java.sql.sqlexception:ora-01000: Maximum number of open cursors exceeded

The cause of this problem is that in a session, the number of statement or PreparedStatement that are not closed exceeds the maximum number of open cursors that are defined.

Use this command line to query the maximum number of open cursors for a single session of a database definition.

Show Parameter Open_cursors

View the maximum number of open cursors in the system and the maximum number of open expressions allowed

SELECT MAX(A.value) asHighest_open_cur, P.value asMax_open_cur fromV$sesstat A, v$statname B, V$parameter pWHEREa.statistic#=b.statistic# andB.name= 'opened cursors current'    andP.name= 'open_cursors' GROUP  byP.value;

To view the SID of the number of open cursors in the system

 select   A.value, S.username, S.sid, s.serial#  from   V$sesstat A, V$statnam E B, v$session s  where  a.statistic# = b.statistic#  and  s.sid =   A.sid  and  b.name =   " opened cursors current   '  

To find SQL that is not closed PreparedStatement by Sid

SELECT Oc.sid,       oc.hash_value,       oc.sql_text,       COUNT(*) how_many    From GROUPby  sid,          Hash_value,          ORDER by  4DESC;

Workaround:

Remember to close each time you createpreparedstatement ().

PreparedStatement PS =NULL; ResultSet RS=NULL; Try{PS= Tsn.createpreparedstatement (SQL, 1); RS=Ps.executequery (); } Catch(Exception e) {Throwoaexception.wrapperexception (e); } finally {            Try {                if(rs! =NULL) {rs.close (); }                if(PS! =NULL) {ps.close (); }            } Catch(SQLException ex) {ThrowOaexception.wrapperexception (ex); }        }            

Reference Links:

ORA-01000: Analysis and resolution of the maximum number of open cursors exceeded

On the depth discrimination of finally statement block in Java

java.sql.sqlexception:ora-01000: Maximum number of open cursors exceeded