Error Could Not Position Within A Table
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Java.sql.sqlexception Could Not Position Within A Table Informix
hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Exception: java.sql.SQLException: Could not position within a table (informix.tblName) up vote 1 down vote favorite Query: my_table is a view not a table static final String query= "SELECT "+MailboxId+", " + Action+", " + ActionType+", " + MsgType+", " + Priority+", " + MsgID+", " + MsgCountsSequenceNumber+", " + MsgCounts+", " + TimeOfEvent+" " + "FROM my_table " + "ORDER BY TimeOfEvent;"; public ResultSet executeQuery(Statement st, String query) throws SQLException { boolean isDeadlock= false; ResultSet rs = null; int retries= deadlockRetries; do { try { rs = st.execute(query); //here it produces exception } catch (SQLException e) { if (e.getErrorCode() == SQLERR_DEADLOCK) { diag_log(LOG, "Deadlock exception generated during execute query=", sqlQuery, ". Retries=", Integer.toString(retries)); isDeadlock= true; synchronized(_lock) { deadlockCount++; } } else { diag_log(LOG, "SQL Exception: ", Integer.toString(e.getErrorCode()), " query=", sqlQuery, " exception= ", e.getMessage() != null ? e.getMessage() : "unavailable"); // this log gets printed throw e; } } } while (isDeadlock && retries-- > 0); return rs; } Logs: Failed to read database Mydyndb with query SELECT MailboxId, Action, ActionType, MsgType, Priority, MsgID, MsgCountsSequenceNumber, MsgCounts, TimeOfEvent FROM my_table ORDER BY TimeOfEvent;. TECHNICAL
a record Technote (troubleshooting) Problem(Abstract) Locked record errors -244 and -107 or -245 and -144 when updating a record Symptom -244 Could not do a physical-order read to fetch next row. -107 ISAM error: record is locked. -245 Could not position within a file via an index. -144 ISAM error: key value locked. Cause Row, page, or table is locked. Diagnosing the problem onstat -k will show you the locks The owner column of onstat -k has the same value as the onstat -u column http://stackoverflow.com/questions/31958581/exception-java-sql-sqlexception-could-not-position-within-a-table-informix-tb address. The onstat -u output should help you identify the owner of the locks in onstat -k. The owner's username will be listed in the user column of onstat -u The onstat - u output also has a sessid column. You can use the sessid value to find out more about the session that holds the lock. Run onstat -g ses
Portuguese Este artigo está escrito em Inglês e Português English version: This post's title is an allusion to "It's the economy, stupid" phrase that become popular in one of the USA presidential http://informix-technology.blogspot.com/2012/11/its-errors-stupid.html campaigns. It seems appropriate for today, and for the short problem description I'm going to describe. Today, while working on a customer site, I was confronted with the following scenario:A developer complained that two programs working https://groups.google.com/d/topic/comp.databases.informix/O6ADGlEdITw against a non-logged database (yes, some customers still use them...) raised errors (-243/111) while DELETEing an overlapped result set. The customer DBAs replied the same as I probably would: "That can happen even on a could not non-logged database. Please use some sort of "SET LOCK MODE TO WAIT...' "But the program was already using it... So... why does it happen?! Well... we all know that there are some differences between logged and non-logged databases, but a complete list is hard to find. One is that we cannot change the isolation level in a non-logged database. It raises an error stating that the only mode allowed is could not position DIRTY READ. But it does accept the SET LOCK MODE WAIT statement, so we would expect it to enforce it... In short, what was I missing, apart from a possible, but improbable bug? The answer is, I'm missing a careful analysis of the error codes! And I should be ashamed, because I have recommended many times that people MUST always look carefully into the errors, before trying to create explanations for problems that they haven't qualified. Precisely what I was doing... So let's see some facts: The instruction causing he error was something like:DELETE FROM some_table WHERE indexed_field = VALUEAnd the query plan used the index on the column Error -243 reads:-243 Could not position within a table table-name.The database server cannot set the file position to a particular rowwithin the file that represents a table. Check the accompanying ISAMerror code for more information. A hardware error might have occurred,or the table or index might have been corrupted (truncated). Unless theISAM error code or an operating-system message points to another cause, run the oncheck utility (secheck with IBM Informix SE or tbcheck with IBM Informix OnLine) to check and repair table and index. Error -111 reads:-111 ISAM error: no record found.The ISAM processor cannot locate the requested record. For C-ISAM
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