                trs.*
4      from
5         t_read_consistency trs;
Table created.
mohamed@mhouri> insert into tr_read_consistency
2                 (rn, id,vc)
3              select rownum, id,vc
4           from table(f_read_consistency_tab);
10 rows created.So is this a regression? or a corrected bug during upgrade?
Thanks in advance
Mohamed Houri

I just followed the doc links provided by Tubby, which have 100% Correct answer. See below :
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL> show user;
USER is "SCOTT"
SQL> create type t_read_cs as object (id number,vc varchar2(15));
2 /
Type created.
SQL> create type t_read_cs_tab as table of t_read_cs;
2 /
Type created.
SQL> create table t_read_consistency (id number, vc varchar2(15), primary key (id));
Table created.
SQL> create or replace function f_read_consistency_tab
2 return t_read_cs_tab
3 as
4 lc_t_read_cs_tab t_read_cs_tab := t_read_cs_tab();
5 j binary_integer := 0;
6 begin
7 for x in (select
8 id,
9 vc
10 from t_read_consistency trs
11 where trs.id <= 10
12 ) loop
13 j := j +1;
14 lc_t_read_cs_tab.extend;
15 lc_t_read_cs_tab(j) := t_read_cs(x.id, x.vc);
16 end loop;
17 RETURN lc_t_read_cs_tab;
18 end f_read_consistency_tab;
19 /
Function created.
SQL> insert into
2 t_read_consistency
3 select
4 rownum id,
5 rpad('a',15,'a')
6 from
7 dual
8 connect by
9 level<=1000;
1000 rows created.
SQL> select count(1) from t_read_consistency;
COUNT(1)
      1000
SQL> select count(1) from (select * from table(f_read_consistency_tab));
COUNT(1)
        10
SQL> insert into t_read_consistency
2 (id,vc)
3 select id,vc
4 from table(f_read_consistency_tab);
from table(f_read_consistency_tab)
ERROR at line 4:
ORA-04091: table SCOTT.T_READ_CONSISTENCY is mutating, trigger/function may not see it
ORA-06512: at "SCOTT.F_READ_CONSISTENCY_TAB", line 7
SQL> ed
Wrote file afiedt.buf
1 create or replace function f_read_consistency_tab
2 return t_read_cs_tab
3 as
4 lc_t_read_cs_tab t_read_cs_tab := t_read_cs_tab();
5 j binary_integer := 0;
6 PRAGMA AUTONOMOUS_TRANSACTION; <--- This works as documented in 11.2.0.1
7 begin
8 for x in (select
9 id,
10 vc
11 from t_read_consistency trs
12 where trs.id <= 10
13 ) loop
14 j := j +1;
15 lc_t_read_cs_tab.extend;
16 lc_t_read_cs_tab(j) := t_read_cs(x.id, x.vc);
17 end loop;
18 RETURN lc_t_read_cs_tab;
19* end f_read_consistency_tab;
SQL> /
Function created.
SQL> insert into t_read_consistency
2 (id,vc)
3 select id,vc
4 from table(f_read_consistency_tab);
insert into t_read_consistency
ERROR at line 1:
ORA-00001: unique constraint (SCOTT.SYS_C0011307) violated
SQL> drop table t_read_consistency purge;
Table dropped.
SQL> create table t_read_consistency (id number, vc varchar2(15));
Table created.
SQL> insert into
2 t_read_consistency
3 select
4 rownum id,
5 rpad('a',15,'a')
6 from
7 dual
8 connect by
9 level<=1000;
1000 rows created.
SQL> commit;
Commit complete.
SQL> insert into t_read_consistency
2 (id,vc)
3 select id,vc
4 from table(f_read_consistency_tab);
10 rows created.
SQL> commit;
Commit complete.
SQL>So, you have to add only PRAGMA AUTONOMOUS_TRANSACTION; before begin in your function code to avoid ORA-04091 in 11.2.0.1
But, All thanks to Tubby who pointed us to the correct documentation link.
Regards
Girish Sharma

Return type for a PL?SQL function

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