Berkeley DB: DBENV->set_tx_max
Description: Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++

# DBENV->set_tx_max |

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    #include <db.h>

    int
    DBENV->set_tx_max(DB_ENV *dbenv, u_int32_t tx_max);

# Description

Set the maximum number of simultaneous transactions that are supported by the environment. This bounds the size of backing files. When there are more than the specified number of concurrent transactions, calls to txn_begin will fail (until some active transactions complete). If no value is specified, a default value of 20 is used.

The DBENV->set_tx_max interface may only be used to configure Berkeley DB before the DBENV->open interface is called.

The DBENV->set_tx_max function returns a non-zero error value on failure and 0 on success.

# Errors

EINVAL
  An invalid flag value or parameter was specified.

  Called after DBENV->open was called.

# See Also

DBENV->set_tx_max, DBENV->set_tx_recover, txn_abort, txn_begin, txn_checkpoint, txn_commit, txn_id, txn_prepare and txn_stat.`

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