Section 5.1.7, “Server Command Options” Section 5.1.10, “Server Status Variables” Section 5.1.8, “Server System Variables” Section 17.3.1, “Setting Up Replication to Use Encrypted Connections” Section 20.5.3, “Using Encrypted Connections with X Plugin” 

## tmp_table_size 

Section 8.12.3.1, “How MySQL Uses Memory” Section 8.4.4, “Internal Temporary Table Use in MySQL” Section 13.6.6.5, “Restrictions on Server-Side Cursors” Section 5.1.8, “Server System Variables” 

## tmpdir 

Section 17.4.1.2, “Backing Up Raw Data from a Replica” Section B.3.2.11, “Can’t create/write to file” Section 7.2, “Database Backup Methods” Section 15.14, “InnoDB Startup Options and System Variables” Section 8.4.4, “Internal Temporary Table Use in MySQL” Section 2.9.7, “MySQL Source-Configuration Options” Section 15.12.5, “Online DDL Failure Conditions” Section 15.12.3, “Online DDL Space Requirements” Section 8.2.1.16, “ORDER BY Optimization” Section 17.1.6.3, “Replica Server Options and Variables” Section 5.1.8, “Server System Variables” 

## transaction 

Section 2.11.4, “Changes in MySQL 8.0” 

## transaction_alloc_block_size 

Section 5.1.8, “Server System Variables” 

## transaction_allow_batching 

NDB Cluster System Variables 

## transaction_isolation 

Section 5.1.7, “Server Command Options” Section 5.1.8, “Server System Variables” Section 5.1.18, “Server Tracking of Client Session State Changes” Section 13.3.7, “SET TRANSACTION Statement” 

## transaction_prealloc_size 

Section 5.1.8, “Server System Variables” 

## transaction_read_only 

Section 8.2.3, “Optimizing INFORMATION_SCHEMA Queries” Section 5.1.7, “Server Command Options” Section 5.1.8, “Server System Variables” Section 5.1.18, “Server Tracking of Client Session State Changes” Section 13.3.7, “SET TRANSACTION Statement” 

## transaction_write_set_extraction 

Section 17.1.6.4, “Binary Logging Options and Variables” 

